Topband: Topband Digest, Vol 157, Issue 38 Neutralizing your 833As

[Dave Olean]

Hi Mike
    You need a signal generator and a crystal detector to sniff in that amp. 
Feed a low level signal in with the filaments on but HV off and see how much 
RF leaks thru to the output connector, then mess around with neutralization 
schemes until the RF drops way down. I do that all the time and it works 
great. I have neutralized a six meter KW with a 4CX1000A, a bunch of 4CX 
250B amps and driver amps, etc. It never failed. Shoot for 10 dB or more 
attenuation than the tube can produce and it should work FB.  The nice part 
is no high voltage to worry about. You can get the neutralizing wire or the 
cap set for a perfect null at your frequency pretty fast. I used to use a 
signal generator wiyth an HP 415E VSWR indicator. Put 1000 Hz audio 
modulation on the signal generator and you can read attenuation right off 
the meter on the 415.. Slick!  Now I have two port a vector network 
analyzer, so the HP 415 sits on the shelf, but either method is quick.

Dave K1WHS




----- Original Message ----- 
From: <topband-request at contesting.com>
To: <topband at contesting.com>
Sent: Sunday, January 17, 2016 4:25 PM
Subject: Topband Digest, Vol 157, Issue 38


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> When replying, please edit your Subject line so it is more specific
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> Today's Topics:
>
>   1. Re: Palmyra cursed paradise (K5P) (Mike Waters)
>   2. 2016 Visalia Top Band Dinner (wb6rse1 at mac.com)
>   3. Re: 160m monoband amp (was strange propagation) (Mike Waters)
>   4. Re: Palmyra cursed paradise (K5P) (Carl Braun)
>   5. Re: 160m monoband amp (was strange propagation)
>      (Louis Parascondola)
>   6. Robot contester (Louis Parascondola)
>   7. Re: Robot contester (Louis Parascondola)
>   8. Re: Amateur stations (Cecil Acuff)
>   9. Re: Topband Strange Propagation (Richard (Rick) Karlquist)
>  10. Re: Any way to check isolation transformer for FCP
>      (Guy Olinger K2AV)
>  11. Commscope SFX-500 - need SFX-ANF connectors - OT (Gary Smith)
>  12. Re: Topband Strange Propagation (Louis Parascondola)
>  13. Re: K5P in Zone 14 (Jan Erik Holm)
>  14. Re: K5P in Zone 14 (Jim Brown)
>  15. Re: Topband Strange Propagation (Kenneth Grimm)
>  16. K5P good job ! (Mike Smith VE9AA)
>  17. Re: K5P good job ! (Tim Shoppa)
>  18. Re: Any way to check isolation transformer for FCP
>      (Andrejs Pankins)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 16 Jan 2016 17:54:20 -0600
> From: Mike Waters <mikewate at gmail.com>
> To: Art Snapper <art at nk8x.net>
> Cc: 160 <topband at contesting.com>
> Subject: Re: Topband: Palmyra cursed paradise (K5P)
> Message-ID:
> <CA+FxYXjGSU92mQDF49StmNjiWPNb60Hue9O4ncDC9rhNo1z-TA at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> Hi Art,
>
> Whether or not elevated radials would help K5P, what you stated is NOT 
> pure
> speculation! :-)
> Generally speaking, it is well-established that we can use far fewer
> elevated radials under a vertical than ground mounted radials, for the 
> same
> efficiency.
>
> 73, Mike
> www.w0btu.com
>
> On Sat, Jan 16, 2016 at 5:22 PM, Art Snapper <art at nk8x.net> wrote:
>
>> I wonder how good the ground conductivity is on an atoll? Perhaps
>> elevating the radials would help.
>>
>> My $0.02 of pure speculation.
>>
>
>
> ------------------------------
>
> Message: 2
> Date: Sat, 16 Jan 2016 15:56:13 -0800
> From: wb6rse1 at mac.com
> To: Top Band List List <topband at contesting.com>
> Subject: Topband: 2016 Visalia Top Band Dinner
> Message-ID: <21BE1629-3A70-4989-B6F5-BCAEF92EAD40 at mac.com>
> Content-Type: text/plain; charset=windows-1252
>
> Announcing the 2016 Top Band Dinner at the Visalia IDXC April 15, 2016.
> Craig Thompson, K9CT, will present: ?Top Band from Palmyra, K5P.?
> There will be a self-serve buffet dinner and door prizes.
> Complete details and registration information can be found at 
> http://topbanddinner.jimdo.com
>
> 73! - Steve WB6RSE
>
>
>
> ------------------------------
>
> Message: 3
> Date: Sat, 16 Jan 2016 18:40:12 -0600
> From: Mike Waters <mikewate at gmail.com>
> To: Louis Parascondola <gudguyham at aol.com>
> Cc: topband <topband at contesting.com>
> Subject: Re: Topband: 160m monoband amp (was strange propagation)
> Message-ID:
> <CA+FxYXgdUtePown0SsyhemZBj+6y5X4cHGxqcYXCOOmUKAdt6g at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> Hi Lou,
>
> Of all the sources of unique help and info about 160 meters, IMO this
> reflector is the best one.
> I suppose you've found the searchable archives, which I've found 
> invaluable
> many times:
>
> lists.contesting.com/archives//html/Topband/
>
> lists.contesting.com/archives//cgi-bin/namazu.cgi?idxname=Topband
>
> There are other sources, notably ON4UN's Low Band DXing, published by the
> ARRL. Everyone with an interest in 160m should own a copy.
>
> There are a number of other informative web sites out there, too. I have
> some of them listed and linked to from www.w0btu.com (not all on one page,
> sorry). And there's a page there about Beverage antennas there that you
> might find useful.
>
>
> Maybe you would let me pick your brain sometime about my swamped-grid
> dual-833C legal limit amp. It works fine on 160 and 80, but it needs
> neutralizing if it's going to be stable on 40 (and work at all on 20). I
> have a plan to neutralize it using a tertiary winding on the input
> transformer, but I foresee a lot of trial and error. But I don't have time
> to work on that right now.
>
> I wasn't even sure if two of those triodes in parallel would even work, so
> I didn't spend a lot of time making it look pretty.
> www.w0btu.com/833C_linear_amplifier.html
>
> Stick around, Lou. Believe it or not, this is usually a friendly forum!
>
> 73, Mike
> www.w0btu.com
>
>
> On Sat, Jan 16, 2016 at 9:31 AM, Louis Parascondola via Topband <
> topband at contesting.com> wrote:
>
>> I came to the group to try to pick up pointers on improving my 160 meter
>> experience.  In the short two weeks I have been here I have so much
>> information to digest.  Especially with receiving antennas,
>>
>
>
> ------------------------------
>
> Message: 4
> Date: Sun, 17 Jan 2016 00:42:29 +0000
> From: Carl Braun <Carl.Braun at lairdtech.com>
> To: Doug Turnbull <turnbull at net1.ie>
> Cc: "topband at contesting.com" <topband at contesting.com>
> Subject: Re: Topband: Palmyra cursed paradise (K5P)
> Message-ID: <5AB54427-474F-4F8D-A1A1-339625548D90 at lairdtech.com>
> Content-Type: text/plain; charset="us-ascii"
>
> Thanks Doug.
>
> Awesome read. Has me wondering about our guys on the island.
>
> Maybe the "darkness" of the island has something to do with the S9+ 
> signals we're seeing here in San Diego. Hi.
>
> Carl AG6X
>
> Sent from my iPhone
>
>> On Jan 16, 2016, at 1:26 PM, "Doug Turnbull" <turnbull at net1.ie> wrote:
>>
>> Dear OMs and Yls,
>>     The following link was posted me by Don EI6IL and tells a very
>> interesting story of woe and murder on Palmyra Island going back to the 
>> very
>> discovery of the atoll.    Slightly off topic but many of us have 
>> illusions
>> of working K5P so this may be of interest and also add a bit of spice. 
>> The
>> cursed paradise is a good read:
>>
>> http://mysteriousuniverse.org/2014/07/the-cursed-paradise-of-palmyra-atoll/
>>
>>
>>      Yes EU feels the W6 pain this time and the poor cousins of EI in DL
>> and I lands are even worse off than in EI for K5P.   At least the EI path 
>> is
>> over ocean and tundra rather than thousands of fellow hams.
>>
>>       Good hunting.
>>                 73 Doug EI2CN
>>
>>
>> _________________
>> Topband Reflector Archives - http://www.contesting.com/_topband
>
>
> ------------------------------
>
> Message: 5
> Date: Sat, 16 Jan 2016 19:59:31 -0500
> From: Louis Parascondola <gudguyham at aol.com>
> To: mikewate at gmail.com
> Cc: topband at contesting.com
> Subject: Re: Topband: 160m monoband amp (was strange propagation)
> Message-ID: <1524d1819db-65c6-111e1 at webprd-m66.mail.aol.com>
> Content-Type: text/plain; charset=utf-8
>
> Thanks Mike, I'm not going anywhere.  I hope that Tom reconsiders his 
> leaving.  If you look at the time and effort he spent on his website which 
> he always updates and adds to, and the efforts he puts forth on the 
> various reflectors you have to say it is nothing less than admirable.  A 
> handful of people do such things and many of them are on here also.  So I 
> agree, this is the place to be.  I've know about this reflector for years 
> but never bothered with it since my interest in 160 was nil.  Recently I 
> made a decision to give it a crack and boy do I see it is a whole lot 
> different than working even 80 meters and above. Lou W1QJ
>
>
>
> -----Original Message-----
> From: Mike Waters <mikewate at gmail.com>
> To: Louis Parascondola <gudguyham at aol.com>
> Cc: topband <topband at contesting.com>
> Sent: Sat, Jan 16, 2016 7:40 pm
> Subject: Re: Topband: 160m monoband amp (was strange propagation)
>
>
>
>
> Hi Lou,
>
>
> Of all the sources of unique help and info about 160 meters, IMO this 
> reflector is the best one.
> I suppose you've found the searchable archives, which I've found 
> invaluable many times:
>
> lists.contesting.com/archives//html/Topband/
>
> lists.contesting.com/archives//cgi-bin/namazu.cgi?idxname=Topband
>
> There are other sources, notably ON4UN's Low Band DXing, published by the 
> ARRL. Everyone with an interest in 160m should own a copy.
>
>
> There are a number of other informative web sites out there, too. I have 
> some of them listed and linked to from www.w0btu.com (not all on one page, 
> sorry). And there's a page there about Beverage antennas there that you 
> might find useful.
>
>
>
> Maybe you would let me pick your brain sometime about my swamped-grid 
> dual-833C legal limit amp. It works fine on 160 and 80, but it needs 
> neutralizing if it's going to be stable on 40 (and work at all on 20). I 
> have a plan to neutralize it using a tertiary winding on the input 
> transformer, but I foresee a lot of trial and error. But I don't have time 
> to work on that right now.
>
> I wasn't even sure if two of those triodes in parallel would even work, so 
> I didn't spend a lot of time making it look pretty.
> www.w0btu.com/833C_linear_amplifier.html
>
>
> Stick around, Lou. Believe it or not, this is usually a friendly forum!
>
>
>
> 73, Mike
>
> www.w0btu.com
>
>
>
>
>
>
>
> On Sat, Jan 16, 2016 at 9:31 AM, Louis Parascondola via Topband 
> <topband at contesting.com> wrote:
>
> I came to the group to try to pick up pointers on improving my 160 meter 
> experience.  In the short two weeks I have been here I have so much 
> information to digest.  Especially with receiving antennas,
>
>
>
>
>
>
>
>
> ------------------------------
>
> Message: 6
> Date: Sat, 16 Jan 2016 20:06:39 -0500
> From: Louis Parascondola <gudguyham at aol.com>
> To: topband at contesting.com
> Subject: Topband: Robot contester
> Message-ID: <1524d1ea36d-65c6-11200 at webprd-m66.mail.aol.com>
> Content-Type: text/plain; charset=utf-8
>
>
> Hopefully you can get this file.  Just another twist on operating.
>
>
>
>
> Listen to the attached recording, a robot, operating the contest
>
>
>
>
>
>
> ------------------------------
>
> Message: 7
> Date: Sat, 16 Jan 2016 20:09:11 -0500
> From: Louis Parascondola <gudguyham at aol.com>
> To: topband at contesting.com
> Subject: Re: Topband: Robot contester
> Message-ID: <1524d20f5b1-65c6-11210 at webprd-m66.mail.aol.com>
> Content-Type: text/plain; charset=utf-8
>
> Sorry, file stripped. Lou W1QJ
>
>
>
> -----Original Message-----
> From: Louis Parascondola via Topband <topband at contesting.com>
> To: topband <topband at contesting.com>
> Sent: Sat, Jan 16, 2016 8:06 pm
> Subject: Topband: Robot contester
>
>
> Hopefully you can get this file.  Just another twist on operating.
>
>
>
>
> Listen to the attached recording, a robot, operating the contest
>
>
>
>
> _________________
> Topband Reflector Archives - http://www.contesting.com/_topband
>
>
>
> ------------------------------
>
> Message: 8
> Date: Sat, 16 Jan 2016 19:20:44 -0600
> From: Cecil Acuff <chacuff at cableone.net>
> To: Roger D Johnson <n1rj at roadrunner.com>
> Cc: Top Band Reflector <topband at contesting.com>
> Subject: Re: Topband: Amateur stations
> Message-ID: <DCC91FD1-52E9-4F9A-9827-CF129176B5F1 at cableone.net>
> Content-Type: text/plain; charset=us-ascii
>
>
> Probably a good choice...
>
>
>
>> On Jan 16, 2016, at 12:11 PM, Roger D Johnson <n1rj at roadrunner.com> 
>> wrote:
>>
>> One final comment and then I'll be silent.
>>
>>
>>
>>
>>
>> _________________
>> Topband Reflector Archives - http://www.contesting.com/_topband
>
>
> ------------------------------
>
> Message: 9
> Date: Sat, 16 Jan 2016 19:49:07 -0800
> From: "Richard (Rick) Karlquist" <richard at karlquist.com>
> To: Gary at ka1j.com, topband at contesting.com
> Subject: Re: Topband: Topband Strange Propagation
> Message-ID: <569B0F33.1050104 at karlquist.com>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
>
>
> On 1/16/2016 12:10 AM, Gary Smith wrote:
>
>> There's an odd behavior that we've all heard & that's the "ditter",
>> the person who on the DX frequency sends the occasional dit, not a
>> string, just a dit & then some odd seconds later does it again. I
>> wonder if they do it to bust the chops of someone like me who tries
>
>> KA1J
>>
>
> Some auto tune linears are set up to change bands or sub-bands
> by sending one dit.  With peak reading meters, they will also
> display RF out and SWR from one dit.  At least this is a lot
> less QRM than tuning up the old fashioned way.  In both
> cases, the solution is to select SPLIT before transmitting
> or just tuning.
>
> Most rigs have IF gain this is optimized for phone, which
> means it is way too low for CW.  This results in an AGC
> threshold that is way above the rig's internal noise level.
>
> Short of redesigning the rig (I actually did this to an FT-757
> by adding an IF gain stage), you should use an audio attenuator
> in front of your headphones so the the rig's audio output stage
> clips before the level in 'phones gets too high.
>
> Rick N6RK
>
>
> ------------------------------
>
> Message: 10
> Date: Sat, 16 Jan 2016 23:04:09 -0500
> From: Guy Olinger K2AV <k2av.guy at gmail.com>
> To: Andrejs Pankins <yl2qn.andy at gmail.com>
> Cc: "topband at contesting.com" <topband at contesting.com>
> Subject: Re: Topband: Any way to check isolation transformer for FCP
> Message-ID:
> <CANckpc3=6QqafVzo_AypkfM15GHti+bTr3MkwHhn56y-QfNNOA at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> Hi Andy,
>
> I'll be responding to you off reflector tomorrow. 73, Guy K2AV
>
> On Saturday, January 16, 2016, Andrejs Pankins <yl2qn.andy at gmail.com> 
> wrote:
>
>> Hello,
>>
>> Need your help. For a long time can't get working FCP for my Inverted L.
>>
>> I'm looking for some way to check quality of my homemade isolation
>> transformer. I'm connect primary to 50 Ohm dummy load and secondary to
>> Antenna Analyzer. Get reading @1850 Ra=28 Ohm and Rx=34 Ohm. Rx is raised
>> with frequency. Inductance for primary and secondary is 5.7uH. 
>> Capacitance
>> between primary and secondary is 140 pF.
>>
>> These reading looks normal or somthing wrong ? I'm expected 1:1 impedance
>> transformation without additional Rx.
>>
>> Thanks a lot in advance for your help.
>>
>> Regards,
>> Andy - YL2QN
>> _________________
>> Topband Reflector Archives - http://www.contesting.com/_topband
>>
>
>
> -- 
> Sent via Gmail Mobile on my iPhone
>
>
> ------------------------------
>
> Message: 11
> Date: Sat, 16 Jan 2016 23:42:03 -0500
> From: "Gary Smith" <Gary at ka1j.com>
> To: topband at contesting.com
> Subject: Topband: Commscope SFX-500 - need SFX-ANF connectors - OT
> Message-ID: <569B1B9B.31971.3E9608 at Gary.ka1j.com>
> Content-Type: text/plain; charset=US-ASCII
>
> A friend gave me some Commscope 1/2" heliax but had no connectors to
> go with it. Its out of production hardline and Commscope can't help
> with connectors. It requires SFX-ANF for a N connector, they didn't
> make one with a PL-259. Would anyone have two or four of these
> connectors they'd like to part with?
>
> Thanks & 73,
>
> Gary
> KA1J
>
>
> ------------------------------
>
> Message: 12
> Date: Sun, 17 Jan 2016 00:31:34 -0500
> From: Louis Parascondola <gudguyham at aol.com>
> To: richard at karlquist.com, Gary at ka1j.com, topband at contesting.com
> Subject: Re: Topband: Topband Strange Propagation
> Message-ID: <1524e112c87-65c6-115c5 at webprd-m66.mail.aol.com>
> Content-Type: text/plain; charset=utf-8
>
> I have experienced this single dit when working split on a DX station.  I 
> wondered if it was some kind of malicious interference of some sort but 
> other than what Gary suggested I don't see how it is terribly annoying to 
> the point that one would be making any statement by doing it.
>
>
> W1QJ
>
>
>
> -----Original Message-----
> From: Richard (Rick) Karlquist <richard at karlquist.com>
> To: Gary <Gary at ka1j.com>; topband <topband at contesting.com>
> Sent: Sat, Jan 16, 2016 11:07 pm
> Subject: Re: Topband: Topband Strange Propagation
>
>
>
> On 1/16/2016 12:10 AM, Gary Smith wrote:
>
>> There's an odd behavior that we've all heard & that's the "ditter",
>> the person who on the DX frequency sends the occasional dit, not a
>> string, just a dit & then some odd seconds later does it again. I
>> wonder if they do it to bust the chops of someone like me who tries
>
>> KA1J
>>
>
> Some auto tune linears are set up to change bands or sub-bands
> by sending one dit.  With peak reading meters, they will also
> display RF out and SWR from one dit.  At least this is a lot
> less QRM than tuning up the old fashioned way.  In both
> cases, the solution is to select SPLIT before transmitting
> or just tuning.
>
> Most rigs have IF gain this is optimized for phone, which
> means it is way too low for CW.  This results in an AGC
> threshold that is way above the rig's internal noise level.
>
> Short of redesigning the rig (I actually did this to an FT-757
> by adding an IF gain stage), you should use an audio attenuator
> in front of your headphones so the the rig's audio output stage
> clips before the level in 'phones gets too high.
>
> Rick N6RK
> _________________
> Topband Reflector Archives - http://www.contesting.com/_topband
>
>
>
> ------------------------------
>
> Message: 13
> Date: Sun, 17 Jan 2016 07:48:23 +0100
> From: Jan Erik Holm <sm2ekm at bdtv.se>
> To: topband at contesting.com
> Subject: Re: Topband: K5P in Zone 14
> Message-ID: <569B3937.7050201 at bdtv.se>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> Yesterday to my big surprise I could copy K5P on 160m for
> about 30 minutes, seemed to peak around 1445Z. They where
> as strong as 559 on the peaks with deep QSB. I never ever
> was thinking it was possible to even hear them the way
> 160m is these days.
> However they does not seem to RX very well. Me and OH6KN
> and one or two others was calling but K5P mostly was calling
> CQ.
> Big problem also was that the K5P operator never did announce
> the RX frequency, he seemed to listen both up and down.
> I am sorry but this is a very bad way of operating.
>
> 73 Jim SM2EKM
> -----------------------------------------------------------------
> On 2016-01-16 18:31, Doug Turnbull wrote:
>> Dear OMs,
>>       Please do not think I am criticizing the team.   So far at 17:27 
>> GMT on
>> Jan16 there has only been one 160M QSO with zone 14 which includes EI, G, 
>> DL
>> etc.    The propagation gods are not favouring us at all.   K5P is a hard
>> reach on most bands and once you go away from 17 through 40 meters there 
>> are
>> literally only about five QSOs total on the other bands.
>>
>>        Some are losing their reason and making poor comments which 
>> reflect
>> badly on both them and their nations.   We as a hobby need to do better 
>> in
>> recognizing the troubles of the DXpedition.
>>
>>                    73 Doug EI2CN
>
>
>
> ------------------------------
>
> Message: 14
> Date: Sat, 16 Jan 2016 22:57:19 -0800
> From: Jim Brown <jim at audiosystemsgroup.com>
> To: topband at contesting.com
> Subject: Re: Topband: K5P in Zone 14
> Message-ID: <569B3B4F.10008 at audiosystemsgroup.com>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> On Sat,1/16/2016 10:48 PM, Jan Erik Holm wrote:
>> Yesterday to my big surprise I could copy K5P on 160m for
>> about 30 minutes, seemed to peak around 1445Z. They where
>> as strong as 559 on the peaks with deep QSB. I never ever
>> was thinking it was possible to even hear them the way
>> 160m is these days.
> 1445Z is good propagation to western NA (west coast sunrise), so they
> were probably listening there. If they knew there was propagation to EU,
> they would probably have listened there instead. Let your pilot know.
>
>> Big problem also was that the K5P operator never did announce
>> the RX frequency, he seemed to listen both up and down.
>> I am sorry but this is a very bad way of operating.
>
> They are very close to JA. JA can TX 1810 to 1825. K5P TX is 1825.5.
> They listen DOWN for JA, UP for everyone else.
>
> 73, Jim K9YC
>
>
> ------------------------------
>
> Message: 15
> Date: Sun, 17 Jan 2016 07:36:22 -0500
> From: Kenneth Grimm <grimm at sbc.edu>
> To: topband <topband at contesting.com>
> Subject: Re: Topband: Topband Strange Propagation
> Message-ID:
> <CAN1acjYJWPydnGgxEuxwRe3rycpmU2dVKJs4qA9NcJ87qdJRQw at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> My take on it was that "the dit marks the spot" either for a buddy or just
> as a "public service."  While not as annoying as other forms of
> transmissions on the DX freq, it still shows bad manners...however, not as
> bad as when I forget to engage the split button.  Maybe that is why I've
> never been nominated for the A1 op award.  At least it's why I wouldn't
> nominate me.
>
> 73,
>
> Ken - K4XL
>
> On Sun, Jan 17, 2016 at 12:31 AM, Louis Parascondola via Topband <
> topband at contesting.com> wrote:
>
>> I have experienced this single dit when working split on a DX station.  I
>> wondered if it was some kind of malicious interference of some sort but
>> other than what Gary suggested I don't see how it is terribly annoying to
>> the point that one would be making any statement by doing it.
>>
>>
>> W1QJ
>>
>>
>>
>> -----Original Message-----
>> From: Richard (Rick) Karlquist <richard at karlquist.com>
>> To: Gary <Gary at ka1j.com>; topband <topband at contesting.com>
>> Sent: Sat, Jan 16, 2016 11:07 pm
>> Subject: Re: Topband: Topband Strange Propagation
>>
>>
>>
>> On 1/16/2016 12:10 AM, Gary Smith wrote:
>>
>> > There's an odd behavior that we've all heard & that's the "ditter",
>> > the person who on the DX frequency sends the occasional dit, not a
>> > string, just a dit & then some odd seconds later does it again. I
>> > wonder if they do it to bust the chops of someone like me who tries
>>
>> > KA1J
>> >
>>
>> Some auto tune linears are set up to change bands or sub-bands
>> by sending one dit.  With peak reading meters, they will also
>> display RF out and SWR from one dit.  At least this is a lot
>> less QRM than tuning up the old fashioned way.  In both
>> cases, the solution is to select SPLIT before transmitting
>> or just tuning.
>>
>> Most rigs have IF gain this is optimized for phone, which
>> means it is way too low for CW.  This results in an AGC
>> threshold that is way above the rig's internal noise level.
>>
>> Short of redesigning the rig (I actually did this to an FT-757
>> by adding an IF gain stage), you should use an audio attenuator
>> in front of your headphones so the the rig's audio output stage
>> clips before the level in 'phones gets too high.
>>
>> Rick N6RK
>> _________________
>> Topband Reflector Archives - http://www.contesting.com/_topband
>>
>> _________________
>> Topband Reflector Archives - http://www.contesting.com/_topband
>>
>
>
>
> -- 
> Ken - K4XL
> BoatAnchor Manual Archive
> BAMA - http://bama.edebris.com
>
> "Show me a politician who is poor, and I'll show you a poor
> politician." - Carlos
> Hank Gonz?lez
>
>
> ------------------------------
>
> Message: 16
> Date: Sun, 17 Jan 2016 09:55:36 -0400
> From: "Mike Smith VE9AA" <ve9aa at nbnet.nb.ca>
> To: <topband at contesting.com>
> Subject: Topband: K5P good job !
> Message-ID: <000d01d1512e$cef5dd60$6ce19820$@nbnet.nb.ca>
> Content-Type: text/plain; charset="us-ascii"
>
> Whoever the 160m op was this morning was doing a really great job, moving
> right along at aprox 32-33wpm.  (I have to wonder if it was K9CT)
>
> I managed to get in the log at 1155z (10mins before SR here), however 
> there
> were a few W1's and a VE1 that were worked 10-15mins before that.
>
>
>
> What surprised me (why, I don't know-It just does, even after many 
> decades)
> was when K5P would say AA0R? AA0R?, .WB2Z.'s, KB4Q.'s and VE7S..'s would 
> all
> come back to him.  Yes, most did stop calling, so I have to wonder...are
> these folks just plain rude or were they not hearing K5P well enough to
> discern who he was coming back to?
>
>
>
> Now, In full disclosure, I am no saint, and have been known to respond to 
> a
> DX stn if there's an unruly p/u I hear something like VE3A? VE3A? or 9AA?,
> 9AA? ,IT9A? IT9A? or VE8AU? VE8AU? or VE1AAA? VE1AAA? but all those dance
> around my call (VE9AA). If there's any change "away" from my call, I stop
> calling.  I also listen to my xmit QRG and if there's someone with a 
> closer
> call, I will stop calling.  Luckily, it almost always starts off with VE9?
> or 9AA? so I am good 99% of the time and rarely step on anyones toes. (and
> always feel bad if I do)
>
>
>
> If the DX said WB6Z? I certainly wouldn't call.  Full credit to the K5P op
> who tried to stick with it til he figured the original caller wasn't 
> hearing
> him or they were getting pummeled so badly from calls not even close to 
> the
> original, that he moved on.  Rate is king when time is 
> limited.(dxpeditions
> only have so many days)
>
>
>
> gah !
>
>
>
> Anyways, they were doing an incredible job despite incessant callers..some
> of whom NEVER stopped calling.  They were in here solid for a good hour at
> about 529-549 (no preamp on), inverted L @ 35' a mile of radials..and up 
> to
> 26mins past SR here before slipping into the dust.
>
>
>
> Well done Islanders ! Well done.
>
>
>
> Mike VE9AA
>
>
>
> Mike, Coreen & Corey
>
> Keswick Ridge, NB
>
>
>
>
>
> ------------------------------
>
> Message: 17
> Date: Sun, 17 Jan 2016 09:10:16 -0500
> From: Tim Shoppa <tshoppa at gmail.com>
> To: topBand List <topband at contesting.com>
> Subject: Re: Topband: K5P good job !
> Message-ID:
> <CAJ_qRvYUgoYbJS_3buZa256FbuNSXC+Uq833K8_bj2jkmdLjuQ at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> Mike, if you go to clublog.org, search K5P DXpedition log for your call,
> and mouse over the greenie, you will see the operator for your QSO (his
> call and picture). I don't think they've uploaded this morning's QSO's yet
> but they are doing uploads several times a day.
>
> W0GJ was the operator for my 160M QSO. Sharp looking guy!
>
> Tim N3QE
>
> On Sun, Jan 17, 2016 at 8:55 AM, Mike Smith VE9AA <ve9aa at nbnet.nb.ca> 
> wrote:
>
>> Whoever the 160m op was this morning was doing a really great job, moving
>> right along at aprox 32-33wpm.  (I have to wonder if it was K9CT)
>>
>> I managed to get in the log at 1155z (10mins before SR here), however 
>> there
>> were a few W1's and a VE1 that were worked 10-15mins before that.
>>
>>
>>
>> What surprised me (why, I don't know-It just does, even after many 
>> decades)
>> was when K5P would say AA0R? AA0R?, .WB2Z.'s, KB4Q.'s and VE7S..'s would
>> all
>> come back to him.  Yes, most did stop calling, so I have to wonder...are
>> these folks just plain rude or were they not hearing K5P well enough to
>> discern who he was coming back to?
>>
>>
>>
>> Now, In full disclosure, I am no saint, and have been known to respond to 
>> a
>> DX stn if there's an unruly p/u I hear something like VE3A? VE3A? or 
>> 9AA?,
>> 9AA? ,IT9A? IT9A? or VE8AU? VE8AU? or VE1AAA? VE1AAA? but all those dance
>> around my call (VE9AA). If there's any change "away" from my call, I stop
>> calling.  I also listen to my xmit QRG and if there's someone with a 
>> closer
>> call, I will stop calling.  Luckily, it almost always starts off with 
>> VE9?
>> or 9AA? so I am good 99% of the time and rarely step on anyones toes. 
>> (and
>> always feel bad if I do)
>>
>>
>>
>> If the DX said WB6Z? I certainly wouldn't call.  Full credit to the K5P 
>> op
>> who tried to stick with it til he figured the original caller wasn't
>> hearing
>> him or they were getting pummeled so badly from calls not even close to 
>> the
>> original, that he moved on.  Rate is king when time is 
>> limited.(dxpeditions
>> only have so many days)
>>
>>
>>
>> gah !
>>
>>
>>
>> Anyways, they were doing an incredible job despite incessant 
>> callers..some
>> of whom NEVER stopped calling.  They were in here solid for a good hour 
>> at
>> about 529-549 (no preamp on), inverted L @ 35' a mile of radials..and up 
>> to
>> 26mins past SR here before slipping into the dust.
>>
>>
>>
>> Well done Islanders ! Well done.
>>
>>
>>
>> Mike VE9AA
>>
>>
>>
>> Mike, Coreen & Corey
>>
>> Keswick Ridge, NB
>>
>>
>>
>> _________________
>> Topband Reflector Archives - http://www.contesting.com/_topband
>>
>
>
> ------------------------------
>
> Message: 18
> Date: Sun, 17 Jan 2016 18:24:07 +0200
> From: Andrejs Pankins <yl2qn.andy at gmail.com>
> To: William Shanney <wshanney at verizon.net>, topband at contesting.com
> Subject: Re: Topband: Any way to check isolation transformer for FCP
> Message-ID:
> <CAGSOfNAu_F5ZHn=yX7nOMR-vRYqGRuqMK2NDg146FdjeP5SefA at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> William,
>
> Thanks for idea. Are you absolutely right - 5uH is too small for 160m.
>
> Looks like I have a wrong toroid. After playing with amidon toroid
> calculator, I found that 20 turns on T300 will give around 5uH (like 
> mine),
> T300A-2 will give 45.6uH
>
> Regards,
> Andy - YL2QN
>
>
> On Sun, Jan 17, 2016 at 1:52 AM, William Shanney <wshanney at verizon.net>
> wrote:
>
>> 5.7 uH sounds too low for 160M, I?d want ten times that to keep the
>> winding impedance >>50 ohms.
>>
>> Bill, W6QR
>> > On Jan 16, 2016, at 3:44 PM, Andrejs Pankins <yl2qn.andy at gmail.com>
>> wrote:
>> >
>> > Hello,
>> >
>> > Need your help. For a long time can't get working FCP for my Inverted 
>> > L.
>> >
>> > I'm looking for some way to check quality of my homemade isolation
>> > transformer. I'm connect primary to 50 Ohm dummy load and secondary to
>> > Antenna Analyzer. Get reading @1850 Ra=28 Ohm and Rx=34 Ohm. Rx is 
>> > raised
>> > with frequency. Inductance for primary and secondary is 5.7uH.
>> Capacitance
>> > between primary and secondary is 140 pF.
>> >
>> > These reading looks normal or somthing wrong ? I'm expected 1:1 
>> > impedance
>> > transformation without additional Rx.
>> >
>> > Thanks a lot in advance for your help.
>> >
>> > Regards,
>> > Andy - YL2QN
>> > _________________
>> > Topband Reflector Archives - http://www.contesting.com/_topband
>>
>>
>
>
> ------------------------------
>
> Subject: Digest Footer
>
> _______________________________________________
> Topband mailing list
> Topband at contesting.com
> http://lists.contesting.com/mailman/listinfo/topband
>
>
> ------------------------------
>
> End of Topband Digest, Vol 157, Issue 38
> ****************************************