[Amps] Amps Digest, Vol 134, Issue 23

Gary Smith wa6fgi at yahoo.com
Thu Feb 13 17:55:06 EST 2014 

Who will give it a try on April one?

Gary...wa6fgi


On 2/13/2014 2:01 PM, amps-request at contesting.com wrote:
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> Today's Topics:
>
>     1. Umac 606 (Colin Lamb)
>     2. Re: Umac 606 (donroden at hiwaay.net)
>     3. Re: Umac 606 (Barrie - Yellowstone Photo)
>     4. Re: Umac 606 (Bill Turner)
>     5. Re: Solid state relays..again (Brian Carling)
>     6. Re: Solid state relays..again (TexasRF at aol.com)
>     7. Re: Solid state relays..again (Jeff Blaine)
>     8. Re: Umac 606 (Alek Petkovic)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 13 Feb 2014 09:10:12 -0800 (GMT-08:00)
> From: Colin Lamb <k7fm at teleport.com>
> To: amps at contesting.com
> Subject: [Amps] Umac 606
> Message-ID:
> 	<3880453.1392311413670.JavaMail.root at wamui-junio.atl.sa.earthlink.net>
> Content-Type: text/plain; charset=UTF-8
>
> Has anyone made an amplifier using the Umac 606?
>
> Looks like an interesting and practical tube.  Data at:
>
> http://www.tubecollectors.org/archives/606.pdf
>
> 73,  Colin  K7FM
>
>
> ------------------------------
>
> Message: 2
> Date: Thu, 13 Feb 2014 11:17:47 -0600
> From: donroden at hiwaay.net
> To: amps at contesting.com
> Subject: Re: [Amps] Umac 606
> Message-ID: <20140213111747.12803fljeppxsxmj at webmail.hiwaay.net>
> Content-Type: text/plain; charset=ISO-8859-1; DelSp="Yes";
> 	format="flowed"
>
> Quoting Colin Lamb <k7fm at teleport.com>:
>
>> Has anyone made an amplifier using the Umac 606?
>>
> That grid will leak all over your ham shack floor.
>
> Don W4DNR
>
>
> ------------------------------
>
> Message: 3
> Date: Thu, 13 Feb 2014 12:23:54 -0500 (EST)
> From: Barrie - Yellowstone Photo <barrie at yellowstonephoto.com>
> To: Colin Lamb <k7fm at teleport.com>, amps at contesting.com
> Subject: Re: [Amps] Umac 606
> Message-ID:
> 	<1075478624.383486.1392312234961.open-xchange at email.1and1.com>
> Content-Type: text/plain; charset=UTF-8
>
> I'm using the Russian version, the "Don't Svetit Lana 69".
>
> Barrie W7ALW
>
>
>> On February 13, 2014 at 12:10 PM Colin Lamb <k7fm at teleport.com> wrote:
>>
>>
>> Has anyone made an amplifier using the Umac 606?
>>
>> Looks like an interesting and practical tube. Data at:
>>
>> http://www.tubecollectors.org/archives/606.pdf
>>
>> 73, Colin K7FM
>> _______________________________________________
>> Amps mailing list
>> Amps at contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
> ------------------------------
>
> Message: 4
> Date: Thu, 13 Feb 2014 09:27:47 -0800
> From: Bill Turner <dezrat1242 at wildblue.net>
> To: amps at contesting.com
> Subject: Re: [Amps] Umac 606
> Message-ID: <52FD0093.6060007 at wildblue.net>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> ORIGINAL MESSAGE:          (may be snipped)
>
> On 2/13/2014 9:10 AM, Colin Lamb wrote:
>> Has anyone made an amplifier using the Umac 606?
>>
>> Looks like an interesting and practical tube.  Data at:
>>
>> http://www.tubecollectors.org/archives/606.pdf
>>
>> 73,  Colin  K7FM
> REPLY:
>
> Yes, actually that was my first amplifier before I knew better. I used
> the later version, known as the 666 for obvious reasons.
>
> Unfortunately it absorbed RF instead of generating it, but I am still
> using it as a dummy load today. Because of the absorption issue, it
> requires heating instead of cooling, and the grid, instead of leaking,
> actually sucks.
>
> Ah, the good 'ol days, especially April 1st.
>
> 73, Bill W6WRT
>
>
>
> ------------------------------
>
> Message: 5
> Date: Thu, 13 Feb 2014 10:16:48 -0500
> From: Brian Carling <bcarling at cfl.rr.com>
> To: Jim W7RY <w7ry at centurytel.net>
> Cc: "amps at contesting.com" <amps at contesting.com>
> Subject: Re: [Amps] Solid state relays..again
> Message-ID: <0EA738E1-F0BE-4FE2-83E3-C57C62499D80 at cfl.rr.com>
> Content-Type: text/plain; charset=us-ascii
>
> The little black varistor thingies work quite nicely for eliminating that "THUMMMPP!" in small to medium-size equipment.
>
> I don't really know what they are but somebody gave me a whole bunch of them a while back. I have two or three different sizes.
>
> Best regards - Bry Carling
>
>
>
>> On Feb 13, 2014, at 10:08 AM, Jim W7RY <w7ry at centurytel.net> wrote:
>>
>> That's why I put step start in my large Astron power supplies. No more thump. No more blown up power switches.
>>
>> 73
>> Jim W7RY
>>
>>> On 2/13/2014 4:01 AM, Ken Durand wrote:
>>> " And this, my dear friends, is why equipment with steel boxes and big
>>> transformers inside can make that "WHummpppp" at the moment it's switched
>>> on.
>>>
>>> Of course, in equipment controlled by a simple mechanical power switch, it's
>>> impossible to decide when exactly in the cycle the switch will close. It's
>>> this a lottery how close we will get to the peak voltage point, or the zero
>>> crossing. That's why sometimes the "WHummpppp" is strong, sometimes weaker,
>>> and sometimes even non-existent."
>>>
>>> Thanks for that bit of wisdom Manfred. I never could figure out why
>>> sometimes I get the "WHummpppp" and other times the sound would be quite
>>> different or non-existent like you described.
>>>
>>> Ken
>>> N4zed
>>>
>>> -----Original Message-----
>>> From: Amps [mailto:amps-bounces at contesting.com] On Behalf Of Manfred
>>> Mornhinweg
>>> Sent: Wednesday, February 12, 2014 12:56 PM
>>> To: amps at contesting.com
>>> Subject: Re: [Amps] Solid state relays..again
>>>
>>> Hello,
>>>
>>>> Once in a while that thing turns on with a WHummpppp and a low
>>>> frequency ringing that just trails off.
>>> Let's see if I can explain this in a way everyone can understand.
>
> ------------------------------
>
> Message: 6
> Date: Thu, 13 Feb 2014 13:22:37 -0500 (EST)
> From: TexasRF at aol.com
> To: bcarling at cfl.rr.com, w7ry at centurytel.net
> Cc: amps at contesting.com
> Subject: Re: [Amps] Solid state relays..again
> Message-ID: <8f4b.6d151b83.402e676d at aol.com>
> Content-Type: text/plain; charset="US-ASCII"
>
> Surge limiter. usually installed in one leg of the AC line  connection.
> When cold, have high resistance. When hot, low resistance. So,  they run warm
> to hot when in use. You would not want them to be located in a  stream of
> cooling air as that could spoil the low R characteristic.
>   
> Very interesting and useful device. I use them to limit turn on filament
> current in large transmitting tubes.
>   
> Available through Mouser and other distributors.
>   
> 73,
> Gerald K5GW
>   
>   
>   
> In a message dated 2/13/2014 10:15:13 A.M. Pacific Standard Time,
> bcarling at cfl.rr.com writes:
>
> The  little black varistor thingies work quite nicely for eliminating that
> "THUMMMPP!" in small to medium-size equipment.
>
> I don't really know what  they are but somebody gave me a whole bunch of
> them a while back. I have two  or three different sizes.
>
> Best regards - Bry  Carling
>
>
>
>> On Feb 13, 2014, at 10:08 AM, Jim W7RY  <w7ry at centurytel.net> wrote:
>>
>> That's why I put step  start in my large Astron power supplies. No more
> thump. No more blown up power  switches.
>> 73
>> Jim W7RY
>>
>>> On  2/13/2014 4:01 AM, Ken Durand wrote:
>>> " And this, my dear friends,  is why equipment with steel boxes and big
>>> transformers inside can  make that "WHummpppp" at the moment it's
> switched
>>> on.
>>>   
>>> Of course, in equipment controlled by a simple mechanical power  switch,
> it's
>>> impossible to decide when exactly in the cycle the  switch will close.
> It's
>>> this a lottery how close we will get to  the peak voltage point, or the
> zero
>>> crossing. That's why sometimes  the "WHummpppp" is strong, sometimes
> weaker,
>>> and sometimes even  non-existent."
>>>
>>> Thanks for that bit of wisdom Manfred.  I never could figure out why
>>> sometimes I get the "WHummpppp" and  other times the sound would be quite
>>> different or non-existent  like you described.
>>>
>>> Ken
>>> N4zed
>>>   
>>> -----Original Message-----
>>> From: Amps  [mailto:amps-bounces at contesting.com] On Behalf Of Manfred
>>>   Mornhinweg
>>> Sent: Wednesday, February 12, 2014 12:56 PM
>>>   To: amps at contesting.com
>>> Subject: Re: [Amps] Solid state  relays..again
>>>
>>> Hello,
>>>
>>>>   Once in a while that thing turns on with a WHummpppp and a low
>>>>   frequency ringing that just trails off.
>>> Let's see if I can explain  this in a way everyone can  understand.
> _______________________________________________
> Amps mailing  list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
>
>
> ------------------------------
>
> Message: 7
> Date: Thu, 13 Feb 2014 14:14:13 -0600
> From: "Jeff Blaine" <keepwalking188 at yahoo.com>
> To: <TexasRF at aol.com>,	<bcarling at cfl.rr.com>,	<w7ry at centurytel.net>
> Cc: amps at contesting.com
> Subject: Re: [Amps] Solid state relays..again
> Message-ID: <6E727EB555BE4111A627009724E4B8B9 at w520>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> 	reply-type=original
>
> As an alternative to a resistor based SSR, what about something like the
> Cyrdom SST240 soft-start module?
>
> This gadget sits next to the SSR and ramps up the duty cycle of the SSR over
> a 3-second period.  There is (was) another variant that had a variable ramp
> up time.  Crydom has replaced these with more complicated modules but the
> old ones are still around.
>
> http://www.crydom.com/en/products/catalog/AdvancedWebPage.aspx?CategoryText1=Obsolete%20Products&CategoryText2=SST%20Series%20Soft-start%20modules&SBCatPage=
>
> 73/jeff/ac0c
> www.ac0c.com
> alpha-charlie-zero-charlie
>
> -----Original Message-----
> From: TexasRF at aol.com
> Sent: Thursday, February 13, 2014 12:22 PM
> To: bcarling at cfl.rr.com ; w7ry at centurytel.net
> Cc: amps at contesting.com
> Subject: Re: [Amps] Solid state relays..again
>
> Surge limiter. usually installed in one leg of the AC line  connection.
> When cold, have high resistance. When hot, low resistance. So,  they run
> warm
> to hot when in use. You would not want them to be located in a  stream of
> cooling air as that could spoil the low R characteristic.
>
> Very interesting and useful device. I use them to limit turn on filament
> current in large transmitting tubes.
>
> Available through Mouser and other distributors.
>
> 73,
> Gerald K5GW
>
>
>
> In a message dated 2/13/2014 10:15:13 A.M. Pacific Standard Time,
> bcarling at cfl.rr.com writes:
>
> The  little black varistor thingies work quite nicely for eliminating that
> "THUMMMPP!" in small to medium-size equipment.
>
> I don't really know what  they are but somebody gave me a whole bunch of
> them a while back. I have two  or three different sizes.
>
> Best regards - Bry  Carling
>
>
>
>> On Feb 13, 2014, at 10:08 AM, Jim W7RY  <w7ry at centurytel.net> wrote:
>>
>> That's why I put step  start in my large Astron power supplies. No more
> thump. No more blown up power  switches.
>> 73
>> Jim W7RY
>>
>>> On  2/13/2014 4:01 AM, Ken Durand wrote:
>>> " And this, my dear friends,  is why equipment with steel boxes and big
>>> transformers inside can  make that "WHummpppp" at the moment it's
> switched
>>> on.
>>>
>>> Of course, in equipment controlled by a simple mechanical power  switch,
> it's
>>> impossible to decide when exactly in the cycle the  switch will close.
> It's
>>> this a lottery how close we will get to  the peak voltage point, or the
> zero
>>> crossing. That's why sometimes  the "WHummpppp" is strong, sometimes
> weaker,
>>> and sometimes even  non-existent."
>>>
>>> Thanks for that bit of wisdom Manfred.  I never could figure out why
>>> sometimes I get the "WHummpppp" and  other times the sound would be quite
>>> different or non-existent  like you described.
>>>
>>> Ken
>>> N4zed
>>>
>>> -----Original Message-----
>>> From: Amps  [mailto:amps-bounces at contesting.com] On Behalf Of Manfred
>>>   Mornhinweg
>>> Sent: Wednesday, February 12, 2014 12:56 PM
>>>   To: amps at contesting.com
>>> Subject: Re: [Amps] Solid state  relays..again
>>>
>>> Hello,
>>>
>>>>   Once in a while that thing turns on with a WHummpppp and a low
>>>>   frequency ringing that just trails off.
>>> Let's see if I can explain  this in a way everyone can  understand.
> _______________________________________________
> Amps mailing  list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
>
>
> ------------------------------
>
> Message: 8
> Date: Fri, 14 Feb 2014 06:01:16 +0800
> From: Alek Petkovic <vk6apk at bigpond.com>
> To: donroden at hiwaay.net
> Cc: amps at contesting.com
> Subject: Re: [Amps] Umac 606
> Message-ID: <52FD40AC.8040500 at bigpond.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> I run zero bias with my 606 amp.
> I mix the leak with Coke Zero and some ice.
> Volatility is reduced. Cooling is taken care of and my glass is
> continually full.
>
> Alek. VK6APK
>
> On 14/02/2014 1:17 AM, donroden at hiwaay.net wrote:
>> Quoting Colin Lamb <k7fm at teleport.com>:
>>
>>> Has anyone made an amplifier using the Umac 606?
>>>
>> That grid will leak all over your ham shack floor.
>>
>> Don W4DNR
>> _______________________________________________
>> Amps mailing list
>> Amps at contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
>>

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