Topband: Topband Strange Propagation

Carl Braun Carl.Braun at lairdtech.com
Sun Jan 17 15:10:29 EST 2016


Don't the new auto tune amps have the ability to retune with a single dit?

My old Henry takes a lot more than a dit when retuning from 80 to 160. Hi

Carl AG6X

Sent from my iPhone

> On Jan 17, 2016, at 4:37 AM, "Kenneth Grimm" <grimm at sbc.edu> wrote:
> 
> 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
>> _________________
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>> 
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> 
> 
> 
> -- 
> 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 González
> _________________
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