[TenTec] Argo V amp keying

[Bob McGraw - K4TAX]

Well even a J-38 or a bug will work.  I suppose since there is no physical 
internal mechanical key, all keyers are therefore external.  This reference 
is to the method described in the Centurion manual for radios that do not 
have QSK capability.  I didn't invent the wheel, I just greased it to make 
it turn easier.



73
Bob, K4TAX


----- Original Message ----- 
From: "Mike Bryce" <prosolar at sssnet.com>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Friday, August 09, 2013 9:26 AM
Subject: Re: [TenTec] Argo V amp keying


> bob,
>
> isn't that assuming that you're using an external keyer?
>
> I designed a small circuit board that will go inside the argo v and will 
> provide powermosfet output.
>
> the input is optical coupled to the rig.
>
> the pcb about the size of a quarter.
>
> I'll look around the shack and see if I have a few left.
>
>
>
>
> Mike, WB8VGE
> SunLight Energy Systems
> The Heathkit Shop
> http://www.theheathkitshop.com/
> J e e p
> o|||||||o
>
> A man with one clock knows what time it is. A man with two clocks is never 
> sure.
>
>
>
> On Aug 8, 2013, at 8:12 AM, Bob McGraw - K4TAX wrote:
>
>> Just remember, making changes of this magnitude might put one in the 
>> position of a "very underpaid design Engineer".  In other words, "if one 
>> THINKS they know what they are doing, best STOP and ask someone that has 
>> done it before successfully".
>>
>> I agree with Rick, adding something like this might be fatal to the 
>> radio.
>>
>> Now lets look at the issue a bit differently.  Why not use your keyer 
>> with a suitable driver to key the amp and to key the radio.  It works 
>> this way for situations where one does not have QSK keying ability when 
>> using the Centurion amp and some other radio that does not have QSK 
>> capability.  The key is connected to the amp {not the radio}  and the 
>> keying circuit in the amp then keys the radio upon key closure.  The AUX 
>> connector on the back of the ARGO V does have access to the PTT for that 
>> reason.
>>
>>
>> 73
>> Bob, K4TAX
>>
>>
>
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