I don't have an old amp design that I have brought to live, but I did recently
drag home an 80's vintage Motorola paging transmitter with a nice two tube
(8560AS') amp to possibly convert to a six meter amp. The transmitter was
putting out 200 watts around 160 MHZ and designed for continuous duty, and I
believe it after hauling the supply out of my SUV into the garage... Argh! The
transformer alone sure makes our ham amplifier transformers look puny in
comparison.
Eric
W9WLW
Sent from my iPad
> On Dec 10, 2013, at 9:33 AM, "Bob McGraw - K4TAX" <RMcGraw@Blomand.net> wrote:
>
> When shortly after being licensed in 1959, I built an amp with four 6DQ5
> sweep tubes. These were in a parallel and push-pull configuration. I drove
> the control grids in push-pull and the plates were connected parallel. The
> screens were then modulated with audio thus I had a 600 watt balanced
> modulator. The result was 600 watts of DSB with about 20 dB of carrier
> suppression.
>
> Give me an idea and I'll try about anything...........once.
>
> 73
> Bob, K4TAX
>
>
>
>
> ----- Original Message ----- From: "Rick - DJ0IP / NJ0IP" <Rick@DJ0IP.de>
> To: "'Discussion of Ten-Tec Equipment'" <tentec@contesting.com>
> Sent: Tuesday, December 10, 2013 4:23 AM
> Subject: Re: [TenTec] 318 and qsk-5
>
>
>> My dream was to build an amp with 4x 1625's in push-pull parallel.
>> At the end of the day, I built the amp with 3x 811a instead - straight out
>> of the Handbook.
>>
>> 73
>> Rick, DJ0IP
>>
>> -----Original Message-----
>> From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Bob McGraw
>> - K4TAX
>> Sent: Tuesday, December 10, 2013 2:18 AM
>> To: Discussion of Ten-Tec Equipment
>> Subject: Re: [TenTec] 318 and qsk-5
>>
>> Nothing like class AB1 or AB2 push pull audio from a pair of 6V6GT's.
>>
>> 73
>> Bob, K4TAX
>>
>>
>>
>>
>> ----- Original Message ----- From: "denton sprague" <denton@oregontrail.net>
>> To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
>> Sent: Monday, December 09, 2013 6:18 PM
>> Subject: Re: [TenTec] 318 and qsk-5
>>
>>
>> we had a cat that loved the top of that receiver on a cold winters day..but
>> she kept getting her claws hung up on the top covers vent holes.
>> Called her our "excess filament heat absorption unit".
>> I really miss that old SX101A..the audio was georgous..but it sure did like
>> to drift.
>>
>>> On Dec 8, 2013, at 10:44 PM, Richards <jrichards@k8jhr.com> wrote:
>>>
>>> ..., they weight in at some 135 lbs. ...
>>>
>>> ...and one won't need to worry about the desk
>>>> moving around when sending aggressive CW.
>>>
>>> _______________________________________________
>>>
>>>
>>> I would hope not! :-0
>>>
>>>
>>> I hope you can afford the electric bill... that
>>> is quite some heater! ;-)
>>>
>>>
>>> --------------------- K8JHR -------------------
>>>
>>>
>>>
>>> /
>>> _______________________________________________
>>> TenTec mailing list
>>> TenTec@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/tentec
>>>
>>
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>
>
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