[Elecraft] Using tube transmitter with K3/KX3/K2 as receiver?

Charlie T, K3ICH pincon at erols.com
Fri Oct 24 09:00:58 EDT 2014


Yes.......properly adjusted phasing type SSB generators have always been 
known for their excellent audio ala HT-37,  100V and now, even though it's 
performed in software, the KX3.

Maybe that "chirp" could be a new feature for Wayne to incorporate so we can 
pretend  *  we're operating a 30's hollow state xmtr.

73, Charlie k3ICH



*  I DO hope you don't think this was serious, but you never know how some 
comments are taken......


----- Original Message ----- 
From: "Alan" <n1al at sonic.net>
To: <elecraft at mailman.qth.net>
Sent: Thursday, October 23, 2014 11:58 PM
Subject: Re: [Elecraft] Using tube transmitter with K3/KX3/K2 as receiver?


> > the TX1
>
> Ah yes, the "Scratchy Apache" was a fine radio.  I had the SB-10 SSB 
> adapter to go with it.  It worked great with a VHF transmitting converter 
> because the low-level output from the SB-10 was just about the right power 
> level to drive the converter.
>
> I used to frequently get unsolicited compliments on my audio quality.  (No 
> crystal filters in the transmit path.)
>
> Alan N1AL
>
>
>
> On 10/23/2014 05:57 PM, david Moes wrote:
>> the TX1 with High level plate modulation it will do way more on AM than 
>> the K3  I get about 110W carrier.  the TX1 didn't do SSB without 
>> additional hardware which I have but its not yet restored.   the real 
>> point is the vintage fun factor of restoring and getting on the air with 
>> 110lbs of iron.
>>
>> David Moes
>>
>>
>> VE3DVY,  VE3SD
>>
>> On 10/23/2014 20:44, Don Wilhelm wrote:
>>> Re: Heath TX1 power --
>>> The Heath TX1 used a pair of 6146 output tubes, those normally run 180 
>>> watts *input* power.
>>> Modern transceivers (K3 included) are rated fort power output.
>>> If one assumes a 67% efficiency (realistic) at 180 watts input, the 
>>> output power will be 120 watts - that is about what one can get from a 
>>> K3, although I do not recommend running the power knob to more than 100 
>>> watts to keep IMD under control.
>>>
>>> Sooo - I don't think the TX1 will "crank out a whole more power" It 
>>> seems to me to be about the same.
>>>
>>> 73,
>>> Don W3FPR
>>>
>>> On 10/23/2014 8:25 PM, david Moes wrote:
>>>> Good question and answers here   I did the same as don suggested up 
>>>> till recently.   I have  a Heathkit TX1.  I had no receiver until 
>>>> recently when I got the RX1 to go with it.   bit of a crappy reciever 
>>>> but its still a fun to do the nostalgia thing.    The TX1 will crank 
>>>> out a whole lot more power on AM and CW than the K3 and it warms the 
>>>> shack in the winter. Its not all DX and contests sometimes its fun to 
>>>> get out the old and tinker.   next up is 1930 era two tube  push pull 
>>>> UX-245 40m transmitter   now were talking chirp!.
>>>>
>>>
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>
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