[Elecraft] K3 transverter connector question

[Martin]

Chris,
i'm using a 22MHz I/F for my 432MHz Transverter ( 102.5MHz *4 + 
22=432MHz.) With the signal on 432, i transmit into a 13cm transverter 
for QO-100. I didn't change anything on my K3 other than buying the 
Transverter/RX-Antenna Board. So , no, it is not required to wideband 
the K3.
OTOH, i found there is no 'general coverage' . The specifications drop 
when you move too far off and at a certain point, transmit fails. I 
suspect this also happens to the receive parameters, but you should give 
it a try. IIRC , it IS possible to tune above 30MHz, so you should try a 
I/F 28-32MHz with your 116MHz crystal and see how you get away.

If you modify your transverter anyway , You may want to try a cheap 
solution: Buy a Si5351A Clock Breakout Board or similar. It can be 
programmed to output the frequency you need and i think is even more 
stable than the original crystal which drifts a lot.
With a miniature computer like a arduino nano or attiny, you can build a 
clock source you can switch 116 / 118 Mhz . Or any other frequency.

Am 13.11.20 um 09:05 schrieb elecraft-request at mailman.qth.net:
> Message: 21
> Date: Thu, 12 Nov 2020 16:08:33 -0600 (CST)
> From: Chris Cox<chrisc at chris.org>
> To:Elecraft-K3 at groups.io,elecraft at mailman.qth.net
> Subject: [Elecraft] K3 transverter connector question
> Message-ID:<f777868f-3751-a95-bbb1-49498865540 at chris.org>
> Content-Type: text/plain; format=flowed; charset=US-ASCII
> 
> Good day.
> 
> I am considering recrystalling my 2m transverter with a 118MHz rock
> replacing the existing 116MHz crystal, thereby permitting full two metre
> band coverage with a 26-30MHz I/F.
> 
> Does the K3 need to be widebanded to enable low-level 26-28MHz RF on the
> transverter transmit port or is the low-level output available by default?
> 
> -- Chris Cox, N0UK, G4JEC chrisc at chris.org

-- 
73, Martin DM4iM