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 [email protected]:
Message: 21
Date: Thu, 12 Nov 2020 16:08:33 -0600 (CST)
From: Chris Cox<[email protected]>
To:[email protected],[email protected]
Subject: [Elecraft] K3 transverter connector question
Message-ID:<[email protected]>
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 [email protected]
--
73, Martin DM4iM
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