[Moon-Net] FT-736R how to adjust 23cm frequency?

Richard W. Solomon w1ksz at earthlink.net
Thu Nov 24 22:38:28 CET 2016

Before you start tweaking, I suggest you verify that your counter is


A simple GPSDO, with a 10 MHz output, can serve as your counter Reference 

Input. That will ensure you have accuracies that are as good as you can get.


73, Dick, W1KSZ 


From: moon-net-bounces at mailman.pe1itr.com
[mailto:moon-net-bounces at mailman.pe1itr.com] On Behalf Of Simon Lewis
Sent: Thursday, November 24, 2016 2:25 PM
To: Dirk Reyners; moon-net at mailman.pe1itr.com
Subject: Re: [Moon-Net] FT-736R how to adjust 23cm frequency?




I am pretty sure the MO on the main IF unit is the one to aim for


I had 2 x 736rs with the same issues


If I remember the MO is multiplied - so a few Hz off at 144 is much larger
at 432, is larger again at 1296 


I ended up stacking polystyrene around the master oscillator can and trying
to keep the radio as stable as possible by leaving it on or turning it on
well before operating 


I am pretty sure from memory the master osc drives all modules hence the


Kinda hope that helps!







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From: Dirk Reyners <mailto:dirk.reyners at telenet.be> 
Sent: Friday, 25 November 2016 12:55 AM
To: moon-net at mailman.pe1itr.com
Subject: [Moon-Net] FT-736R how to adjust 23cm frequency?


Hi Group,

This evening we tried to calibrate my FT736R on 23cm, the frequency is 
2,6KHz off. (if you watch the pictures we set 1296.300 and counter says 

Very annoying in E.M.E....

The 144MHz and 432MHz transmitters are +/- a few Hz bang on frequency.

I opened the optional 23cm module to find out which screw to turn but, 
nope... no result

these are photos from the module





anyone done this before?

I tried Q14, nope

TC01 caused a fast frequency drift of 300KHz downward so quickly put it back

Would be soooo nice to have my rig on frequency

Best 73! ON5GS Dirk

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