[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!
Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for Windows
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?
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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