Hi,i have a Icom IC-725 that works fine,,but its about 10HZ off
according to the readout
,,,anyone know the pocedure for calibration?
monte

10 Hz is well within the accuracy and stability specifications.

Stability is the key spec. How much does the radio drift in the first 1 hour of
warm up?

How do you know the 10 Hz value? How soon after power on is it measured? etc.!

wrote:

Hi,i have a Icom IC-725 that works fine,,but its about 10HZ off
according to the readout
,,,anyone know the pocedure for calibration?
monte

In article . com,
wrote:

Hi,i have a Icom IC-725 that works fine,,but its about 10HZ off
according to the readout
,,,anyone know the pocedure for calibration?

Monte-

I don't know if this will help or not. I found an article in my
archives from last June, that gave an address for the manuals for both
the 725 and the 725A.

http://www.icom.co.jp/manual/externa...ers/IC-725.pdf

http://www.icom.co.jp/manual/externa...rs/IC-725A.pdf

I have not tested the addresses to see if they work.

You will be hard pressed to beat 10 Hz, even if the rig has a TCXO. If
you have the capability of measuring it, all you need to do is find the
adjustment, let the rig warm up a couple of hours, and adjust it. Let
the adjustment stabilize a while and check again. Ceramic trimmer
capacitors seem to drift slightly immediately after adjustment.

Fred
K4DII