Can anybody offer guidance...?
I have a Yaesu FT707 which is my main shack rig. Last night the freqeuncy display started drifting +/- 3 khz from the receive freqency. The actual rx frequency does not alter as the ssb speech is still perfect through the speaker. On tx the display remains constant on the tx freq.
(I saw this once but in reverse, constant on rx, and moving on tx).
changing modes does not help, and the warmer the set gets, the more bands it affects. from cold only 10 metres, then eventually all bands when it is warm.
Using the external vfo (fv707dm) keeps the frequency display static.
Any ideas would be most appreciated.
I have the full service manual for part identification if that helps.
ian sweatman M0KCMian@sweatman.co.uk