Do you have the pushbutton in the TUNE position?? When I do (and with both fixed freq buttons OUT) the tuning on my RV75 is slower than the TR7 itself....I'd say maybe 10 degrees of knob motion for? 100 hz? change in the TR7 display
On Mon, Mar 13, 2023 at 1:23?PM Rick Boswell <frboswell@...> wrote:
I began checking out a new-to-me RV75 this AM and am seeing some issues I dont yet understand. These are:
1. While the RV75 seems to be working in a basic fashion, the frequency displayed on the TR7 varies by as much a 2 KHz over time, even with an extneded warmup and without touching the tuning knob. 2. It is nearly impossible to set the frequenciny to the desired 100 Hz increment; very small movements of the tuning knob produce a few hundred Hz change in the displayed frequency. 3. The "Fixed Frequency" feature does not display the programmed frequency. Programming is a bit convoluted but I have verified several times that the switch settings are as described in the manual.
This is a a late serial number RV75 in very nice overall condition and was serviced by Ron Baker in 2015; his invoice shows only minimal work needed. My TR7 works as expected with an RV7 in place of the RV75.
So, wondering how best to proceed. Problems may be pilot error due to lack of familiarity, but if so, not clear what the pilot is doing wrong. I have a manual? but am reluctant to dive into troubleshooting without a better understanding as to what might cause these symptoms. Any guidance appreciated.
