However, not doing the mod does make the stability solid as a rock (no pun intended). If the channel element has to start up when the repeater is keyed, it has to stabilize. You may never notice the difference except on a monitor or heterodyne with another repeater, but it is there. If your spacing is tight (15 kHz or less), it could be a factor with your neighbors. I've seen many commercial units (in the commercial bands) go pretty far off frequency - albeit only a spike.
I actually modified my Scraptronics (AKA Hamtronics) to do just the opposite. The drift on UHF was so bad, I modded it to leave the exciter on and switched the TX stages a step or two 'down the road'. I could hear it at the site, but that's all. If your repeater TXs CTCSS or CDCSS, you never hear it anyway. Personally, I would never do the mod if I didn't live at the site (which, of course, I know some people do), and then, only if it was CSQ TX (which I would 'mod' to CTCSS first!). Joe M. Laryn Lohman wrote: > > Mike, good idea. Its definitely annoying to have the oscillator > running all the time while working up at the site. Its one of those > things that was near the bottom of the priority list to take care of > sometime, but that trick should be easy and quick to do... Thanks > > Laryn K8TVZ > > --- In [email protected], Mike Morris WA6ILQ > <[EMAIL PROTECTED]> wrote: > > If this is a repeater (where there is no antenna relay) there is > > a simple way to fix this... unground the F1 TX channel element > > pin and connect it to the antenna relay control lead. This way > > when the TX is keyed the channel element is turned on. > > > > Mike WA6ILQ > > > > Yahoo! Groups Links > > To visit your group on the web, go to: > http://groups.yahoo.com/group/Repeater-Builder/ > > To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to: > http://docs.yahoo.com/info/terms/ Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
