nc4ab wrote: > I may be able to pick up some TK-820 mobiles and wondered if anyone > had converted one to full duplex. > > The TKR-820 repeater is based on the TK-820, and it appears (on the > surface anyway) that the mobile units shouldn't be too hard to > convert to repeater service since they already have dual vco's. > > NC4AB >
I don't have a book here, but the way I remember it, the TKR was NOT just a modded TK-820. There are (and will have to be for ANY full duplex synthesised radio) two separate VCO's to generate tx and rx at the same time. The mobile, as I remember, doesn't have two fully spearate VCO's, just two adjusments for the same one. I could be wrong... In any event, it's WAAY to difficult to duplex one of those to be worth the effort. You also have a lot of wierd T/R switching that goes through the microprocessor, and it would likely mean replacing the micro with one from a TKR. I wouldn't bother with it. By the time you get done, you could have converted two or three Mitreks, and a BUNCH of Micors or MII's. Or gotten a second mobile and just wired the two together. Jim 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/
