I could be mistaken, but another reason why it would be easier to just replace the caps is that I think you will then have to find and disable the emergency power alert tone if you go direct to 12v. Unless you completely remove the supply that is.....
Adam N2ACF ----- Original Message ----- From: "Bob M." <[EMAIL PROTECTED]> To: <Repeater-Builder@yahoogroups.com> Sent: Monday, January 16, 2006 07:48 Subject: Re: [inbox] [Repeater-Builder] SpectraTac receiver on 12v >I was about to say the same thing. Easier to fix it > than to bypass it. > > Unplug the power to the unit. Unplug the cables going > to the cardcage backplane so you can get the back > cover off. The back cover is held on with four screws. > There should be two screw terminals on standoffs > coming off the power supply board; these are the 12V > battery backup terminals. They're very close to the > voltage adjusting pot on the board. > > The station should work just as well on battery as on > AC. It would be better to replace the bad caps. > However, you probably won't find exact replacements > available any more, especially for a big aluminum can > capacitor. > > I have a full manual on the SpectraTAC receiver. I > could send you the schematic, board layout, and parts > list if that would help. I can either scan them and > put them up somewhere, or make copies and mail them to > you. > > Bob M. > ====== > --- Ellen Engle <[EMAIL PROTECTED]> wrote: > >> Take the back cover off of the unit and find the AC >> supply. Take a look at >> the electrolytic caps and jump them out and yuo will >> quickly find your hum >> problem. Yes the radio can be run on 12 v, but >> it'sjust as easy to do basic >> troubleshooting with a DVM and find the noise. >> >> Milt >> N3LTQ >> >> >> ----- Original Message ----- >> From: "Steven Passmore, kf6fkk" >> <[EMAIL PROTECTED]> >> To: <Repeater-Builder@yahoogroups.com> >> Sent: Monday, January 16, 2006 12:21 AM >> Subject: [inbox] [Repeater-Builder] SpectraTac >> receiver on 12v >> >> >> > Is it possible to operate SpectraTac receivers on >> 12v easily? I don't have >> a >> > manual for the unit so I'm unsure what the >> specific connections are for. >> The >> > two VHF units I have exibit a slight 60Hz hum in >> the audio. I'd like to >> try >> > running them on 12v to isolate the built in supply >> as the problem. >> > >> > Thanks >> > Steve > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com > > > > > > Yahoo! Groups Links > > > > > > > > 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/
