I have a 2-Meter Repeater that was originally an old MICOR Ma Bell VHF Mobile Telephone Transmitter - it never did have a receiver installed in it. I converted the transmitter to 2-Meters, then came up with a Spectra-Tac receiver chassis (which has a MICOR receiver, that I also converted to 2-Meters) to use as the Repeater Receiver.
This particular Spectra-Tac chassis doesn't have an internal AC supply, so I run it off of the main MICOR AC supply that powers the PA Deck, etc. - this AC supply is the one with the number something like TPN1106B, I think - not the MICOR switching supply. No problems with hum or anything else, and the receiver RF shielding is so good, that talking to it on the bench with a handheld radio (with no antenna connected to the Spectra-Tac), it's a little bit noisy! Definitely a fine Repeater receiver. Larry -----Original Message----- >From: "Kevin Berlen, K9HX" <[EMAIL PROTECTED]> >Sent: Jan 15, 2006 10:11 PM >To: Repeater-Builder@yahoogroups.com >Subject: Re: [Repeater-Builder] SpectraTac receiver on 12v > >I believe that all of the power supplies for these receivers have a 12V >input on >them. This input is intended to be supplied from a battery, and there is very >poor filtering on it. Make sure if you use this input that it is supplied >from a >well filtered supply. I once made the mistake of running one of these from the >high current output of a Mastr II station PS, and had bad hum and noise until I >figured out what was happening. 73, > >Kevin, K9HX > >At 12:21 AM 1/16/2006, you wrote: >>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 >> >> >> >> >> >> >>Yahoo! Groups Links >> >> >> >> > > > > > > > >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/