Would I gain any advantage by changing out my Motorola MICOR Repeater TPN1110B supplies (the ones with the constant-voltage transformer) to the TPN1151A Switching power supply? I have a few spares of each type, but most of my MICOR Repeaters came with the 1110B supply installed.
I don't know why there were two types of supplies offered with the MICOR Repeater/Base Station radios. The switching supplies seem to be very quiet (even around an HF radio), as far as I have been able to determine. Some of the MICOR service manuals have sections for both supplies, to cover the particular unit that was supplied with the user's station. LJ -----Original Message----- >From: skipp025 <[EMAIL PROTECTED]> >Sent: Jan 14, 2007 9:09 AM >To: Repeater-Builder@yahoogroups.com >Subject: [Repeater-Builder] Re: Switching Power Supply vs. Astron Etc. > > >> If the supply you are using is fine why change? Yes, you >> would gain some amperage capacity. > >Relative example... >A room full of Motorola Repeater Stations in non constant >service costs about $30/month each to operate. Put the repeater >into lock to talk mode (IRLP or Echolink) and the energy cost >rises by almost a third (typical). > >One of the energy soaks is the well designed and constructed >transformers within the repeater power supplies. > >Replacing the hungry Motorhead Power Supplies cuts at least >1/2 off the power bill, which is much nicer when you're the one >having to pay it. > >> However, switching supplies are inherently noisy. You >> could experience problems from these noises. I realize >> we are not talking about HF. But, it is possible to wind >> up with a problem you don't have now. > >Many of the common 13.8 vdc switchers sold to the ham market >will hose up at least the 160 meter ham band no problem, which >is just above the am broadcast band I have on the shop when >XM is stale. > >> If that 50 amp supply is fine, I see no advantage in the change. >> Dave > >Cheers Dave, >skipp > >
