I would look at a newer repeater such as an R-1 by Maggiore Labs it has a very low draw. A Kenwood TKR-850 is a great repeater but it draws a lot more DC power. Both the above are great repeaters as they do NOT need a lot of TLC. They will just run and run. Good luck! 73 Russ, W3CH
----- Original Message ----- From: "John Everson" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Friday, January 07, 2005 3:35 AM Subject: [Repeater-Builder] Re: New repeater buildup > > > --- In [email protected], "hooker" <[EMAIL PROTECTED]> > wrote: > > Hello group, > > > > I have the opportunity to put up a UHF ham repeater in a fantastic > spot. > > However, I have some pretty stiff requirements. It will be co- > located with > > an existing Govt. repeater, which is solar powered. I do not have > to supply > > the battery or PV panel, I will use whats there. I have already > hiked up > > and installed the DB408 + LDF4-50 / Polyphaser. Lets see what the > group can > > come up with... > > > > > > > > 1. Needs to be as light as possible, since I have to hike it up to > the top > > of an 8K feet peak. (5 hour round trip). > > > > 2. Must be efficient, no heaters on crystals, etc. > > > > 3. Must be able to operate over wide temperature ranges, no > heating or > > cooling in the box. > > > > 4. Will be solar powered. > > > > 5. I am thinking a maximum of 10 watts. > > > > 6. It needs to be robust, with resistance to lightning strikes. > > > > 7. I picked out a controller, the NHRC 4, seems pretty nice. I > want it to > > be able to turn ON / OFF the main TX in case there is trouble. > > > > 8. I need TX board, RX board, and an RX control RX (420 region). > > > > 9. I already have the duplexer, a mobile type Celwave product. > > > > > > > > I was thinking along these lines: Obtain the RX and TX boards from > a MOT > > MSR2000 repeater, repackage them in lightweight BUD boxes. Install > the > > controller in another box. > > > > > > > > I know the group has better ideas, and I would love to hear them! > Let them > > flow! > > > > > > > > Thank you in advance, > > > > Tracy > > Were I you, I would do the GE MVP with the NHRC drop-in controller > and perhaps Hamtronics or Maggiore for the control RX. Even a cheap > HT or scanner would suffice for a control RX and you would be able to > take advantage of the power save circuitry in most HT's. My MVP's on > UHF and VHF draw about 130 ma during RX (just the radio, no > controller) and the TX current draw would vary with output, but could > be less than 3-4 amps with about 5-10 watts. I have heard of people > using modern style power save circuits to decrease power consumption > by 50% or more during RX idle time. > > You will spend too much time trying to re-invent the wheel by horsing > with the modules and separate enclosures as well as the cables, > feedthroughs, RF connectors etc. Not to mention the extra expense. > The MVP is a known quantity, a known performer, in any environment. > This will be important with the notch only style duplexer. Plus, the > duplexing, tuning, and rack-mounting of the MVP can be done between > breakfast and lunch. That leaves the rest of the day for > installation. ;-) > > Just my two cents. > > John ab6li > > > > > > > > > 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/
