Scott, I have used both Angle Linear and ARR preamps, as well as factory GE and Motorola units depending on the situation. I personally like the Angle Linear preamps over the ARR units. Depending on the site, a lower gain unit such as the factory GE preamp is a better choice on a site with a higher than normal noise floor. The extra 10 db or so more gain that the ARR and Angle Linear units have over the factory GE unit is negated due to the additional gain of preamp amplifying site noise instead of the received signal.
If you are on a quiet site with a low noise floor, you can run a lot of preamp and have a receiver with excellent sensitivity. The GE receiver should open squelch about .3uv or less and 20 db of quieting should be .5uv or less. If your receiver does not meet the factory specs, fix it first and then add the preamp. If the receiver is sick, adding a preamp to a broken receiver can cause other problems for you down the road. Good Luck, Joe --- In [email protected], "Scott Avery" <wa6...@...> wrote: > > Hello All, > > I am a looking for a preamp to go on the WR6ABD 2 meter repeater > on Mt. Loma Prieta in San Jose. > The club does not have a lot of money these days, and membership dropping fast! > We are currently running a GE Master II with .5uv sensitivity into split antennas > spaced vertically about 50' with 1 pass bottle on TX and one on RX. One duplexer > on 2 meters is broken internally, and buried in the cabinet. A full day just to get out and back in. > Not to mention repairing the solder joints. > > I am looking for a suitable preamp with low noise for the receiver. > Something like an Angle, ARR, VHF Engineering etc. > I will be going up to Loma Prieta this next weekend Jan. 31 to do some other work. > It would be great if I had one in hand to install. > If I can find one in the Monterey/SF Bay area that would be awsome, and could pick up. > > Please email me directly wa6...@... if you have what the LPRC needs. > > Thanks and 73... > > Scott WA6LIE > www.lprc.net > www.remotehams.com >
