Nate, That's what I get for doing this stuff too late at night after being on a mountain top for 12 hours.
Thanks for the clarification. Joe - WA7JAW --- In [email protected], "Nate Duehr" <n...@...> wrote: > > A new person reading this might read the paragraph on pre-amps to use, and > then think that third paragraph is the sensitivity numbers you should > achieve AFTER installing the pre-amp. > > Those are the numbers you should see out of a stock MASTR II *without* a > pre-amp of any kind. > > I'm sure you know this, Joe. Just replying for the archives... The key word > in paragraph three is "factory specs"... Joe's talking about the BARE MASTR > II receiver there, folks. > > Nate WY0X > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Joe Burkleo > Sent: Sunday, January 25, 2009 11:14 PM > To: [email protected] > Subject: [Repeater-Builder] Re: Wanted: 2 Meter Preamp > > 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" <wa6lie@> 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 wa6lie@ if you have what the LPRC needs. > > > > Thanks and 73... > > > > Scott WA6LIE > > www.lprc.net > > www.remotehams.com > > > > > > ------------------------------------ > > > > Yahoo! Groups Links >
