Re: [Repeater-Builder] Preamp Info Wanted

2008-05-16 Thread Maire-Radios
we use a lot of TX RX products John - Original Message - From: Howard To: Repeater-Builder@yahoogroups.com Sent: Friday, May 16, 2008 10:56 AM Subject: [Repeater-Builder] Preamp Info Wanted Hello to all and thanks for reading. I am in the market for a preamp for my

Re: [Repeater-Builder] Preamp Info Wanted

2008-05-16 Thread Jim Brown
Howard, there are a couple of things to keep in mind on installing a preamp: 1. The losses in the duplexer and feedline cannot be made up in a preamp placed at the receiver input. You can increase the receiver gain with a preamp, but those losses are not recoverable. 2. You want to place the

Re: [Repeater-Builder] Preamp Info Wanted

2008-05-16 Thread Nate Duehr
Jim Brown wrote: Sensitivities in the order of .35 uV for 12 dB SINAD are common and they can be improved with a preamp, but if you are already using a receiver with .15 or so sensitivity, you will not be able to see any improvement by adding a preamp. In fact, it is quite possible to

RE: [Repeater-Builder] Preamp Info Wanted

2008-05-16 Thread ka9qjg
Great info given But something else to consider Where is the Repeater Located , Maybe a Place You cannot get to Easy in the winter on a Mountain Etc , I use the advanced research Preamps on My 440 and 220 Repeaters , They work Great Except when the GasFet goes Bad it is Like a 20 DB Or