On 4 Sep 2006 16:51:16 -0700, "Telstar Electronics"
wrote:

+++
+++Slow Code wrote:
+++ (avj 1) wrote in
+++ :
+++
+++ what's a good recieve pre amp? the Dosy or the Maco.
+++
+++
+++ It's amazing the things people buy just to hear CB'ers better.
+++
+++ Sc
+++
+++The real problem is that the pre-amps don't accomplish anything. They
+++are just a gimmick since they are unable to improve the signal-to-noise
+++ratio. All they do is boost everything... noise and all... LOL
+++
+++www.telstar-electronics.com
*****************

Actually a well designed preamp will improve signal to noise
performance. The real issue is that addign a preamp to a poorly
designed receiver will dramatically lower the dynamic range of the
first RF stage and mixer. Also at CB frequencies the usable
sensitivity due to atmospheric noise is about 0.25 microvolt per
meter. This is easily acheivable in even the poorest designed
receiver.

No preamp can compensate for loss of signal in the coax or do to a
poor antenna design/setup. Once lost, it is gone.

james