skipp025 wrote: > Well... to sell radios to Amateurs most mfgrs promise the moon and try > to build it into the radio. Most hams use radios in locations where > the excessive gain is desired (ie not on a mountain top). So a user > outside most metro - busy areas really loves the red hot receiver. > > In a mountain top location... some of the old thick and numb but well > filtered radios like the Micor or GE Master Pro Receivers would be > better suited. > > Hey you GE guys... is the Mater II series as well filtered as the > earlier Master Pro stuff? > > Your remote base Kenwood radio gain problem sounds just like the > same problem I had with my Yaesu Moutain Top Radio. They are after > all made for typical Amateur "Ham" Radio service. > > cheers, > skipp > >> I did; it was. I was able to tame the problem somewhat by reducing >> the 1st IF gain somewhat, resulting in significantly mitigating the >> adjacent channel squelch problem while losing maybe a dB or two at >> most in sensitivity. IMO, a combination of too much IF gain & >> defective or not enough 1st IF filtering.
One of the problems I've noted with many made-for-ham mobiles is actually a lack of low-IF gain, causing the limiter to not go into saturation fully, which makes the rx subject to noise. I think for the most part they are getting the excessive gain in the front end, which makes it more susceptable to IMD, front end overload, and all that other junk. -- Jim Barbour WD8CHL
