Best Regards 73 Yves-Claude Arcand - VE2AYX Your comments would be very much appreciated. I operate with a Solid State linear and because of the ALC overshoot, the TS-590S is ruled out. I am looking to buy the best possible receiver for the money So the FTDX-5000D is out of my price range and I do not need all the bells and whistles. What Yves needs is antenna directivity to reduce his noise I am on the market for a new tranceiver and I live in a very noisy area. Urban noise level typically 20 dB worse Low noise floor only useful in a quiet rural location Is Noise Floor / Sensitivity the Issue ? Ĭollins 75A-4 Hilberling Flex 3000 Drake R-4C Elecraft K3 TS-990S TS-590S Flex 5000 FTdx-5000D Orion II T-T Eagle Testing has to approximate crowded conditions such as:ĬQ Worldwide ARRL DX WPX DXpedition with the whole world calling ! If the test = good But on-air performance = poor This implies the receiver isn’t being tested properly. The receiver was a total flop in 160 meter CW contests.Drake R-4C received a good review in QST, but.1975 was the year of major articles on improved performance measurements.Sensitivity, Selectivity & maybe Crossmodulation.1950s through 1974 published parameters:.Transceiver Performance & Evolution of lab testing Rob Sherwood NCØB Change has occurred in jumps, sometimes better, but often worse for a time Sherwood Engineering
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