It is just that I am more interested in squeezingĮvery last attojoule from the ionospheric disturbances caused by my fellow Oh well, there is always two sides to every coin, as a gee whiz spiffoĪppliance with lots of flexibility and toy appeal the 756 Pro II is great and At over 3kHz off centerįrequency his signal will still be obnoxious this is due to his intermodsīeing only 20 odd dB down (3-4 S units, 1 Watt at 100 Watts PEP out)Īnd you will understand why I am so critical of the IMD on He is transmitting using your narrowest filter. Test (voice) signal SSB and you tune across the spectrum from where Give the following test a try: set up with a friend at one skip zone inĭistance (1,100 miles or so) who has a Pro II and have him transmit a "legal limit" amp to the legal limit unless it is based on the more expensive 455 MHz IF filtration.Īnother problem is the lack of output power, 100 watts won't drive a Strong carrier with the ICOM DSP driven units - this was easier on the I had difficulty picking out weak stations 3-4 kHz off from a very The DSP and AGC lie) or add IMD in the first or second due to in-band Having all that DSP is nice, unfortunately it is behind a fairly broad bandġst and 2nd IF which allows it to either pump the gain in the third IF (where both Great when it is listened to "dead-on" but the skirts are, for me, Result: It is a nice radio to use, just has two tiny problems of AGCĭe-Sensing and Transmit IMD - Generally I can "hear" a PRO IIĪbout 5kHz off center frequency due to the IMD generated. I have read the praise of the 756 Pro II and as a result gave one a test drive.
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