Its actually quite a bad radio, but it looks good and its solid. The AM carrier output is not stable with temp and it varies over time making it a pain to use as an exciter. The RX has a lot of noise/hash, high wide 1st IF lets any close by signal overload the radio, but the passband tuning does work on AM and the filters are ok.
#Icom 756 pro ii pass band filter mods#
I did mods to the audio, but it never sounded good. from the box to heavy contest action, in a matter of seconds, the ic-756proii offers over one hundred built-in if filters, all easily selected from the front panel. Since its just a pot adjustment, you can mark it and put it back if you sell the radio, otherwise you just have to adjust the power output control to only 100 watts out. now icom raises the bar of excellence with the world’s most powerful dsp technology in amateur radio history. For example, if you use the 1.8 kHz filter, 1.9 kHz will be inaudible.
Many hours of research and development went into the design of your IC-756PROIII. But the IC-756 PRO filters are deliberately designed to reject adjacent interference on our crowded bands. you agree with Icom’s philosophy of technology rst. Presently, the PRO has a Low Pass Filter after the RF Power Output Amplifier, that presents a high SWR to the PRO's RF Power Amplifier in the range of 5.100 to 5.999MHz. Digital filters have a flatter frequency response in band and then roll off more quickly. Caution: 5.3MHz operation is not advised until a further modification to the Transmitter Power Amplifier's Low Pass Filter. The high resolution 4.9 inch TFT color dot matrix LCD display provides more operating information than you've ever had before, including a real-time spectrum scope ( 12.5, 25, 50 or 100 kHz).
#Icom 756 pro ii pass band filter plus#
compression end of the filter response to fix the pacific in the Pro II. The Icom IC-756 Pro II is the worthy successor of the famous Icom 756, Icom 756 Pro, and covers all nine HF ham bands plus 6 meters (receive from 30 kHz - 60 MHz). It likely gets dirty at those power levels and something would likely fail eventually, but you could run it on AM at 25 watts out without the ALC kicking in. Update: 5MHz Channel USA/UK operation of IC-756 PRO and IC-756 PRO 2. The even presented a large picture of the virtual passband, which became as you. I did not run it there, but did try it a number of times and nothing blew up.
You can make them general coverage TX, and I adjusted the ALC pot inside the radio so it would put out 150 watts. Presently, the PRO has a Low Pass Filter after the RF Power Output Amplifier, that presents a high SWR to the PROs RF Power Amplifier in the range of 5.100 to 5.999MHz. Caution: 5.3MHz operation is not advised until a further modification to the Transmitter Power Amplifiers Low Pass Filter. I had one when they were new, very nice looking, simple and small radios, very well made as well. Update: 5MHz Channel USA/UK operation of IC-756 PRO and IC-756 PRO 2.
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