Thinking About a New Radio

I'm always looking at the new radios that hit the market. Right now my eyes are on a radio that may not even hit the U.S. market for a year or so, and when it does, I may not even be able to afford it. That radio is the Icom IC-7600 that I briefly mentioned in a recent post. The speculation is that the 7600 will build upon the IC-756 PRO series of radios, but also borrow technology/features from the IC-7700/7800 series. If the speculation promises to be true, it should be a great radio.

My main radio currently is the Kenwood TS-2000X, with the Yaesu FT-897D as my secondary radio. The 897D is a great radio and I've made some DX contacts. I've added the LDG FT-897 autotuner, and the SSB and CW filters from W4RT. It's just that I've noticed when operating the digital modes on the TS-2000X that good IF filtering comes in handy. It's nice to be able to narrow the passband to remove offended signals, and particularly to keep them from driving the AGC. The narrowest IF filter that I have on the 897D is the 500Hz CW filter, and there is some IF shift that you can perform on that radio. Any tighter filtering is done with the DSP circuitry in the AF stage. The AF stage is past the AGC circuit. If you play with a digital mode program such as MixW for a while, you will notice that it will properly decode any one signal that you put the cursor on. As long as all signals are of equal strength you can actually have the passband wide open. So it really boils down to the effects of the AGC circuit and the AGC circuit will act on anything that makes it past the IF filtering. Rarely are signals of equal strength so the AGC will act on the strong signals and drive the remaining signals into the noise. If you can just filter them out at the IF stage, the AGC can't act on them and drive the desired (albeit weaker) signal into the noise.

So one of my main reasons to look for a new radio is to acquire one that has good IF filtering but is also portable. The radio that I am looking at is the Icom IC-7000. It has many features, including the IF-DSP filtering, but is somewhat smaller than the 897D. It is more expensive than the 897D and I will need to add an autotuner (my newly acquired Palstar AT2K is not really portable). LDG sells the AT-7000 specifically for that radio. I will also need Heil cables for my microphone and Proset Plus, and a CI-V interface for the computer control.

If I end up buying the IC-7000, I will likely sell the 897D and everything specific to it.

73