convenient frequency. I would pick something like 184.300, so that the audio output would be at 1000 Hz. That makes the arithmetic easy, and 1000 Hz is well within the passband of the system. WA will now show up at 1000 Hz; WE at 1002.6. Same procedure for "tuning" Argo, as in CW mode, except that we now center on 1000 Hz rather than on the BFO pitch. And if you want the display centered on zero, you can type in a -1000 Hz offset under the setup calibration menu. Example 3: For some reason you want to use LSB mode. Now you need to set the receiver *above* the desired signal frequency, for example at 186.300 kHz to receive 185.300. The audio output frequencies will be inverted, so that WA will appear at 1000 Hz on the Argo display but WE will appear at 997.4 Hz. Maybe these examples will clarify what the QST articles are trying to say about how USB, LSB and CW reception works on modern receivers... And by the way, if you don't see anything on the Argo screen, it's perfectly normal. I ran two receivers (IC-706 and IC-756PRO) all last night on two separate frequencies with two computers, and got nothing but a couple of spurious signals. LowFER reception is not for the impatient! Lyle, K0LR _________________________________ Mike Staines' procedure for producing a "right side up" display with an Icom receiver: "Here's what I do for my 706... When setting up the calibration I subtract the appropriate number to get the display to show "negative numbers". A simple (but real) example: When I want to RX on 185.3 I set the radio to WWVB, CW, and Argo to 30 second dots. Then I go to "full band view" click on the trace for WWVB. The 30 sec/dot trace now gives me a frequency to calibrate against. Just now the frequency was 645.00 Hz. Normally, I could go into "Calibrate" and enter -45. This would show the carrier at 600 Hz but still inverted. So what I enter is 945.00. this is the 645 of the carrier PLUS an offset that would put the display at -300.00. Now the number *IS* negative. But the scale is "upright". Lower freq carriers show up lower on the scale. A carrier on 185.299 will show up on -299, etc. Sounds complicated until you actually step through it. Mike wa1ptc"--__--__--