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Well thanks for going over it with me. Sometimes another brain involved is enough to figure out most stuff. I hope this problem looks familliar to someone.
I'll keep trying. May need to find an old BA for am I guess. Anyway, have a good day and 73,
Joe K0TRT
jwhawg

Thats A OK thats what were all here for but now that you got me thinking and curious Ill have to watch because this also has me stumped and its worse when you dont have the radio infront of you if you see what Im saying. 73's

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""""was not thinking of a cber sat with his makita screwdriver winding round the presets untill his meter said s9+60db from a guy on a handheld 15 miles away""""

I know what you mean Tony and thanks again. I'll let you know what I find.
Joe

If you use an external "peak" reading wattmeter does it still show to be backing up? On some radios I have had to play with the mike gain and compressor (if it had one) in order to get any forward movement out of it. Like it has been already stated most of the time if you lower the dead key to 10 to 15 watts they would move forward if only a little bit. Some of them can be a PITA to get set right but once you do...............

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BC

My Bird43P Peak reading meter always shows backward deflection on my Icom 746 Pro. I have never figured out why it does this. The active peak reading meter in my Ameritron tuner does not show this. My only guess is that some combination of mic, rig, and other audio gear causes the phase to be negative and somehow the meter reacts to this. Keep in mind that I have no idea whether this could occur...it's purely speculation on my part.

I threw the towel in on this one to like I was saying to him earlier today I have seen this but without the radio infront of me IM LOST!!

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""""was not thinking of a cber sat with his makita screwdriver winding round the presets untill his meter said s9+60db from a guy on a handheld 15 miles away""""

Yes it does swing backwards on a bird peak reader. And every other I have tried. I was also hoping that it was just a meter action, or reaction, but I send a negatively swinging signal to other receiving radios. Staions say I have great audio, but swing from say s-9 back to s-7 or whatever.

Was wondering if you had transmitted on am with your 746? Just curious as to seeing if it also swings backward to receiving stations?

Very interesting...new member and happened to find this site after a Yahoo search for something totally unrelated. What do you know, this thread was right near the top.

I have had a very similar issue with my radio (FT-900AT) for quite a few years. The funny thing is that this happened right after a visit to the Yaesu factory (in Cerritos) for some warranty work. The radio for whatever reason blew a resistor and capacitor (I believe, though I don't have the exact report on-hand right now), which ultimately ended up with nothing but RF and no audio at all. After getting the radio back, it appeared to be backswinging on AM as well.

I haven't tested it side-by-side with another radio in years, so I don't remember if it was actually swinging backwards on another radio's S-Meter. The ammeter on my power supply shows a good drop in amperage when using the radio, from deadkey to modulation, but after hooking it up to a watt meter, I got some interesting results. My peak-reading watt meter showed that it would deadkey around 40 watts and swing up to about 130 watts when talking. The radio itself puts out about 130 watts on all other modes as well.

So I guess I'll sit it side-by-side with another radio one of these days and see what the S-meter is saying.

Interesting thread. Nice to finally come across a discussion on this.

Well, Now we might be getting somewhere! The very same rig (FT900AT). Please, if you can, take some time and see if it really is sending a backward swinging signal to another radio. Post what you find. And thanks a million!
73 Joe K0TRT
jwhawg