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Old 08-16-2012, 08:04 PM
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CO Hunter CO Hunter is offline
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Default FT 857 RX question

Made some good contacts over last weekend mobile/portable. Several good stateside and DX into Ukraine and S. Island New Zealand using the ATAS 120 . QTH was below Tincup pass (St. Elmo side) at 11k ft. I did have some problems though. I had reports of RF feedback into the MH 59 mic and I found others have this issue, I thought maybe some RF was coming through the sunroof. I'll just use the standard mic until I get ferrite bead set up for it.

The other thing that happened is several times I noticed after I TX and let up on the mic button the RX signal had dropped from where it had been (lower S-meter and audio) then after a few seconds it would come back up. I attributed to QSB. It has since happened at my base setup and this morning it happened again and didn't come back up. I tuned to a station that was coming in about s2 with this depressed RX condition so I turned off the radio, turned it back on and the s meter went to s9+. So something is up, either broken or a setting is off. Or, is it all QSB? Any thoughts ?

This is the non "D" version but has the DSP optional chip
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Old 08-16-2012, 11:42 PM
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Seldom Seen Seldom Seen is offline
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Quote:
Originally Posted by CO Hunter View Post
The other thing that happened is several times I noticed after I TX and let up on the mic button the RX signal had dropped from where it had been (lower S-meter and audio) then after a few seconds it would come back up.
Where do you have your AGC set? If not already, try changing to "Auto" and see if any thing changes
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Old 08-17-2012, 07:02 AM
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AGC was already set to auto.

I am new to HF, on the air about a month and a half now. I was talking to another operator last night, who is long time HAM operator, he thought it was just band conditions. It is hard to explain but it sounds a bit different than "normal" QSB.
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