Jim, I didn't say that, I quoted someone saying that. Hence the > leading the line. And I agree with you it might be as much a problem in the receiver path as the transmitter path, the fact that only

So that would be multipath then likely? -- --w8lvn--

On Sat, Feb 22, 2020 at 07:30 PM, Philip Rose wrote: Doesn't explain when the difference isn't 120 or 100 Hz.It's unusual but not impossible to see Doppler shifting aka aircraft scatter of signals on

So i am under the impression that switching mode power supplies don't operate at mains frequency, or at least their switching will spit off an array of frequencies due to the switching. AC Mains I can

Nope, it's AC mains-related. If there's any significant 50Hz or 60Hz ripple coming out of the PSU (especially an SMPSU) on the DC line that's powering the rig, or if there's anything else in the

Doesn't explain when the difference isn't 120 or 100 Hz. Phil GM3ZZA -- 73 Phil GM3ZZA

Hi Phillip and all. I’m glad that this topic has turned up again as when i commented (i think it was last year) i was told to check my own equipment or that was the general comment. A lot of water

Well, the sum of the two frequencies is 2832. But if we presume that the faint one is a result of the IMD, then the 120 hz difference seems like it might be audio hum that is mixing with the primary,

Hi, That is normally generated by a power amplifier with less than perfect battery voltage regulation so that a full wave rectification leaves a 120 Hz sawtooth wave riding on top of the battery

This can be caused by overload in the receive audio path between radio and computer sound card, and by overdrive in the station being double-decoded. If the difference is 120 Hz, it might be caused by

I've noticed this loads of times with both FT8 and PSK31. I assume it's an IMD construct where non-linearity or over-driving of the transmission is generating spurious decodable signals. Or maybe

Thanks for the tip about muting a topic! 73, Ken K4XL -- Ken - K4XL BoatAnchor Manual Archive BAMA - http://bama.edebris.com

Folks: Here is something I have seen a couple of times. A station is decoded on two frequencies at the same time, at vastly different db levels. Here are two examples from one

Yes, computer to YT-100 to 857d cat input. The other USB goes computer to signalink to 857d data input.

Check the K6XX web page, loads of stuff for the FT-8xx series of rigs. http://www.k6xx.com/ John VE3KKQ

Bob, I certainly agree that spam should be clobbered. But discussing how to legally use FT8 on 60m doesn't seem to be spam to me. The use of WSJT-X on a particular band in a lawful fashion strikes

If you are not going to use the 857 for phone, CAT is possible through the mic connector. John V3KKQ

Bob, While I agree with you, the subject has been beaten to death, we as users have very little say in how the group is managed. The owners/mods get to decide that. I see only a few reasons for

I'll try that. Dick DeRose KG5FNS 561-441-6376 dderose911@... www.dickderose.blogspot.com Life'sjourney is not toarrive at the grave in a well preserved body, butrather to slide in sideways totally

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