I suggest that RF in the shack is the problem. Try some Ferrites on the USB cable and also some clamp ons on the antenna coax.

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I have a dipole antenna in the attic. I had the same problems on a few bands, but not all. I added a 1:1 choke balun in the feedline and it removed the problem for me.

It sounds like RF is not getting back into the shack, and a choke balun placed at the antenna will fix that.

73,

--Hank

KB4MTO / TA5ZC

Hai
After a maintanance on my antenna when I connect HRD to my Laptop I face this problem on 10 MTS Only

The software gets disconnect when I tune the ntenna with my LDG AT-1000 Pro autotuner. This happens only on 10 mts. SWR is well below 1:1.5

I tried my best to locate the problem but could not succed.? Is it a RF leakage if so what can be dome I tried few ferrite beeds along all the doubted cables but of no use
My antenna set up is Inv V with l600 ohms adder line feeder connected to 6:1 Balun and then to CMC balun and to rig

What can be the reason ? what is the remady ?

73s and best regards

VU2TE

Unni

Hello Gentlemen, short update on the 857. Got the random wire up, sloper,? 107 feet long about 50 feet up. Run several counterpoise, need to work on their length, SWR is not very good. The tuner will bring in strong signals but not weak ones. Have enjoyed the stations that I get!! Sincere thanks to all the group, Hank, Jim really appreciate the time and knowledge you shared?
. Best regards, blessing to all. KM4NCI.??

Update:

I was on 80m a few nights ago and all the feedback I got seemed to indicate my distorsion issue was gone. Some even chimed in to let me tweak some menu parameters to make it sound "great".? I was happy as a clam!

I was on for a little over an hour, and then suddenly people said the radio was back to sounding horrible.??

Needless to say, my heart sank and I felt I was back to square one. I've switched between three different MH-31 microphones and none makes any difference.

Anyway... that's the update

Mike
KD7VRG

Hi All,

Purchased this FT-857D from a Ham up near Seattle and had the intent of wanting to be able to do portable operations at 100 watts. After testing it and doing several activations at Parks and other tests on VHF, UHF, 6m and so on I just don’t use it as much as I thought. I’m very partial to QRP operations and haven’t taken this radio out in several months now.?

FT-857D w/3D printed protective arms
MH-31A8J Microphone
CT-62 CAT Interface Cable
YSK-857 Face Separation Kit
LDG Z-100Plus AutoTuner
LDG Y-ACC 3’ Cable for Tuner Control
LDG FT-Meter (SWR Meter)
FT-857D Circuit Diagram
FT-857D Operating Manual
The Nifty! Mini-Manual Quick Start Guide for FT-857 and FT-857D

Asking $1,200 for all together. This would be ready to go right out of the box when you add an antenna and the coax.
PayPal preferred and I’ll cover shipping.

Here is a link to one of my YouTube videos showing the radio working great:?

Thanks & 73,

Mike (K0FYR)
Ham-Solo

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Thanks Larry,

I turned the PROC completely off and there is a noticable improvement. I also dialed the mic gain down to 10.?
I will be on the air with it tonite to get some real time feedback

Thanks!

Mike

Hello,

For what it's worth, my SSB microphone gain level (Menu 81) is set to 50, adn the AM microphone gain level (Menu 5) is also set to 50; however, I don't use the processor because I received better audio reports with the processor off.? If the audio is clipping try turning off the processor to prevent overdriving the microphone audio gain circuit.? For a bit of added punch without using the processor set the switch on the back of the MH-31 to Position 2 (cuts off the low frequencies).

73,
Larry

Hi Larry,

No...I'm using the stock MH-31.

The distorsion at this point, seems to be associated with SSB Mic Gain and/or PROC Level.
The audio sounds "clipped" and overdriven.


Mike

Hello,

Thanks for the responses guys!

So far this morning I've been experimenting with menu settings, and by lowering the processor lever down to only 1 or 2, (menu -074) I can eliminate almost all distortion. Normally it is at 50%.

AM sounds perfect at 50%, so it appears to just be an issue with SSB.

The mic cable and coax have clip-on ferrite chokes on them and SWR is virtually flat 1:1.
Other radios on same antenna are fine. Antenna is 80m wire flattop dipole.

Still perplexed though...

Mike
KD7VRG

CatRadio 1.2.0 is now available for download

Main changes:

• VFO Display on Sub VFO
• Clarifier RIT / XIT commands
• Up / Down VFO buttons
• Repeater shift offset
• DCS code and squelch
• Updated Radio Config Dialog
• Bug fixes and various improvements

Since it is only on 80M and not the other bands, I would be looking for bad SWR or RFI on that band. I.E. It sounds like an antenna system issue.

Leonard K. Pennock
AD7AS

Those who walk bravely through life, unafraid of loss or failure,
find that they very rarely lose or fail.

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Hello all,

I have a peculiar problem with my -857D and wonder if anybody can share some insight.

I'm getting reports of my TX audio sounding "distorted and clipping" while on 80 meters LSB.

This doesn't appear to be happening on some of the other bands. I've had several QSOs on 17, 20 & 40m, and all parties report good solid audio with no distortion.

Any ideas why something like this would be isolated to just 80m?

Any help appreciated...


Mike
KD7VRG