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Yes, be careful not to break the plastic backing. It's blue in most cases.

Looking for some help on how to remove the ribbon cable between the main and pa boards on a FT-857. Don’t see any kind of latch on the jst connector so can I just pull it out? 73 art N2AJO

Thank you Barron for the tips. Will go through tests to find out how it can be resolved to a minimum 73s and regards Unni VU2TE

If you were to temporarily short the antenna the noise should disappear (almost completely) 80 meters is pretty noisy most places and could be made much worse of you are in an urban area with cheap

Yes Ron. might be some related equipment might be giving problems. Will try one by one 73s and regards Unni VU2TE [email protected]> wrote:

Dear Barron When the ant. is disconnected the noise is less. I feel it might be a propagation problem. Is the ceramic filter common for all bands and separate for each band. ? Will the antenna

Unless that noise is still there with the antenna disconnected, I'd look for some local source such as a computer, wall-wart power supply or appliance.? Run your radio off 12vdc and start turning off

If the radio is still noisy without the antenna connected the ceramic filters are cheap and not too difficult to replace, but you have to remove the main board to get at the bottom to unsolder them.

Thank You Barron will try Regards Unni VU2TE

Check the noise level without the antenna. Sometimes the ceramic filters get noisy.

Hi all On 80 mtr (3.600 our local net freeq) the Rx. gives lot of noice which supress the Rx signal quiet a lot. The net control gives me a rst of 59+10. where I should look for the problem with

1 Scorpion Antenna 16 point hub for standard screwdriver antenna * * No longer sold by Scorpion Antennas. 16 Scorpion Stinger Antennas. 4 80 Meter Stingers. 4 40 Meter Stingers. 4 ? 20 Meter Stingers.

No matter the blocking caps, I suggest the filters are the culprit Theo as those devices are quite inexpensive, and often fail in spite of blocking caps for some reason in some rigs.? Regards, Phil /

Try shorting the antenna connector and see what the noise sounds like. Randy (KE5EOT) ARRL, QCWA, ARES, RACES, ROWH http://ke5eot.webs.com

No. Right at the end of the video I show there is no antenna connected. Regards Theo VK5IR wrote:

Silly question, did tou have an antenna connected to the radio? Probably not, but thought I'd ask anyways. Regards, Tony VA7TF VE7ACF

I'll throw in this... pop the covers off and make sure all the PCB mounting screws and ground strap screws are making good contact and are tight. My unit is 15 yrs old and has been mobile in several

In my uneducated opinion, I doubt it's the filters. I had those replaced about 6 years ago, with DC blocking caps fitted at the same time. Regards Theo

It may be the ceramic filters "cracks noise" because of moisture inside of them. https://dh1tw.de/replacing-yaesu-ft857-if-filters/ 73's A segunda, 27/06/2022, 10:44, Theo Marinos

Hi guys I have discovered that my 857D has developed some internal noise. The radio was removed from the car about 18 months ago as I got a company vehicle, so I took the radio out of my personal car