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Hi folks...
I have 2 857D's one with a YT-100 and one with the MFJ-939.? I would like to digital sound card modes with the 857D that has the MFJ-939.? How do I set up the 939 to work as an external tuner to free up the CAT port?

I could not recommend another YT-100 even though it has an 8 pin pass through.? It frequently does not tune correctly.? It has been back to the factory on 2 different occasions for repair (one warranty, and one I paid for).? Tuning on 60 meters is a pain.? Many times pressing the tune button will lock the radio in transmit and no tuning action happens and I have to turn the radio off.? It often leaves the radio in AM mode.? Sending CW will sometimes cause it to start tuning.? FT8 will cause it to start tuning even at 5 watts.? I bought another YT-100 thinking I had a lemon, but also has all of the anomalies. ? Probably gonna buy a 939 for other 857D, but not sure how to set it up.

I really like the TUNER function from the face of the radio with the 939, but need that CAT port.? Any advice is appreciated.

Hank
K4HYJ

Hi Hank,

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The CAT port is also available via the microphone connector.

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There have been plenty of messages regarding this over the years. Just do a search in the previous messages.

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A google search on “CAT via microphone connector” will also turn up plenty of results including adaptor cables from various sources.

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73….Eric VK2VE.

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From: [email protected] <[email protected]> On Behalf Of HB via groups.io
Sent: Friday, February 2, 2024 10:00 AM
To: [email protected]
Subject: [FT-857] 857D and MFJ-939

?

Hi folks...
I have 2 857D's one with a YT-100 and one with the MFJ-939.? I would like to digital sound card modes with the 857D that has the MFJ-939.? How do I set up the 939 to work as an external tuner to free up the CAT port?

I could not recommend another YT-100 even though it has an 8 pin pass through.? It frequently does not tune correctly.? It has been back to the factory on 2 different occasions for repair (one warranty, and one I paid for).? Tuning on 60 meters is a pain.? Many times pressing the tune button will lock the radio in transmit and no tuning action happens and I have to turn the radio off.? It often leaves the radio in AM mode.? Sending CW will sometimes cause it to start tuning.? FT8 will cause it to start tuning even at 5 watts.? I bought another YT-100 thinking I had a lemon, but also has all of the anomalies. ? Probably gonna buy a 939 for other 857D, but not sure how to set it up.

I really like the TUNER function from the face of the radio with the 939, but need that CAT port.? Any advice is appreciated.

Hank
K4HYJ

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