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  1. YaesuFT847
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Excessively low reception and transmission

 

Hi, I have an FT-847 that appears to have no TX or RX on any band or mode, but it transmits at much less than a watt. When I put an antenna on it, I could hear myself very low on another radio in my shack. Likewise, when I transmitted with the other radio, I could hear myself on the FT-847, but very low. Any suggestions on what could be wrong?
 
Edited

Is that on all bands, HF, VHF, and UHF?
--
Greetings from Erik Rothuis (PA2ER), Terborg Netherlands.
 

Yes, on all bands
 

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Is it all modes as well?

From: [email protected] <[email protected]> on behalf of 2191E NP4ET via groups.io <etantennas@...>
Sent: Monday, April 7, 2025 7:45:15 AM
To: [email protected] <[email protected]>
Subject: Re: [YaesuFT847] Excessively low reception and transmission
?
Yes, on all bands
 

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?Anything connected to the ALC socket? If not, then check the socket to see if 0.1v is present on TX and that should rise to 0.6v on RX….. from memory.?

De Spence G5STO


Sent while portable! please excuse typos.

On 7 Apr 2025, at 07:53, M0CNL via groups.io <m1cxz.m0cnl@...> wrote:

?
Is it all modes as well?

From: [email protected] <[email protected]> on behalf of 2191E NP4ET via groups.io <etantennas@...>
Sent: Monday, April 7, 2025 7:45:15 AM
To: [email protected] <[email protected]>
Subject: Re: [YaesuFT847] Excessively low reception and transmission
?
Yes, on all bands
 

Yes
 

First check the +5, and de +8 Volt lines, on J1004 of the AF-CNTL-UNIT.
--
Greetings from Erik Rothuis (PA2ER), Terborg Netherlands.
 

First is this on all band LF, HF, VHF, UHF?

73

Andrew

Get
On 6 Apr 2025, at 21:41, "2191E NP4ET via " <gmail.com@groups.io target=_blank>[email protected]> wrote:

Hi, I have an FT-847 that appears to have no TX or RX on any band or mode, but it transmits at much less than a watt. When I put an antenna on it, I could hear myself very low on another radio in my shack. Likewise, when I transmitted with the other radio, I could hear myself on the FT-847, but very low. Any suggestions on what could be wrong?
 

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Hi Andrew, he replied it is.

Quote “?Yes, on all bands”.


Sent while portable! please excuse typos.

On 7 Apr 2025, at 07:45, 2191E NP4ET via groups.io <etantennas@...> wrote:

Yes, on all bands
 

Hi, if you find you need parts for the FT-847 like the AF-CNTL board I have them all.
?
Adam Farber W4AJF
Cooper City, FL

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