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On Sun, Oct 1, 2023 at 08:06 PM, Barry wrote:

And I also love my FTDX5000 even if it has minor issues like the 250hz thing.

With a "No." response in the very beginning of your post, can I take that to mean your FTDX5000 has the issue of transmitting "250hz" even after its initial warm-up period of 3 to 5 minutes?

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>> Correct. And I am the one that the video is referring to as the person who informed Mark at Palstar about the FTDX5000 and LA1K issue. Mark wanted me to keep him in the loop

as he had no one else willing to go through the troubleshooting like I did. You replied saying you doubted the FTDX5000 was causing the issue and

went on to blame the LA1K. I disagreed then and still do and proved the LA1K was just fine and was the FTDX5000 causing the bypass.

The LA1K is a great amp. With the help of some very highly skilled and knowledgeable ham operators in the Edmonton area, they helped me resolve the issue and I passed

The info onto Mark at Palstar and to this forum for FTDX5000 users.

On Tue, Jul 25, 2023 at 04:01 PM, Barry wrote:

My FTDX5000 sends out a transient 250hz pulse for approx 1.3 microsecond of each TX. Because the amp wont be operational outside of the Ham Bands, and 250hz is outside, it kept going into bypass which by design, the LA1K is built for.

Btw in accordance with 47 CFR Part 97 (up to date as of 5/04/2023), paragraph 97.313(k), "No station may transmit in the 135.7-137.8 kHz (2200 m) band with a transmitter power exceeding 1.5 kW PEP or a radiated power exceeding 1 W EIRP."? So, licensed Amateur Radio operators in the United States of America are permitted to operate below 1.8 MHz; but certainly not at the 250 Hz output as you have observed on your FTDX5000.

In any event, while it might be a minor issue transmitting at 250 Hz in Canada, it isn't permitted for a licensed Amateur Radio operator doing so in the USA.

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>>> I would suggest contacting Yaesu about this concern and leave me out of it. The filter resolves the issue completely.

73
Ray
KJ5MI