Yaesu: Inexpensive wall power for FT-817/818

tweiss3

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So, to reduce the things I carry around every day, I have taken my FT-817 from it's dusty place on the shelf, and found a place on my desk where it is within reach, and I can hear it on very low. My problem now is the internal battery has limited life, and I'd like to find a permanent power source that doesn't take up much space. I currently have the windcamp power pole adapter to keep from breaking the barrel connector/port.

I tried a 12V 5A laptop style power supply, but it was incredibly noisy. Goes from S3-4 to S+ on the meter, can't hear anything. Unplugged I can hear plenty well with the S4 noise floor. As soon as I disconnect that power (still plugged into the wall) the noise goes away. 5 clamp on ferrites did nothing (2 large enough to get 3 wraps in each).

Looking at small desktop power supplies at DX, they cost more than I anticipated ($140), and seem larger than I'd like to carve out a space for.

DX now carries Bioenno batteries, I could get a 3Ah with charger for about half ($80) the cost of a power supply. Is that a better option? Any huge downsides to leaving it plugged to the charger?

The radio only needs 2A, so 5A would be plenty. Any other ideas worth trying?
 

Hit_Factor

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Charger is probably noisy too. But, if you charge while not using the radio it might not matter.

Bite the bullet and get a linear power supply. Switching power supplies can be noisy.

Be sure to check peak amperage and continuos amp rating for radio and supply.
 

tweiss3

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