[VHFcontesting] VHFcontesting Digest, Vol 270, Issue 23

[Roger - W7TZ]

I don't know the amp, but if it has onboard relays you should expect some
increase in current, provided they are powered via the main power supply.

73, Roger
W7TZ
CN83ia


On Sun, Jun 29, 2025 at 9:07 AM <vhfcontesting-request at contesting.com>
wrote:

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>    1. Bias Current for Gemini 70-1K Amp (K3SK at buckwalter.co)
>
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Sun, 29 Jun 2025 10:41:56 -0400
> From: <K3SK at buckwalter.co>
> To: <Moon-Net at groups.io>,       <vhfcontesting at contesting.com>
> Subject: [VHFcontesting] Bias Current for Gemini 70-1K Amp
> Message-ID: <01a801dbe903$f73522f0$e59f68d0$@buckwalter.co>
> Content-Type: text/plain;       charset="us-ascii"
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> What should I see for device DC current on the Gemini 70-1K amplifier?    I
> replaced the Ampleon ART1K6FH device due to failure.    With the new device
> installed the DC supply to the RF deck draws 1 amp powered on at idle.
> When
> PTT is engaged the current rises to 2 amps.   In an earlier conversation
> with Roger at the DX Shop implied 1 amp Idq was what I should see.  The 2
> amp reading seems high to me, but with no technical documentation on this
> amp, I have nothing to base it on.  There is an adjustment on the RF deck
> that is most likely for setting Idq.   Should I set this back to 1 amp with
> PTT and no RF drive?
>
>
>
>
>
> K3SK
>
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> End of VHFcontesting Digest, Vol 270, Issue 23
> **********************************************
>