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steven.a.gauvry@gmail.com

Joined: Wed, Feb 22nd 2023, 12:39 Roles: N/A Moderates: N/A

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Sigma XR-3000d Feb 27th 2023, 15:45 2 2,061 on 28/2/23
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Sigma XR-3000d Feb 27th 2023, 15:37 1 1,758 on 27/2/23
Sigma XR-3000d Feb 27th 2023, 15:25 1 1,866 on 27/2/23

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Topic Author Posted On
Sigma XR-3000d steven.a.gauvry@gmail.com on 27/2/23
I have a Sigma XR-3000d linear amplifier that I just purchased, used of course.

I am trying to understand the functions of some of the dials on the amp. Certainly it has the band selection, load, and tuning dials. No problem with those.

There are two dials that appear to work in unison that I don't understand. One dial is has three positions, HV, Grid Current, and Tune. The other dial is associated with the "tune" dial and it is labeled "sensitivity". What is the purpose of those two dials?

I suspect they may have a relationship with the meters, one for Plate Amps and one for I.G, H.V., and RF.

Ideas?

Thanks a bunch!

73 Steve WA1TZR
Sigma XR-3000d steven.a.gauvry@gmail.com on 27/2/23
I have a Sigma XR-3000d linear amplifier that I just purchased, used of course.

I am trying to understand the functions of some of the dials on the amp. Certainly it has the band selection, load, and tuning dials. No problem with those.

There are two dials that appear to work in unison that I don't understand. One dial is has three positions, HV, Grid Current, and Tune. The other dial is associated with the "tune" dial and it is labeled "sensitivity". What is the purpose of those two dials?

I suspect they may have a relationship with the meters, one for Plate Amps and one for I.G, H.V., and RF.

Ideas?

Thanks a bunch!

73 Steve WA1TZR
Sigma XR-3000d steven.a.gauvry@gmail.com on 27/2/23
I have a Sigma XR-3000d linear amplifier that I just purchased, used of course.

I am trying to understand the functions of some of the dials on the amp. Certainly it has the band selection, load, and tuning dials. No problem with those.

There are two dials that appear to work in unison that I don't understand. One dial is has three positions, HV, Grid Current, and Tune. The other dial is associated with the "tune" dial and it is labeled "sensitivity". What is the purpose of those two dials?

I suspect they may have a relationship with the meters, one for Plate Amps and one for I.G, H.V., and RF.

Ideas?

Thanks a bunch!

73 Steve WA1TZR
Sigma XR-3000d steven.a.gauvry@gmail.com on 27/2/23
I have a Sigma XR-3000d linear amplifier that I just purchased, used of course.

I am trying to understand the functions of some of the dials on the amp. Certainly it has the band selection, load, and tuning dials. No problem with those.

There are two dials that appear to work in unison that I don't understand. One dial is has three positions, HV, Grid Current, and Tune. The other dial is associated with the "tune" dial and it is labeled "sensitivity". What is the purpose of those two dials?

I suspect they may have a relationship with the meters, one for Plate Amps and one for I.G, H.V., and RF.

Ideas?

Thanks a bunch!

73 Steve WA1TZR
Sigma XR-3000d steven.a.gauvry@gmail.com on 27/2/23
I have a Sigma XR-3000d linear amplifier that I just purchased, used of course.

I am trying to understand the functions of some of the dials on the amp. Certainly it has the band selection, load, and tuning dials. No problem with those.

There are two dials that appear to work in unison that I don't understand. One dial is has three positions, HV, Grid Current, and Tune. The other dial is associated with the "tune" dial and it is labeled "sensitivity". What is the purpose of those two dials?

I suspect they may have a relationship with the meters, one for Plate Amps and one for I.G, H.V., and RF.

Ideas?

Thanks a bunch!

73 Steve WA1TZR

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