Advanced Receiver Research P50VDG 6M Preamp

[James Rogers]

I love my K3s and have been using the K3s' built in preamp on 50MHz
meteor scatter and have made many contacts with it. Today I got an ARR
P50VDG out of the closet and hooked it up to the K3s. This little GasFet
really cooks! .5dB NF, 24dB gain. I was amazed at the difference. Sorry
K3s, the P50VDG will remain in place!

I also have in my 2M setup (K3s/K144XV) an ARR SP144VDG RF switched
preamp in the coax line from the K3s/K144XV to the BEKO HLV-1000 amp.
The experience with that addition to the shack is what drove me to check
out the P50VDG. I am glad I did.

For all of you HFers moaning over the conditions, come on up to the
higher frequencies and have some fun on meteor scatter or moon bounce.

73s Jim, W4ATK

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[Ken Arck]

If you really want an improvement, you should move the preamps to
your masthead.

(not to rain on your parage but you do realize that the .5 dB noise
figure is essentially meaningless if the preamp is in your shack, right?)

Ken


At 01:32 PM 1/25/2017, you wrote:

>I love my K3s and have been using the K3s' built in preamp on 50MHz
>meteor scatter and have made many contacts with it. Today I got an
>ARR P50VDG out of the closet and hooked it up to the K3s. This
>little GasFet really cooks! .5dB NF, 24dB gain. I was amazed at the
>difference. Sorry K3s, the P50VDG will remain in place!
>
>I also have in my 2M setup (K3s/K144XV) an ARR SP144VDG RF switched
>preamp in the coax line from the K3s/K144XV to the BEKO HLV-1000
>amp. The experience with that addition to the shack is what drove me
>to check out the P50VDG. I am glad I did.
>
>For all of you HFers moaning over the conditions, come on up to the
>higher frequencies and have some fun on meteor scatter or moon bounce.
>
>73s Jim, W4ATK
>
>______________________________________________________________
>Elecraft mailing list
>Home: http://mailman.qth.net/mailman/listinfo/elecraft
>Help: http://mailman.qth.net/mmfaq.htm
>Post: mailto:[hidden email]
>
>This list hosted by: http://www.qsl.net
>Please help support this email list: http://www.qsl.net/donate.html
>Message delivered to [hidden email]

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[Jim Brown-10]

On Wed,1/25/2017 1:32 PM, Jim Rogers wrote:
> I love my K3s and have been using the K3s' built in preamp on 50MHz
> meteor scatter and have made many contacts with it. Today I got an ARR
> P50VDG out of the closet and hooked it up to the K3s. This little
> GasFet really cooks! .5dB NF, 24dB gain. I was amazed at the
> difference. Sorry K3s, the P50VDG will remain in place!

Hi Jim,

I bought an ARR GasFET for 6M when I still lived in Chicago, and still
use it with my K3 at the RX antenna patch point. It is, indeed, a bit
better than the Elecraft preamp.

73, Jim K9YC

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[Jim Brown-10]

On Wed,1/25/2017 2:01 PM, Ken Arck wrote:
> (not to rain on your parage but you do realize that the .5 dB noise
> figure is essentially meaningless if the preamp is in your shack, right?)

Not true. Yes, at the antenna end of the feedline is better, but the NF
will apply to whatever signal the preamp sees. AND it strongly depends
on how noisy our QTH is as compared to the circuit noise withing the
radio/preamp. Preamps won't help much if you have a lot of RX noise.

A good rule of thumb is that you are not limited by circuit noise if the
noise level increases by 10 dB when you connect the antenna to the
radio/preamp.

73, Jim K9YC

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