...about the PR6...

[John Ragle]

Am I correct in gathering that the PR6 is a RECEIVE-ONLY preamp (i.e.
that it can't be used with the same antenna/feed line as the TX? (vide
p. 3 manual).

If so, I would be much more interested in a good low-noise GaAsFET
antenna-mounted (weatherproof) preamp with T/R switching (I would be
using it with my K3/100), and would gladly receive info about
availability of same.

John Ragle -- W1ZI
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[W7GJ, Lance]

On 6/21/2010 5:02 PM, John Ragle wrote:

> Am I correct in gathering that the PR6 is a RECEIVE-ONLY preamp (i.e.
> that it can't be used with the same antenna/feed line as the TX? (vide
> p. 3 manual).
>
> If so, I would be much more interested in a good low-noise GaAsFET
> antenna-mounted (weatherproof) preamp with T/R switching (I would be
> using it with my K3/100), and would gladly receive info about
> availability of same.
>
> John Ragle -- W1ZI
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> This list hosted by: http://www.qsl.net
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>

Yes, it needs to be mounted right on the K3.  Use good low loss feedline and keep the
loss below 1 dB on 50 MHz and it won't make any difference that the preamp is in the
shack.... Then when you add an amplifier, it will still work great and you won't blow
it up!

GL and VY 73, Lance

--
Lance Collister, W7GJ (ex: WN3GPL, WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX)
P.O. Box 73
Frenchtown, MT  59834  USA
QTH: DN27UB
TEL: [phone]
URL: http://www.bigskyspaces.com/w7gj
2m DXCC #11/6m DXCC #815

Interested in 6m EME?  Ask me about subscribing to the MAGIC BAND EME email reflector!
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[Don Wilhelm-4]

John,

Yes, the PR6 can be used on the K3 with a single TX/RX antenna - if the
KXV3 option is installed in the K3.

The PR6 is easy to place in the RX only path if the KXV3 is installed.  
The KXV3 option has RX ANT OUT and RX ANT IN connectors - the PR6 is
normally placed between those two connectors which places in in the
receive path, but not the transmit path.  So yes, in that case it can be
used with a single TX/RX feedline connected to the normal antenna
connector(s).

See the K3PR6 Manual which you can download from the Elecraft website.

73,
Don W3FPR

John Ragle wrote:

> Am I correct in gathering that the PR6 is a RECEIVE-ONLY preamp (i.e.
> that it can't be used with the same antenna/feed line as the TX? (vide
> p. 3 manual).
>
> If so, I would be much more interested in a good low-noise GaAsFET
> antenna-mounted (weatherproof) preamp with T/R switching (I would be
> using it with my K3/100), and would gladly receive info about
> availability of same.
>
>  

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[KK7P]

> Am I correct in gathering that the PR6 is a RECEIVE-ONLY preamp

yes

>  (i.e.
> that it can't be used with the same antenna/feed line as the TX? (vide
> p. 3 manual).
>  

no

It is in the receive path after the T/R switch in the K3.  SO, for
example, I use my SteppIR antenna for Tx and Rx on 6m, and the PR6 is in
the path on Rx and out of the path on Tx.

73,

Lyle KK7P
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[KK7P]

>> Am I correct in gathering that the PR6 is a RECEIVE-ONLY preamp
>>    
>
> yes
>
>  
>>  (i.e.
>> that it can't be used with the same antenna/feed line as the TX? (vide
>> p. 3 manual).
>>  
>>    
>
> no
>
> It is in the receive path after the T/R switch in the K3.

If using a KXV3 or KXV3A.
>   SO, for
> example, I use my SteppIR antenna for Tx and Rx on 6m, and the PR6 is in
> the path on Rx and out of the path on Tx.
>  

73,

Lyle KK7P
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[Bill W4ZV]

KK7P wrote

> Am I correct in gathering that the PR6 is a RECEIVE-ONLY preamp

yes

>  (i.e.
> that it can't be used with the same antenna/feed line as the TX? (vide
> p. 3 manual).
>  

no

It is in the receive path after the T/R switch in the K3.  SO, for
example, I use my SteppIR antenna for Tx and Rx on 6m, and the PR6 is in
the path on Rx and out of the path on Tx.

Just to clarify, I believe a KXV3/3A is required in addition to the PR6 for Lyle's description to work.  The PR6 is enabled by RX ANT (on 6m only) and switched out of the circuit when ANT1 or ANT2 is enabled on the HF bands.

[Jim Brown-10]

On Mon, 21 Jun 2010 13:02:20 -0400, John Ragle wrote:

>If so, I would be much more interested in a good low-noise GaAsFET
>antenna-mounted (weatherproof) preamp with T/R switching

That would be ARR.  I have one. It works well, BUT -- I had to send
it back three times because the GasFET blew due to TX power (and I
was running 100W). The last fix worked. Don't know what they did.

I'll echo what Bill, W5WVO said on the effect of the preamp. If you
live in a quiet location, it makes at least a 3dB difference in
hearing weak signals, maybe more. If you've got a lot of local
noise, all you'll do is amplify the noise. My QTH is pretty quiet in
most directions most of the time.

73, Jim K9YC


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