[Elecraft] [K3] Gain to KXV3 wideband IF output

Roger Dixon lists at irdixon.plus.com
Tue Jun 26 10:30:21 EDT 2012


Thanks Jack,
I was beginning to suspect the FET but you have put my mind at rest on that
one.

Roger - G4BVY

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Jack Smith
Sent: 26 June 2012 15:02
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] [K3] Gain to KXV3 wideband IF output

-18 dB transfer loss is typical of what I measure.

Solution involves making the mods to the FET follower and in most cases 
adding amplification between the IF output port and the Soft Rock input.

Jack K8ZOA

On 6/26/2012 9:25 AM, Roger Dixon wrote:
> I've finally completed my Soft Rock for use as a pan adapter.  However it
is
> rather deaf.
>
>   
>
> On investigation, my measured "gain" from the K3 antenna input to the KXV3
> IF output (terminated in 50 ohms) is -20dB.  Looking at the K3
block/circuit
> diagrams, this would appear to be on the low side.  Is this typical or do
I
> need to conduct an internal examination.
>
> {Note I have not done any of the mods to increase the gain}.
>
>   
>
> Roger - G4BVY
>
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