[Elecraft] Re: K3 6m pre-amp

[John Klewer]

Note that I installed this preamplifier in the RX IN/OUT path on the K3 
rear panel




> To enhance the 6 meter performance of my K3 I built the U310 
> preamplifier as described on N6CA's website:
>
> http://www.ham-radio.com/n6ca/50MHz/50appnotes/U310.html
>
> Tuned up on an HP8970A noise figure meter it gives 11.2 dB gain and 
> NF=1.3 dB.
>
> The receiver's performance on weak signals was significantly improved. 
> I already had the parts but cost should not exceed $30.00 to duplicate 
> this preamp....hard to beat.
>
> I have not done measurements on the radio/preamp combination to 
> determine any negative effect on the receiver performance but the K3, 
> which always performed well in the presence of strong signals, 
> continues to do so.
>
>
> John, N6AX
>
> K3 #567
>