My, how things have changed! In the mid 60's in SE Asia, in a mobile
troposcatter system [AN/MRC-98], we had 4 receivers that used Western
Electric 416B planar triodes with the amazing NF of 3.7 dB at 460 MHz.
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
On 7/1/2020 6:39 AM, Jim Miller wrote:
The PR6-10 was the latest released preamp as an accessory for the K3 prior
to the K3s with its built in preamp. They are likely very similar.
Here's the manual for the preamp:
https://ftp.elecraft.com/PR/Manuals%20Downloads/PR6-10%20Owners%20Manual%20Rev%20A.pdf
NF is claimed to be 0.7db typical.
73 and stay safe
jim ab3cv
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