[Elecraft] KBPF3 usefulness or effectiveness?

[drewko]

FWIW, mine switches in at 7410 KHz, increasing the signal by 7 or 8
dB. I compared the background noise level below and above 7410 using
the K3's internal dBV function, with AGC off.

73,
Drew
AF2Z





On Mon, 28 Dec 2009 11:26:04 -0500, Guy. wrote:

>If the AGC is being used, any difference would be seen in the S-meter,
>not the AF output, unless you live in an extremely quiet location and
>you're trying to copy 40m BC during the day.
>
>My KBPF3 switches in at 7.385. If you turn the AF gains to minimum in
>a quiet room, you will hear the relay kick in/out the KBPF3 as you
>tune across the switch-in points. Mine switches before the ham band
>filter adds any noticeable loss, as there is no sudden change in any
>level.  Very smooth.
>
>Were you having trouble hearing a station or just curious about the
>way it operates?
>
>73, Guy.
>