[Elecraft] Incresing a wattmeter's sensitivity?
"D.R. Weiss KIØRP"
[email protected]
Sat Mar 23 20:58:01 2002
Yes, I would try increasing the turns of the secondary winding of this
transformer (the winding connected to the metering circuit). It sounds as
though the primary winding (the winding connected between RF input and RF
output) has one turn; I would leave that winding alone.
Dave Weiss KI0RP
At 07:56 PM 3/23/02 -0500, you wrote:
>Hi Folks,
>I have an old mfj 949B tuner that I would like to dedicate to my qrp gear.
>Problem is, the meter is very qro oriented, can't get it to peak when
>trying to "set" for swr test.
>I tweaked the trimmer cap on the meter board, and while this did help, I
>still need more "juice" to the meter. Presently the rf input has one wire
>passing through the "sensing" toroid. Would a couple turns through this
>toroid pick up more energy?
>Not really worried about numbers on meter being calibrated, just wanting
>relative measurements for swr.
>Thanks, Randy-AA1UN