Re: Cheap HB dummy load


William Smith
 

I see the word “Photo “, but I do not see a photograph.

73, Willie N1JBJ

On Feb 14, 2022, at 1:07 PM, Jim Strohm <jim.strohm@...> wrote:

Photo ….


Sent from my quenched-gap spark transmitter.

On Feb 14, 2022, at 12:03 PM, Jim Strohm via groups.io <jim.strohm@...> wrote:

I mentioned this project a little while back.

It’s a “non-inductive” TO-220 50 ohm resistor and a heat sink. See photo.

I tested it on my MFJ-269C today. 49 ohms impedance, flat through HF, slowly creeping lower above 30, but usable to the limit of the meter at almost 500 MHz, SWR below 1.5:1.

Can’t get much better than that for $3 plus some junk.

73
Jim N6OTQ




Sent from my quenched-gap spark transmitter.







Join QRPLabs@groups.io to automatically receive all group messages.