开云体育

On Monday, November 11,? 2019, 05:39:19 PM GMT+2, Barry Jackson via Groups.Io <g4mkt@...> wrote:


On 11/11/2019 15:13, Andy via Groups.Io wrote:

1Hz, wow, that's pretty cool.
I won't write off an upgrade in the future then.
73 de Andy

No don't, I found it really useful for checking an ADS-B RX antenna at
1090MHz. (jpole with 1/4-3/4 wave balun and shorted 1/4 wave stub filter
for rtl-sdr dongle))

See attached.

That output was with the antenna un-tweaked after building from nec2c
dimensions - very impressed with the results.

Cheers,
Barry
G4MKT