Hi Folks,
How can I fine tune QO100 Helix ? My SWR meter is limited to 525 Mhz, my nanoVNA-H4 goes only up to 1.5Ghz.
Is there any cheap trick or device available?
Thanks
Hi Folks,
How can I fine tune QO100 Helix ? My SWR meter is limited to 525 Mhz, my nanoVNA-H4 goes only up to 1.5Ghz.
Is there any cheap trick or device available?
Thanks
Here is a cheap one:
Hi,
you can use a directional coupler (eBay about € 15.-) and a crystal detector:
N-Typ HF-Koaxial-Richtkoppler, Weiblich, 200W, 800-2500 MHz, 5 DB ~ 40 DB, 50Ohm
Detlev
Get a Nano VNA V2. Works up to 3 GHz and costs about 50-60 EUR when ordering directly from China.
73 Jens HB9EKO
Thanks for the suggestions. I dont want to invest too much money for only one day measurement, so either I borrow one from a ham mate or I buy a dir.coupler !
73 DX Kornel