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Roger, Thanks for confirming my suspicion...I guess this also implies that the WSPR spot counts/pattern might also be different between the two configurations, since the shield/chassis would be

Bruce, Your plots will be different because the common mode current (and therefore feedline radiation) will be different. Your friend is using a transformer as a voltage balun. With a good current

(forgot to attach these two SWR plots to the previous post)

A ham friend has an unusual indoor antenna that he uses with a Zachtek WSPR transmitter. He gets lots of spots from the 200mW transmitter (>500 unique band/spotter combinations in 24 hours), and the

Nico, After reviewing the data sheet that you posted earlier I see that Linx does offer customer support for this antenna. They state that they can supply PCB layout files and recommend matching

This is what it looks like when I reset the calibration.

Can you send an uncalibrated image?

I confirmed that short/open/load standards are measuring as they should at the terminals on the pcb board.

I bought the unit from R&L on Oct. 31, 2024. I did an ohm reading between blocking capacitor on the circuit side CH0 port terminal and ground, as described in this blog post

If you buy from RANDL, we can provide you with after-sales service. But since we have discontinued the SAA2N for a long time, RANDL may not have the stock to replace it for you. This is usually caused

The make up is one thing were the clones come in is the software and firmware that you cant make work or upgrade. ________________________________ Sent: Sunday, March 16, 2025 6:29 PM To:

they claim ALL (except their own) as clones ... but they are all "brothers and sisters", cousins ..? ... etc etc they all are made quite similar in circuit design dg9bfc sigi Am 15.03.2025 um

maybe the case is pressing on the touch screen? ... or the screen cable is not well fitted did you try to connect it to pc (example nanovna app)?? dg9bfc sigi Am 16.03.2025 um 23:31 schrieb

Sorry, it is indeed -H; but not '4' I'll try with differeny connection - thanks!

Battery is fine, 3.7VDC; checked at the unit PCB. And the screen is lighting up (white), so power isw not the problem

If I get you correctly, that is the "skin" current that gets radiated from the antenna as pure RF ? If so, that remaining common mode current is reflected back at the source and then "recombine" at

@Roger And @Dave, If I get you correctly, that is the "skin" current that gets radiated from the antenna as pure RF ? If so, that remaining common mode current is reflected back at the source and

This will download the updated S-parameter plotting program: https://tinyurl.com/bd8fde5t I was surprised to discover that the final Touchstone 1.1 file specification provides for multiple,

Thanks Brian, That link worked OK 73, Geoff

I seem to have gotten everything working. The plots show a 280 kHz Murata ceramic filter with an 82 pF load on its output. The dB and group delay curves are similar to those published by Murata for a