Rig Expert 55 Zoom - calibration

[crc4]

Has anyone made the calibration attachments - Open, Short, and Load - for the Rig Expert AA-55 Zoom?

There's a Youtube video, that describes the process, but I'm wondering if anyone else has done this.

If not, are there reasonably priced calibration kits for the Rig?

Rig Expert Calibration Kit YouTube video.

 

[W4AXW]

Yes, I calibrate my AA-55 most times I use it to eliminate the coax in the results, as I check my antennas after they're up.

If you don't want buy a calibration set, just take three S0-239 bulkheads, do nothing to one, short the center to the shield on the second, solder a 50ohm resistor across the center and shield on the third. Easy peasy.

7 3

 

[devicelab]

You can buy a 50ohm load from minicircuits (KARN-50CN+) that is pretty good up to higher frequencies.

I got lucky a several years back and found a HP908 LOAD and the matching SHORT/OPEN HP85032-60011 (these are N connectors.) I use them for my AA-1400 RigExpert and my VNAs. These are overkill for most users.

You can certainly do what W4AXW suggested and make your own SOLT kit. The minicircuits load was < $50 though, and I believe is rated up to around 6 Ghz.

 

[crc4]

Thanks for the information. I have several SO 239 that I think I give a try on soldering. I have 50 ohm resistors and have watched the video several times to see what's needed. It appears to be a simple project overall with little downside.