Antenna Analyser

This has now come to the END. The Analyser is checked and compared to a RIG-EXPERT Analyser. We measured antennas from 160m to 6m and there is no difference in the WSVR result compared to each other.  It’s the first time I do a measuring instrument from scratch. There is some decisions to do to get it accurate enough. It is also possible to export the sweep to a mobile phone to store the result as a documentation of the measured antenna. The CPU memory is used to 96% the IDE report! All settings is done from the encoder.

When measuring antenna and demonstration of the analyser its good to have different known loads as 50 ohm, 100 ohm and a simulated 80m antenna. See below picture.

Transverter 1296 MHz

All boards is no in the final box, The first QSO was from my QTH to JO78FM a distance of 77,1 km. Output is around 2W, Antenna DL6WU 37 el homemade Yagi 23m up in the tower.  Report  59.

I try an IF attenuator with pin diode and attenuators, but I was not satisfied with the result, so I made a small board with attenuators and relays. Its adjusted for my transceiver Kenwood TS-2000 with 5W output power.  But can be simply changed.

I also try a relay I think it was CX120.. but it was not ok for 1296 Mhz frequency. I by some from Ebay, Omron and MATSUSHITA RK1-12V, that solves the relay problem.

I has start planning for a PA to connect to this transverter, stay tuned!

It is possible to lock the VCXO 96 MHz to a reference frequency, not implemented yet. I must build a reference unit first. 

Haven’t you lock at W1GHZ its time to do that, grate inspire.

Here is how I made IF-Board and SM-Board.