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© 2010 Arctic Diamonds - TF4M
Stan, SF7WT visited TF4M and used the great rhombics for a couple of days. Unfortunately there was a solar disturbance during his visit causing a massive Aurora and very poor propagation.
Stan is the author of the books ‘Thanks to Amateur Radio’ and ‘Amateur Radio gives you 2 Million Friends‘.
One operating position is fully functional. The shack has 4 operating positions and each position can choose any available transmit antenna through a 100 kW Strip Line Matrix Switch remotely controlled.
The remaining tasks are to install panels at each operating position to plug in bandpass filters, install wiring for remote antenna switches and power combiners, install computers at positions C and D, wire up PTT control to the Strip Line Matrix switch (to prevent the possibility of hot-switching) and build an indicator panel for the switch.
I will now concentrate on the farm work until autumn before continuing with the project.
I have finished the Beverage antenna project for the time being.
I built 4 bi-directional Beverage antennas ranging from 170m to 380m long.
The antennas are connected into the radio shack via 5000 feet of RG-6 CATV cable entering via a patch panel and fed into a K9AY RAS8x2 matrix antenna switch which then feeds the 8 directions available into two transceivers.
The picture shows the center lines of the main lobe of each antenna direction. The lobes are quite broad especially on the lower frequencies, so I believe I have relatively good coverage.
