For those interested in a Do-It-Yourself project that supports
Band-Drive or Frequency-Driven antenna control, the freeware program
FreqEZ runs as a Windows Console that connects via ethernet or WiFi to a
Raspberry Pi Controller and antenna selector.
In Frequency-Driven mode, you define up-to 50 frequency segments that
control any combination of 16 output relays. For example, if you use
four narrow-bandwidth verticals to cover the entirety of the 75/80 meter
band, you would configure FreqEZ to engage the preferred relay(s) in
each of four frequency ranges. All configuration and definitions are
done in software - no switches/jumpers/diodes/solder bridges.
Communication is done with UDP and TCP packets - no messy serial ports.
You can read more about FreqEZ here:
http://hamprojects.info/freqez/
Or watch a short video here:
http://hamprojects.info/wp-content/HamProjects/FreqEZ/FreqEZ%20Overview_Video.mp4?_t=1540736190
-larry (K8UT)
------ Original Message ------
From: "VE6WZ_Steve" <ve6wz@shaw.ca>
To: "Topband" <topband@contesting.com>
Sent: 2019-02-26 14:37:24
Subject: Topband: Frequency Dependant Remote antenna switching
After posting my video link about TX and RX direction switching, I have
received some emails asking about how I switch my various transmit antennas.
This morning I built another video that describes my frequency dependant
switching system that uses the Station Master band decoder.
What might be unique about the system I use is the requirement to switch
multiple frequency segments within each band in order to deal with some of my
narrow bandwidth antennas. I require more than just band switching.
I discuss the capabilities of the unit, how it is programmed and how I have
distributed the control lines to the various antennas.
Perhaps this might give some ideas to others with complex antenna switching
requirements or those planning a remote.
https://youtu.be/n2yR4AU0lkA <https://youtu.be/n2yR4AU0lkA>
73, de steve ve6wz
_________________
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
_________________
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
|