Check the performance of your designs against average numbers computed by this Online Calculator
Find 144 MHz charts below the calculator and 432 MHz chart at end of website.
Top G/T I have defined as average numbers plus 0.2 dB which is an arbitrary number of coarse.
- All numbers are for 4 Yagi Bays -
Lets not forget that even a tiny advantage in G/T like 0.05 dB may mean little without reflecting on the
- BAND WIDTH -
of the compared antennas. For that design properties have to be realised on a real world build in first place.
plus a few own entries: GTV2-8w+8n+9n+10LT+12n, G0KSC 8+9+10+12+14-ZB
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Gain is gain! ... an important paramenter on 144 MHz ... as long as the Antenna Temperature is low enough!
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The Antenna Temperature Chart can be quite deceiving,
as low T_ant without gain is easily achieved and means nothing without gain.
The primary function of this image is to show how the average data are derived.
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432 MHz G/T Chart
