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28 Sep
2006
28 Sep
'06
4:43 p.m.
Using 30-in, gain = 24.1 dBi at 2401 MHz Using 48-in, gain = 29.2 dBi at 2401 MHz, gain = 23.7* dBi at 1268 MHz
- Note: The smaller dish is too small at 1268 MHz and the
larger dish may not produce this gain since it < 10 wavelength
in diam.
I can vouch for that. We just finished a lab where we used some of the little 1.2 and 2.4 GHz TV cameras as signal sources and then used a 24" DIRECT TV dishe to let the students measure the gain between a dipole and the dipole on the dish.
You are correct. There is no meaningful gain at 1.2 GHz. 2.4 GHz gain was striking. I'll wait to see their data before I commit to how much gain we got at 2.4 GHz.
Bob, WB4APR