wiki/ WiFiAmplifiers

2.4GHz Bidirectional Amplifiers for 2.400 - 2.450 GHz

We finally settled on the YDI ampplifier below; they have very nice LNA's on the RX end and the folks at YDI were very helpdul. We picked up three: one for the ground, one for the rocket (which we removed from its case to save weight, which is not recommended) and one spare.

Note that the ARRL site has much better and more up-to-date information on bidirectional amplifiers ("BDA"s, according to the ARRL):

Here's some old (Summer 2001) the notes from our decision making:

Spec/Mod Teletronics SSB YDI Hyperlink
Price $412 $480 $412 $316
Rcvr Gain 17dB 14dB 18dB 10dB
Rcvr Noise 3.5dB < 1.5dB 3.5dB 3.5dB
Tmtr Gain 24dB gain 10dB (0.5W RF output) 16dB 1W (30dBm)
Tmtr Noise +/-1db over 2.4-2.5GHz (1dB compression = 1.4W) 900mW 1dB compression +/1dB over Freq. Unknown
Power in 9V @ 1.2A 13.8V (12V min) 11 to 14VDC @ 650ma (400ma avg) "12v"
Dim.s 4.5 x 3.0 x 1.2 5 x 2.75 x 4 4.42 x 2.40 x 1.22 4.6 x 2.6 x 1.7
Weight 0.6lb ~2lbs 1.5 lb. with U-bolts ~3lbs