Is -15 dBm the full scale input voltage? What level are distortion products? The IF input levels for minimum power uplinks should be set so that ADC distortion products are in the noise.

73,

John KD6OZH

----- Original Message ----- From: "Howard Long" eagle@howardlong.com To: "'AMSAT Eagle'" eagle@amsat.org Sent: Wednesday, July 11, 2007 01:58 UTC Subject: [eagle] P3E SDX Design Levels

Folks

Following the Teamspeak meeting, the pertinent levels for P3E:

V Tx Phase +10dBm @ 145.895MHz into 50 ohm V Tx Envelope 2Vp-p into 1kOhm baseband U/V AGC I/O: 2V full gain, 5V full compression (output capable of ~2.5mA drive) U band IF in -15dBm @ 10.7MHz into 50 ohm L band IF in -15dBm @ 10.7MHz into 50 ohm S band IF out -15dBm @ 10.7MHz into 50 ohm

73, Howard G6LVB

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