Output power 0.2W low distortion. Up to 0.5W at 1% distortion.
Maximum voltage
swing
5Vpp (1W into 8 ohms)
6.5Vpp into 300 ohms
Typical voltage swing
for 600 ohm aviation
headsets
1Vpp-2Vpp
Frequency response
audio power amplifier
200Hz to 20Khz at 8 ohms load, lower limit decreases with lower
loading (100uF output coupling capacitor)
Volume control range 32 steps of 3db each. Total control range = 96db.
Notes: V16 can be operated with RX and Intercom volume set as one or these can be spit
into separate volume controls. This depends on the corrected heads or control system.
In case of spit operations, the above table applies for both audio sources.
Audio, RX and TX filters
Microphone inputs Pilot and PAX 350-2900Hz, Butterworth 4 pole BP
TX modulator 25Khz 0-2900Hz, Butterworth 4 pole LP
TX modulator 8.33Khz 0-2400Hz, Butterworth 4 pole LP
AGC 0-5Hz, Bessel 4 pole LP, step response 0.1
second to 95% of final value.
RX audio 25Khz 200-2900Hz, Butterworth 4 pole BP
RX audio 8.33Khz 200-2400Hz, Butterworth 4 pole BP
Channel filter 25Khz 0-10500Hz, Butterworth 8 pole LP + 3 pole
R/C LP at ~15Khz
Channel filter 8.33Khz 0-3900Hz, Butterworth 8 pole LP + 3 pole
R/C LP at ~15Khz
RX anti aliasing 16Khz FIR > 60db stop band (adds to
channel filtering)
Sidetone audio filter 0-2900Hz, Butterworth 4 pole LP
Transmitter self protection
The transmitter is designed to derate output power if:
a) Temperature in the immediate surrounding of the output power transistor exceeds 90
degrees Celsius. Maximum temperature derating of power is 50% and this is reached at a
temperature of 100 degrees Celsius.
b) VSWR exceeds a value of 3.0. Power will be linearly reduced up to a maximum of 50%
reduction which is reached at a VSWR value of 5.0 (44% reflected power from antenna).
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