CDR-3250/80 TECHNICAL MANUAL
Issue 2.2
1-3
Table 1-1 CDR-3250/80 Specifications-Cont.
Item
Specification
GAIN CONTROL
Automatic (AGC) or Manual (MGC)
AGC
Dynamic Range
Output held within 1 dB over a 110 dB range
AGC Threshold
-112 dBm (Output level -3 dB with respect to a -60 dBm signal)
AGC Attack Time
(SSB & CW)
Automatically selected
Fast
< 2 ms for 50 dB change (sweep/scan only)
Normal
< 10 ms for 50 dB change (product detector modes)
AGC Decay Time
20 ms to 4 seconds nominal for 50 dB change
AGC for AM or FM mode
Carrier derived average detection with 50 ms response time for 50 dB change
MGC
Control Range
0 to 127.5 dB (nominal) gain reduction in 0.5 dB steps.
IF SECTION
1st IF
40.456 MHz. Standard Filter BW = 22.5 kHz
2nd IF
456 kHz. Standard Filter BW = 30 kHz
3rd IF
(cont)
24 kHz, Lowpass filter @ 80 kHz
Courtesy of http://BlackRadios.terryo.org
