Advanced Microwave,
Model: SRRDLA21802

Features: Fast Response Time 
 Extremely Small Size 
 Superb Sensitivity and Wide Dynamic Range 
 Unique Residual, AM Noise Reduction 
 Rugged Construction, Space Technology 
Applications: EW, ELINT, Receivers 
 DF, Receivers 
 ESM Systems 
 Anti Jamming Radar Detection 
 Jamming Detection 

Outline Drawing

  Specifications APP Note:111
Frequency Range 2 - 18 GHz

Designed to meet the following Environmental Conditions:

Operating Case Temp.:   -40 to +85°C

Storage Temp.:      -54 to +105°C

Mechanical Shock:
Per MIL-STD-810F, Method 516.5

Per MIL-STD-810F, Method 514.5

Per MIL-STD-810F, Method 507.4

Mechanical: SMA Connectors

Altitude: Per MIL-STD-202, Method 105,Cond. C
Except @ 60,000 Ft.

Weight:  3.5 oz. Volume:  0.95 cu in.

Material: S303

Finish:  Gold Plating per MIL-G-452041

Control Pins:

J1: Ground

J2: TTL input. Controls Dynamic Range externally

*TTL1: -60 to +10 dBm
*TTL0: -75 to -5 dBm
*No connection or high impedance >10K ohm will be automatic.

J3: Analog output which determines the signalstrength of stray cw signal.

J4: TTL output: Determines in what dynamic range the unit is operating.

*TTL1: -60 to +10 dBm
*TTL0: -75 to -10 dBm

-Normally, the unit is in high sensitivity mode (-75 to -5dBm).
-At the presence of a high level stray cw signal, the unit automatically switches to (-60 to +10 dBm) within 50 nsec, unless it is overridden by external TTL Control (J2).

Dynamic Range:
Mode TTL1
Mode TTL2

-60 to +10 dBm
-75 to -5 dBm

TSS -78 dBm max.
Input VSWR 2.0:1 max.
Rise Time 12 nsec. typ.,
18 nsec.max.
Fall Time 15 nsec. typ.,
30 nsec.max.
Recovery Time 120 nsec. max.
Propagation Delay 15 nsec. max.
Log Accuracy ±2.0 dB max.
(±2.5 dB w. temp)
Video Output Drift over temp and dynamic range -0.05 dB/°C nom
Log Slope
(into 100 ohm load)  
50±4 mV/dB (1)
Power Supply
Operates ±12V to ± 15V
+12V at 450mA max.
-12V at 140mA max.
DC Offset +100 ±100 mV (2)
Pulse Response 30 nsec. to 100 µsec.(3)
Flatness ±2.5 dB max.
Droop (>TSS + 10 dB) <1 dB
CW Attack Time 3.0 mSec. typ.
Maximum Input Level +20 dBm

Other options also available: 1) lower sensitivity at the cost of video bandwidth, 2) slope other than 50mV/dB, 3) narrower RF Bandwidth with the advantage of better accuracy. 4) other environmental requirements.

Phone: 408.739.4214  -  Fax: 408.739.4148  -  Email: