Operations Manual

RF Technology R50 Page 23
7 SPECIFICATIONS
7.4.1 Power Requirements
7.4 Electrical Specifications
7.4.1 Power Requirements
Operating Voltage - 16 to 32 Vdc
Current Drain - 0.5A Maximum
Polarity - Negative Ground
7.4.2 Frequency Range and Channel Spacing
The R50, as a single model, covers the full band, currently the R50 receiver works in
20KHz and 25KHz channel spacing. It can also work in as low as 6.25KHz channel
spacing if the narrow band-width IF filter is used.
7.4.3 Frequency Synthesizer Step Size
The specified frequency can be any multiple of 1250Hz.
7.4.4 Frequency Stability
±5 PPM over 0 to +60 C, standard for 25KHz and 20KHz channel spacing
7.4.5 Number of Channels
100, numbered 00 - 99
7.4.6 RF Input Impedance
50W
7.4.7 IF Frequencies
1st IF frequency 246MHz
2nd IF frequency 21.4MHZ
3rd IF frequency 455KHz