RACAL TRA3900 Layout front panel +---------------------------------------+ VOLUME | Display | NET COMSEC +---------------------------------------+ |1 2 3 PWR FN | RF |4 5 6 MODE CALL | |7 8 9 PQ IC | ANT |TEST 0 Down Up Enter | AUDIO AUDIO +---------------------------------------+ Switch VOLUME for on/off volume Wait til "RADIO FAULT", push Enter "ZAL TAMPER" push Enter "INIT REQD" switch COMSEC on INIT push Entere When "ZEROISED" wait til "RADIO FAULT" and push Enter til "INIT REQD" Wait til "INIT DONE". This can take a while. Switch COMSEC to CLR. Radio is now ready for use. After switch off and later switch on, you can get the message "SWITCH OFF". Switch the radio than off and direct on. You get then "RADIO FAULT" push Enter, "ZALL TEMPER" Enter and the frequency is in the display. For frequency change set the VOLUME swith to SET while holding the little switch outside the case above the knob. In the display is "pd-------". Use the UP key til "NET CI>>" is displayed. Push Enter and Up. Now the frequency is displaed. After an Enter uou can enter the new frequency between 30 and 108 MHz. The knob NET is the channel selector for channels 1 to 8. Under SET there is a menu with configuration. Specs Frequency 30 .. 108 MHz 25 kHz step size Preset Chanels 8 Hopping All frequency, 4/16/256 user specified, 256 orthogonal Output Power 100 mW, 5 W, 20 W Power Supply 12 V or 24 V Squelch 150 Hz Environment -40 C .. +70 C, EMP protected Size 90 x 230 x 205 mm 4.4 kg Weight 6.1 kg with battery