This is a short tutorial to the Nokia/Mobira RB58/RC58/RD58 series user interface with the OH5NXO ham firmware, version 1.6 or older (all commands may not work in older versions). Authored by Kari Sarvala OH6MLD in 1998 Some minor modifications by Pentti Gronlund OH3BK 14 Feb 99 and 03 Apr 2000. The keys are refered according to the handsets that have the keys marked in the following way. On some markets the keys may be marked differently. The handset with a numerical display (CU53AN): [---DISPLAY---] <1> <2> <3> <4> <5> <6> <7> <8> <9> <*> <0> <#> is the small button on the top of the handset. The <+> and <-> keys are on the left side. The handset with an alphanumeric display (CU58AF): <1> <2> <3> <4> <5> <6> [--DISPLAY--] <7> <8> <9> <*> <0> <#> Numerical: Alpha: Display: Memory recall: 0...99 ENT 0...99 # 0 XXXXXX Memory up/down: 2, 5 (long) 2, 5 (long) Set frequency: 500 ENT 500 # X 51500 X 145500 X 433500 4500 ENT 4500 # X 54500 X 144500 X 434500 60500 ENT 60500 # X 60500 X 60500 X 60500 145450 ENT 145450 # X 145450 Frequency up/down: 3, 6 (long) 3, 6 (long) Repeater offset on/off RCL RCL Repeater-beep (1750Hz) PTT + button Repeater-beep * * FFSK paging XXXXX * XXXXX * CCIR paging XXXXX XXXXX DTMF tones PTT + numbers PTT + numbers Previous scanning STO STO Simplex+repeater channels 1 STO 1 STO Simplex channels 2 STO 2 STO Repeater channels 3 STO 3 STO Open memories 4 STO 4 STO Current 100 MHz (up) 7 STO 7 STO Current 100 MHz (down) 77 STO 77 STO Memories 90...99 8 STO 8 STO Utility channels 9 STO 9 STO (165/170 MHz police) Utility input channels 99 STO 99 STO Scanning stops with every button, except shift. The radio will return to the last busy channel detected. If you press STO long, the frequency is entered in a reject memory that stores the 10 last frequencies, and "reject" is shown on the display. The reject memory is cleared by pressing STO really long ("CleAred" is shown), or at power break. SQ opening (toggle) SHIFT SHIFT (or button in side of CU) Continuous pressing listens to the input of a repeater channel SQ threshold setting 1,4 (long) 1,4 (long) To get the squelch working properly in some firmvare versions you have to scroll the threshold setting so that it will overflow in the upper end (99) and start again from 00. Scroll further to the level where the squelch will close, now it will work right. ch spacing (C,D) 12.5 kHz 1024 # 1024 ENT X XXXXXX 25 kHz 0512 # 0512 ENT X XXXXXX (B) 10 kHz 1280 # 1280 ENT X XXXXXX Setup 9 # 9 ENT NNN XXX XXX (NNN = the current parameter, see below) Next parameter # ENT X XXXXXX Exit ENT # X XXXXXX rFc RX front end tuning voltage +/- 0 ... 255 Each MHz has an independent setting (XXX # or XXX ENT sets rfc directly for that MHz also in operating mode) tPc TX power level 0 ... 255 SqL Squelch threshold 0 ... 255 nEG negative repeater offset in kHz POS positive repeater offset in kHz 7 # will toggle nEG/POS XXX # to XXXXXXX # sets the offset bAtt Battery voltage 0 ... 255 AGE Time from clear (CL) HhMM id Radio ID (FFSK) CCCCC CCCCC#(ENT) sets new ID StEP channel spacing (see above) SS SoFt Software version VV Ph Caller ID (FFSK) CCCCCC Pt Called ID (FFSK) CCCCCC c Last received CCIR string Programming of memory displayed: Open 145400 ENT-- (1st tone acknowledges, 2nd 'programmed´) No scan 145400 ENT--- (- " - ,3rd noscan) Empty 145400 ENT---- (-"- ,4th deletes memory) Defaults (long press reads, really long sets, texts Default-Stored displayed): 7 Squelch 8 Memory channel 9 Frequency 0 Volume 8+ENT Default volume, SQ, PWR, memory RF power level setting (also when transmitting, with +/- buttons) Low (25%) 0 # 0 ENT Mid (50%) 1 # 1 ENT High (75%) 2 # 2 ENT Max (99%) 3 # 3 ENT 00-99% XX # XX ENT Upper displ. ALPHA Battery low ´Car´ Scanning PV SQ RS P Power in 10 % V Volume 0 ... 9 SQ SQ setting (B,C=SQ, D=RSSI) RS RSSI 00 ...99 Lower disp MM-FFFFFF MM Memory channel FFFFFF Frequency | Repeater shifts (on right corner) - no-scan-memory = empty-memory Remove all original EPROMs and program the right band version of the firmware on a 27C512 chip (only one is needed): b58p8x**.bin for RB58 (80 MHz) c58p8x**.bin for RC58 (160 MHz) d58p8x**.bin for RD58 (450 MHz) where ** is the firmware version. The files are binary images. On a P8N processor board (two 27C512 chips), the ham firmware chip has to be installed in the socket that is further from the edge. On a P8E board (a 27C512 chip and A 27C1000 chip) the smaller chip is right at the edge of the board. The firmware will work with the following combinations of processor boards and handsets: P8N CU53AN P8E CU53AN P8E CU58AF Note that the alphanumeric controller will only operate with the P8E board. The electronic deviation fine control is set in the middle. To set the modulation characteristics of the radio you have to adjust the trimmer pots on the audio board. They are accessible without removing the processor board: I-----------------------I I-----------------------------------------------I I I I handset connector I I I-----------------------I I I I I I I I I I I I P8N/P8E processor board I I I I I I I I I I I--------------------I I I I I I I-----------------------------------------------I R55 R25 R7 I--I R7 is the mic gain adjustment. Increasing the gain will increase clipping in the limiter and introduce more distortion in the signal. R25 is the maximum deviation adjustment. Increasing the deviation will increase the total modulation bandwidth of the signal. R55 is the CCIR/AFSK signalling deviation adjustment. In the R*58*** /E models that have 6,25 kHz offset from the ordinary channel spacing (e.g. the RC58SBG/E models for the UK 160 MHz JRC band) you have to tweak the synthesizer reference module to get back to 12,5/25 kHz channeling. Just adjust the trimmer capacitor through the hole on top of the TCXO module.