Sorry for the delay guys, but here it is. 1. Backup all frequencies in the R2 using Goran's software, or equivalent program, as the memory will be totally erased during adjustment. Display show "CL OUT" and the signal strenght bar will indicate how the data transfer progresses as you do the backup. Check the first and last channel on the PC screen so that it will correspond with those in the R2. The verified file can then be saved to disk for future use. Make another reading of the R2, just to be safe, and save under a different name and location if you later should accidentally overwrite the first file. 2. Do a test and try to load the saved file and then write it to the R2. The display should show "CL IN" and no errors must be reported from the program. The hardware and software are then working as expected and we can continue with service mode. * If you don't clear this step, don't proceed. * 3. Do a total reset by keeping FUNC+BAND+V/M pressed while powering on. Display should show "CLEAR". 4.Put a 68k resistor between data signal and ground. That's ring and ground on a 3,5mm stereo plug that you plug into the speaker jack. The resistor can be anything from 39k to 100k. 5. Power on while holding the FUNC button pressed. The display should show a frequency and the text "FR" at lower right. FR = Frequency Reference. If you don't see the "FR", then you're not in service mode and should check the resistor, plug and keypresses. Remove the 3,5mm plug when the R2 is successfully in service mode, and insert your normal programming plug and cable. 6. Read the R2 with the software program and enter a suitable frequency to Bank 1 (not Bank0) Memory 00.(1-0 in Goran's program, not 0-0) Save the file to disk with the filename "adjust" or something similar. You have to select a frequency where you have a steady signal, preferable with some constant modulation like a data signal. A calibrated RF signal generator is the best thing to use, but a known accurate transmitter site could also be used. 7. The R2 will have gone out of service mode from the read operation. Do step 4 and 5 again. 9. Write the "adjust" file to the R2 and then switch the R2 off and then on to enter adjustment mode. 10.Turning the dial will display an adjustment marker in the display that will move left or right as you tune the frequency. Set the squelch to "OPEN" while doing this.Listen to the signal and turn the dial back and forth to find the edges where the signal will sound distorted. Set the dial and/or marker in the middle of these edges. This is easier to do with a weaker signal than with a stronger one and it will also help with a very high modulated signal. With an RF signal generator you could aid the adjustment by over modulating some 20-40%. 11. Store the setting and go to normal mode by switching off R2 and then hold FUNC+V/M pressed while powering on. 12. Write back your backup file to the R2. Adjustment completed. Sensitivity adjustments follows in part 2. Some R2's seem to be spot on, and others is way off in frequency, so the result may vary, but it shouldn't be any worse than before the adjustment. Now go out and hunt down those normally hard to copy signals with your "new", perfectly tuned, R2. Ubbe. P.S. I can mention that I have some problem with the Goran Vlaski software and my R2, as Goran's program writes 900Mhz frequencies detuned 2,5KHz from the actual value. After I tuned 934.0125MHz with a signal generator, all other bands where detuned 2,5Hkz when going to normal user mode. If I tuned to 468.000Mhz, everything was spot on, even 934.0125MHz. If you have an Optocom or OS456/535 board, you can make a cable with a 3,5mm mono plug at one end, and a 3,5mm stereo plug at the other and use as a programming cable after plugging it into the ci-5 jack of the opto. Connect to the ring and ground of the stereo plug and plug into the loudspeaker jack of the R2. You can also adjust the sensitivity of the R2. Use Bank 1 - 01 for VHF (140-170MHz) and 1 - 02 for UHF (410-460MHz). It is not possible to enter tune frequencies into memory manually. You have to upload them using software while in service mode. Follow the steps as in the instruction for frequency adjustment, but before doing step 10, press BAND or FUNC to step until your selected frequency that you uploaded are displayed. The display will also show "tk" together with the sensitivity adjustment frequency. Turn the dial for the best sensitivity. Apply the steps and instruction as for the frequency adjustment to properly tune and store the result. No need to store values when switching between frequencies. Both values will be stored when exiting service mode. Try to use a non-fading signal or an RF signal generator when doing the adjustment. It otherwise becomes difficult to find the point of absolute maximum sensitivity. You can also calibrate the signal strength meter with the other "RS" channels, but are extremely hard to do without proper RF instrumentation, and must be regarded as nearly impossible to do as a novice. Ubbe.
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