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-
- FT2700 freq coverage
- ====================
-
- To dismantle the rig follow the instructions for the fitting of the speech
- module except for the front panel. This should be pivoted upwards on the
- upper pair of countersunk side screws, this will separate the front panel
- away from the wiring harness.
- Unscrew and lay back the small switch panel and this will reveal the control
- unit PCB on which the two VLSICs (Q4001 and Q4002) are located.
-
- UHF Options
- Just below the lefthand chip (Q4002 - HD44750FM) there are 3 diode positions
- D4103-D4105. These are marked BJU0 BJU1 BJU2 on the circuit diagram but only
- the two diodes D4103-D4104 are fitted. By using all 3 positions, eight
- options are available.
-
- MODE DIODE CALL2MHz SHIFTMHz STEPKHz BANDMHz
- D401-
- 5 4 3
- 0 0 0 0 UHF INHIBIT
- 1 0 0 1 435.0 +/-5 25/12.5 440-450
- 2 0 1 0 435.0 +/-5 25/12.5 430-450
- 3 0 1 1 433.4 +/-1.6 25/12.5 430-440
- 4 1 0 0 433.4 +/-7.6 25/12.5 430-440
- 5 1 0 1 435.0 +/-5 25-12.5 430-440
- 6 1 1 0 433.0 +/-5 20-10 430-440
- 7 1 1 1 433.0 +/-5 10/5 430-450
-
- VHF options
- Just below and underneath the two ICs (Q4001 Q4002) are the fitting holes for
- D4009, D4010, D4011 and D4012 and again only two are fitted (D4009, D4012).
- These are marked BSV0 BSV1 BSV2 and BSV3 on the circuit diagram. Sixteen
- options are available.
-
- MODE DIODE CALL2MHz SHIFT STEP BAND
- D40- +/-600KHZ KHZ MHZ
- 12 11 10 9
- 0 0 0 0 0 VHF INHIBIT
- 1 0 0 0 1 151.6 N 0 0
- 2 0 0 1 0 151.6 N 0 0
- 3 0 0 1 1 151.6 N 0 0
- 4 0 1 0 0 151.6 N 0 0
- 5 0 1 0 1 145.0 Y 10/5 144-146
- 6 0 1 1 0 147.0 Y 10/5 144-154
- 7 0 1 1 1 147.0 Y 10/5 144-148
- 8 1 0 0 0 147.0 Y 10/5 140-150
- 9 1 0 0 1 145.0 Y 25/12.5 144-146
- 10 1 0 1 0 147.0 Y 25/12.5 144-148
- 11 1 0 1 1 147.0 Y 25/12.5 140-150
- 12 1 1 0 0 147.0 Y 25/12.5 144-154
- 13 1 1 0 1 145.0 Y 20/10 144-154
- 14 1 1 1 0 145.0 Y 20/10 144-146
- 15 1 1 1 1 145.0 Y 20/10 144-154
-
- HOPE THIS IS OF HELP TO YOU ALL.
- INFO FROM KRIS G8AUU
- JULIAN G6LOH.
-
-