Modifications for the Icom IC-910

Picture(s) of Icom - IC-910

27-05-2001 Expanded functions for the IC-910H (All versions) English language
22-07-2001 IC-910H mods English language

27-05-2001
Expanded functions for the IC-910H (All versions)
Author: SM4RNA Anders Janis - sm4rna@telia.com


Backside of the Displayborad looks something like below:

+------------------------------------------------------------------------------+
|   +----+                                                                     |
|   | r d |                                                                    |
|   | r d |                                                                    |
|   | r d |                                                                    |
|   | r d |                                                                    |
|   +----+                                                                     |
|                +---------+                                                +--+
|                | VFO     |                                                |
|                | ENC-    |                                            +---+
|                | ODER    |                                            |
|                |         |                                            +---+
|                +---------+                                                |
|                                                                           |
|                                                                           |
+---------------------------------------------------------------------------+

Top left is vertikal row with resistors be seen.

Beside the resistors to the right a vertical row with diodes is located.

From top is the diodes called D1, D2, D3, HD4, D5, D6, D7, HD8.

  • To enable RX 136-174MHz Remove D5.

  • To enable RX 420-480MHz Remove D6.

  • To enable RX 1240-1320MHz Remove D7.

  • To enable narrow FM on 1,2GHz band install a 1SS355 diode at HD8.

  • TO enable crossbandrepeater install HD4

To use crossbandrepeater:

  1. Activate [LOCK]

  2. Switch off the radio.

  3. Puch and hold M/S while switch on the radio.

To exit push [LOCK]

(Crossbandrepeat will not be canceled if power is switched off.)

This modification is read 737 times.

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22-07-2001
IC-910H mods
Author: Unknow


To modify your rig for:

  • TX-144 remove R188 (1k) on the display board. 136-174 MHz

  • TX-430 remove R187 (1k) on the display board. 420-480 MHz

  • TX-1200 remove R186 (1k) on the display board. 1240-1320 MHz

Narrow FM mode for 1200MHz install HD8 1SS355 on the display board.
You do not have to reset the CPU.

This modification is read 1486 times.

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