Modifications for the Icom IC-2SE

23-01-1999 Additional functions of the ICOM IC-2SE English language
23-01-1999 Extended Icom IC-2SE functions English language
23-01-1999 Extending the Rx. coverage of the IC-2SE and IC-4SE English language

23-01-1999
Additional functions of the ICOM IC-2SE

'LIGHT' + '1' + switch on frequency input by keyboard requires only MHz and following digits (example : for 145.500,only "4500" has to be entered)

'LIGHT' + '2' + switch on frequency input by keyboard requires also the 10MHz digit (example : for 145.500, "45500" has to be entered)

'LIGHT' + '2' + switch on full frequency has to be entered (example : for 145500, "145500" has to be entered) 'LIGHT' + 'D' + switch on Display test

Receiver covers approx. 75 to 370MHz. Frequency can be entered from 0 to 1310MHz. Normal sensitivity can only be expected between 110 and 180MHz.
Between 108 and 130MHz, AM can be received. So far no method has been found to switch AM/FM manually. Broadband FM for broadcast stations between 87 and 108MHz is not possible (sensitivity is very low in this range).

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23-01-1999
Extended Icom IC-2SE functions

'LIGHT+FUNC'    & SWITCH ON:  Display test


'LIGHT+FUNC+V/M & SWITCH ON:  Extended frequency range, 0 - 1310MHz,
                              enters multi function mode with new PT
                              status 'bA' for receive only, see PTT
                              function table below for detailed operation.
                              Tuning steps above 204MHz only 12.5KHz or
                              25KHz (channel number indicator changes from
                              U to last ch. no.??)

'LIGHT+FUNC+C'  & SWITCH ON:  Changes PT from 'bA' to 'P' and enters multi
                              function mode.
PTT function table
PT status                  P                   PL                  bA

Simple Mode:
~~~~~~~~~~~
               (-      TX, 144-146          TX, 144-146 (*)      TX, 144-146
P   - selects -(       'o.FF' other         'o.FF' other         'o.FF' other
               (-           ---                 ---                  ---

F&P - selects               pwr               low beep@             pwr

Multi Mode:
~~~~~~~~~~
               (-      TX, 144-146            low beep,          high beep,
P   - selects -(
               (-           ---               frequency          100MHz steps

F&P - selects               pwr               low beep           AM/FM toggle
Notes:
P stands for pushing the PTT switch, table shows in 2nd row also the result of simultaneous rotation of the tuning control, --- = no reaction.

F&P stands for pushing FUNC,PTT; pwr stands for low/high toggle and for stepping by tuning control, ref. to Instruction Manual.

- PT status selection via SET/PRIVATE mode, ref. to Instruction Manual.

- PT status 'bA's only available for extended frequency range (after execution of 'LIGHT+FUNC+V/M' & SWITCH ON), memory contents remain unchanged (approx. working range of ext. band is 75...365MHz).

- Amateur frequency range can only be recovered by 'RESET', => 'LIGHT+MON' & SWITCH ON, all memory contents will be lost!

(*) THIS OPERATION IS NOT IN ACCORDANCE WITH INSTRUCTION MANUAL, P. 30 - PL SHOULD LOCK PTT (TX DISABLED) ALSO IN SILE MODE!

Information was gleaned from many sources including DL8AAR, PA3FDA

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23-01-1999
Extending the Rx. coverage of the IC-2SE and IC-4SE

It is possible to extend the receiver coverage of both of the above radios without removing the covers!

With the radio turned off, but beep enabled, hold down LAMP, FUNC and V/M buttons while simultaneously turning on the radio. Keep all 3 buttons pressed. The display will fill up with all sections on, then there will be a beep, a longish gap and another beep. Once the second beep is over, release the buttons.
Lo and behold, you now have coverage of any freq from 0 to 1300 MHz, except, of course, that the VCO cannot cover the entire range. For example, the 4SE will cover approximately 380 to 480Mhz plus 805 to about 930MHz.

Information originated from G8SEZ

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