Wanted: Icom IC-T8A MARS/CAP Mod

Wanted: Icom IC-T8A MARS/CAP Mod

Post by Jeffre » Thu, 29 Apr 1999 04:00:00

Anybody have a detailed mars/cap mod for an Icom T8A?  The only mods I've
been able to find are the keyboard BAND-SQL-Power up extended receive mod,
and a brief mention of a 'remove D54 to extend VHF & UHF' thing... however,
this radio doesn't have the configuraiton diodes labeled on the board as far
as I can see...

Any ideas?

Jeffrey

 
 
 

Wanted: Icom IC-T8A MARS/CAP Mod

Post by Jeffre » Fri, 30 Apr 1999 04:00:00


Quote:> Anybody have a detailed mars/cap mod for an Icom T8A?  The only mods I've
> been able to find are the keyboard BAND-SQL-Power up extended receive mod,
> and a brief mention of a 'remove D54 to extend VHF & UHF' thing...
however,
> this radio doesn't have the configuraiton diodes labeled on the board as
far
> as I can see...

Here's the mods I have... but I still don't know where D54 (Out-of-band TX
for VHF & UHF) and D61 (out-of-band TX for 50mhz) are...

Anybody know where to look on the boards?

Thanks,

Jeffrey

ICOM IC-T8A MODS

* Expansion for receive
Push and hold BAND and SOL keys while turning POWER is on.

After Expansion, the following approximate
frequencies and Modes become available:
50 -  75.99 Mhz            NBF
76 - 107.99 Mhz            WFM
108 - 135.99 Mhz           AM
136 - 174    Mhz           NFM
174 - 229.99 Mhz           FM
(222 doesn't receive well at all!)
300 - 399.99 Mhz           AM
400 - 599.98 Mhz           NFM
600 - 824    Mhz           NFM
848 - 869    Mhz           NFM
894 - 999.99 Mhz           NFM

* Expansion for transmit:
- remove the battery and antenna
- remove the 2 black screws below the battery contacts
- remove the nut that holds the antenna jack in place
(snap ring pliers or hemostats work well)

Remove D54 on the LOGIC boards expand VHF and UHF bands
137-229 mhz high band
350-500 mhz uhf band
(where the heck is D54?)

Remove D61 on the LOGIC board to expand 50 MHz band
50-65 mhz low band
(where the heck is D61?)

 
 
 

Wanted: Icom IC-T8A MARS/CAP Mod

Post by Vlaski Gor » Sat, 01 May 1999 04:00:00

Jeffrey schrieb:

Quote:> Remove D54 on the LOGIC boards expand VHF and UHF bands
> 137-229 mhz high band
> 350-500 mhz uhf band
> (where the heck is D54?)

> Remove D61 on the LOGIC board to expand 50 MHz band
> 50-65 mhz low band
> (where the heck is D61?)

Goto: http://ifip.com/icom-t8ainfo.htm

it's all there ...

and it was everything on the newsgroup a long time ago, you
can find it with dejanews ... with some other options also,
like the meaning of most of the other diodes ...

--
---------------------------------------------

http://vlaski.virtualave.net/
http://www2.crosswinds.net/frankfurt/~vlaski/
---------------------------------------------

 
 
 

Wanted: Icom IC-T8A MARS/CAP Mod

Post by Jeffre » Sat, 01 May 1999 04:00:00

Much appreciated;  that did the trick!

Interesting to note, though, that D54 actually appears to be a transistor...

Thanks again,

JL


> Jeffrey schrieb:
> > Remove D54 on the LOGIC boards expand VHF and UHF bands
> > 137-229 mhz high band
> > 350-500 mhz uhf band
> > (where the heck is D54?)

> > Remove D61 on the LOGIC board to expand 50 MHz band
> > 50-65 mhz low band
> > (where the heck is D61?)

> Goto: http://ifip.com/icom-t8ainfo.htm

> it's all there ...

> and it was everything on the newsgroup a long time ago, you
> can find it with dejanews ... with some other options also,
> like the meaning of most of the other diodes ...

> --
> ---------------------------------------------

> http://vlaski.virtualave.net/
> http://www2.crosswinds.net/frankfurt/~vlaski/
> ---------------------------------------------