Modifications

IC-410PRO Mic Connector AF output

An Icom IC-410PRO UHF transceiver is being interfaced to a Clear-Com intercom system via a TW-47.

I/O required between the IC-410PRO via it’s 8-pin RJ45 connector and the TW-47 are:

• Ground
• PTT
• Mic Ground
• Mic
• AF Out

In line with the dumbing down of society , there is no mention of microphone pin outs in either the IC-410PRO Basic Manual or the “Advanced” Manual, so attention turned to a compatible microphone, the Icom SM-26 for further information.… Read more...

5/16″ SMA Spanner Mods

Doug, VK4OE, shows us some handy modifications to a 5/16″ combination spanner to make it more user friendly when dealing with SMA connectors in tight spaces.

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FT-50R Battery Drain mod

ft50smallThe FT-50R will drain it’s battery rather quickly, even if the transceiver is turned “off”.

This mod will reduce the “off” current drain of the transceiver.

Note: Actual layout of PBA may vary depending on revision.
 
Abbreviated procedure;

  • Remove Battery & 2 knobs
  • Remove NiCad sticker
  • Remove 2 screws & remove keypad

 
ft50r-01

  • Lever up metal back plate (2 tabs either side) & remove from plastic shell
  • Undo & remove nut on Dial/Vol pot
  • Remove 3 screws
  • Carefully separate PBAs
  • Refer to overlay above
  • Replace R2102 with 56k 0603 SMT resistor
  • Replace R2103 with 10k 0603 SMT resistor
  • Re-assemble as per resverse of above

FT50 BATT DRAIN MODRead more...

Icom CR-293 High Stab Option

A look at the Icom CR-293 High Stability Oscillator option in an IC-910.

Easy to tweak, and the stability is very good.
You may not need to muck around with GPS Locking at all.

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