2024-06-24 19:14:11



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Misc stuff


Icom R2500/PCR2500 modifications

Page: HW.R2500 - Last Modified : Mon, 21 Dec 09

Enabling SSB for >1.3GHz

This mod is very simple, just remove the diode. (note: the ugly clipped diodes are from factory!)

Discriminator output filter bypass

Both PKT9600 outputs have this filter that makes decoding of fast FSK data modes like ERMES very problematic.
Easy solution is to just bypass it with piece of wire.

Main RX IF tap point

This tap point is located inside main RX shielded box (right one) on top side of PCB. This means you don't need to remove entire board. I strongly recommend using buffer amplifier, because plugging IF directly to SDR with 50 ohm input attenuates radio significantly and produces extra load on IF curcuitry.

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