About me

My name is Alexandru Csete, also known as OZ9AEC. I am a physicist from the University of Aarhus and I work as a development engineer in the antenna department at Thrane & Thrane (Cobham Satcom). Before that I was 8 years in the European space industry working on the Automated Transfer Vehicle called Jules Verne and the Gaia scientific mission.

I have been the holder of a CEPT Cat. 1 amateur radio certificate since 1991. My primary interests today include satellite communications, software radios, digital voice and video, microwaves and developing free software for Unix-like operating systems.

My website is dedicated to my technological endeavors within the areas of amateur radio, free software and space hacking – all free and open source. You are free to use the information on this website under the terms and conditions of the Creative Commons Attribution-ShareAlike license. You are also welcome to use my photos, videos, etc – all I ask is that you link back to my site http://www.oz9aec.net/ or the specific article you are using. If that’s not good enough for you, contact me for an individual agreement.

You are welcome to leave comments on the article pages if you have anything relevant to say. Please note that I am not a helpdesk and I am not going to do anybody’s school assignment.

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PBT Mod for the IC-765

As you may already know, the IC-765 has IF-shift but no passband tuning. There is, however, a simple mod originally designed by Gerd Henjes, W2ISB, which allows the IF-shift button to tune the passband while the IF-shit button is in OFF position. This mod is described in the VE3HUR IC-765 notes and reproduced here with some illustrative pictures, as well as a video demonstrating the difference between PBT and IF-shift

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IC-765 Overview

The IC-765 has been ICOM’s flagship HF-radio for many years. Even today (2006) it represents excellent value for money as it has one of the best receivers ever made. The IC-765 has 4 IF stages (69MHz, 9MHz, 455kHz, 9MHz), built-in power supply (PS-35) and automatic antenna tuner (AT-150), and it comes with 500Hz CW filters (mounted from the factory. Optional 250Hz CW filters (FL101 and FL53A) are available, too, as is the optional FL102 6kHz AM filter.

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