Ok, people keep asking me how, so I finally resolved to overcome my laziness and to post this file once for all. As with the preceding ones, standard disclaimers, I take no responsibility, I like to hear comments, etc. I've been reported that this works with pocsag and symilar decoders, anyway (There is not much where you can fail in soldering one wire on a pcb). So: ************************************************************************** * Direct (unfiltered) FM discriminator out for the AR3000/A scanner * ************************************************************************** Several firmas offer this mod routinely, and it is not difficult. AOR-UK gives instruction for doing it yourself. They reccommend to bring the signal to pin 1 of the backpanel DIN connector; I think that should be standard. -> pinning of the din is: 2 4 5 1 8 3 6 7 The discriminator out is found on pin 9 of IC1 of the main/if/af board (the lowermost of the scanner). It carries an unfiltered output in N/WFM modes, I'm not sure if it gives still a (bandwidth limited) NFM when the scanner is in other receiving modes. All the mod is to solder a piece of wire from that pin to the DIN8. For extra protection, I added a 0.2 uF capacitor inbetween. The IC is easily identifiable once the board is unscrewed and turned upside down. There are few smd ics on that side of the board; IC1 is the only '3357' and is located more or less on the opposite side of C70 - L28 - L29 - X4 etc. If you're too lazy to unscrew the board, as I was, the signal track is also available on the upper side. Here is how to find it: /---\ / VR3 \ \ / \---/ ..........._, : XF2 : # : : ..........: the wire has to be soldered to the point #. Enrico Segre, segre@naima.polito.it