WisconsinRailfan said:
Ya, I have a great hot-to with up close pictures, just worried about my soldering skills.
link to site
http://www.naturalgfx.com/pro97_discriminator.htm
I sure wish I lived a little closer, I'd do it for you. Judging from the responses, you're either expected to RTFM (read the #*%* manual) or nobody wants to step up because they don't want to be responsible for your scanner suddenly not working properly after they tap it for you. Given the scanners that can be had for cheap out there, by another cheap one that covers the frequency range you want to use the tapped scanner on and attempt the mod on that one - of course some scanners are more easily modified than others. But it doesn't have to be another PRO-97.
I'd hate to suggest that you take it somewhere, but maybe stop in over at Fred Osterman's place - what the hell is that called.. Oh, Universal Radio, if it's still over in Americana Circle. Somebody there might be willing to do it (and will probably charge you $50 bucks or something like that to do it).
As you can see, the above option may be doable - but given the potential cost of having a radio shop do it, it might be better to just buy a second one and attempt it yourself.
I will say this - given how easy it is to get to TP4 on the Pro97, there is more room for 'shoddy soldering' - meaning that you won't have to be _quite_ as cautious about, for instance, having a piece of hot solder drop on a space between two traces and suddenly make them one - or solder two pins of an IC together accidentally. That's a bummer when that happens.
You should go out and get the preliminary stuff - a resister of proper value (and proper value is hard to determine, everybody has an opinion - slicerwizard and unitrunker's suggestions for resistor values are the ones I would tend to use. Get the standard phono jack - get a drill and drill a hole somewhere in the case for the jack, etc. Maybe after you do the easier things and the only thing left to do is solder up the items, you may feel more comfortable/have more confidence in doing the job yourself.
Assuming you have a soldering iron, solder, perhaps some flux (not the flux you use on your plumbing), and can gather all the needed parts, I believe you can do it - and you'll get the warm fuzzies after you've done it successfully
Mike
