[QCWA] RS-232 to TTL converters.

[Jeffrey D Angus]

<http://www.ebay.com/itm/280926193210>

$14.24 for five including shipping.
How can you go wrong with that? I can't even buy just the IC
and a 9 pin connector for that.

Earlier, there was mention of some HM312 (I think) Mosfet
optocouplers for talking to the loop circuits. Apparently these
are no longer available, but I did find some Toshiba TPL227GA
couplers at Mouser.com. 400 Volts @ 120 mA.
<http://www.mouser.com/ProductDetail/Toshiba/TLP227GAF/?qs=sGAEpiMZZMugPZL2oX39yEcVQVNs6Y3G3hmjo6koHxU%3d>

I know I can use some 4N25 or similar optocouplers on the
loop side for keying sense.

I _know_ if I bought this stuff, the Black Box converters I can't
find in the shop will magically appear now. ;-)

Jeff-1.0
wa6fwi