The Turnkey Interface (TKI) is just what it says - it comes fully assembled and tested ready to connect your telegraph loop into your computer. It's available for both USB and RS-232 computer ports and the USB version is now available in an oak replica WU junction box.
Orders can be taken for the Turnkey MorseKOB Interface as detailed below. Depending upon demand and inventory at the time you order, it could take a few weeks to build, test, and ship a unit. I am trying to keep a few completed units in stock so that I can get them out when ordered. Bare PCBs will be for sale if available, please contact me before ordering PCBs to check the availabiity - PCB pricing details below.
USB version: Black plastic housing, 4.25" L x 2.6" W x 0.9" H; Integral USB adapter (FTDI drivers are available on their website
http://www.ftdichip.com/FTDrivers) with USB A to USB Mini B cable; removable plug-in
connector with screw terminals for connection to the loop supply and telegraph equipment. Unit will be fully assembled and tested.
$85, including shipping via USPS First Class Mail to addresses in the US.
USB version in Oak Replica WU Junction Box: Oak junction box similar to typical Western Union junction boxes found in many telegraph offices, 6.75" L x 5.5" W x 3.25" H; Integral USB adapter (FTDI drivers are
available on their website
http://www.ftdichip.com/FTDrivers) with USB A cable; brass screw terminals
for connection to the loop supply and telegraph equipment. Unit will be fully assembled and tested.
$200, including USPS shipping to the continental US. Additional shipping charges may be necessary for other destinations.
A $35 credit will be applied for a customer's working USB Turnkey Interface that is returned for retro-fit into the oak box. Contact us for details. Interface will be tested upon receipt. Customer is responsible for shipping the interface back to us. Unused parts such as the housing will be returned.
RS-232 version: Same as above, but USB adapter is replaced with a female DB-9 connector for use with a "real" serial port with RS-232 specs. No cable.
$65, including shipping via USPS First Class Mail to addresses in the US.
Please make sure your computer has a real serial port before ordering this version. Many computers, particularly laptops, have only USB ports. If you don't have any DB-type connectors on your PC, you can be sure that you will need the USB version!
Snubber: One TVS diode will be included for use as a snubber across the sounder terminals. Two types are available:
a) for instruments of 100 Ohms or less
b) for instruments greater than 100 Ohms
The diodes are selected assuming that the loop current running through the instrument is within the recommendations found on the MTC website for Electrical Specifications for Telegraph Instruments. A photo of a non-destructive type of installation on a sounder can be seen at http://kob.sdf.org/morsekob/interface.htm#snubbers (solder it to the ring terminals to ensure a good connection).
Additional TVS Diodes can be ordered for $1 each with no charge for shipping if included with an interface order.
Extra Loop Connectors: $3.00 each with no charge for shipping if included with an interface order.
Bare PCB (no parts, no cable, no snubber diodes): If available, bare PCBs are $12 each, including shipping via USPS First Class Mail to addresses in the US.
For shipping addresses in PA, 6% PA Sales Tax will be added to the order total. For International orders, shipping will be via USPS Priority International Mail for an additional charge.
To order: Contact us at email@example.com for more information or with any questions.