Link Communications
Controller
Hardware Hints
High Accuracy Temperature sensor using a LM335 and an Op Amp such as a LM324 or similar.
This will provide an accuracy of about one-degree.
An RS-232C Interface for ICOM Radios
Do you want to connect a remote base to your controller? Do you have an ICOM transceiver? You have to use what ICOM calls a CI-V Level Converter. They manufacture a CT-17 for about $150.00. If money is of little importance, you can buy the unit from your local ICOM dealer or you can build your own for about $20.00 even if you have to purchase new parts including a fancy case for the unit!
The parts are flexible and any small signal PNP and NPN transistors can be used. About the only part that should not be changed is C1, the 10 uF capacitor. The pin numbers are for a DB-25 and the bracketed numbers are for a DB-9.
This circuit appeared in the July 1992 issue of QST and was designed by Nigel Thompson, KG7SG.
More to follow soon
For additional programming hints or questions join the RLC remailer and share your ideas with other controller owners. This is an open list not sponsored by the company and not limited to Link Communications equipment. You should also check out the Link Communications sponsored re-mailer at http://www.link-comm.com.
Feel free to e-mail your hints and thoughts to me. I will post them to this site. This way they will be shared with other visitors.
HOSTED BY ifip.com
Last update 01/12/99