14442	2017-11-17 21:52:31	skipp025	ICM OX Modules - Invformation available on line?
Message	Date	From	Subject
Hello to the Group, ICM (International Crystal - RIP) many decades in the past, offered a series of about six (6) "OX" Experimenter Modules, in kit-form for sale. There was an oscillator, mixer, RF amp, broad-band amp and a small signal RF power amp come to mind. You can see the advertisement for these small board kits in many of the 1970's era QST Magazines. Are the instruction sheets for those modules available anywhere on the web/internet for general experimenting or repair/work with an original unit? Thank you in advance for your replies. cheers, skipp skipp025 at yahoo dot com
14443	2017-11-17 22:44:10	chuck adams	Re: ICM OX Modules - Invformation available on line?
In several of the volumes "Encyclopedia of Electronic Circuits" by Graf there are some of the schematics. There are 6 volumes, but the index in each volume also references the other volumes. I used one of the crystal oscillator modules barefoot on 40m one winter night to work from College Station, TX to Fargo, ND with a long wire. Using a Drake 2B for the receiver. Good times. I figure about 20-30mW out and don't ask about the harmonics. chuck, k7qo
14444	2017-11-18 09:20:50	Mike Czuhajewski	Re: ICM OX Modules - Invformation available on line?
I have the "manual" for the OX oscillator and will be sending him a scan in a day or two.
14445	2017-11-18 10:22:31	Gary Winblad	Re: ICM OX Modules - Invformation available on line?
There is a QST article from July 1967 that uses three of the modules. The schematics look like they are right out of the period ARRL Handbook to me. See article: "A Transceiving Converter For Less Than $30" By W2MJI 73, Gary WB6OGD
14446	2017-11-20 20:54:07	skipp025	Re: ICM OX Modules - Invformation available on line?
>> ICM OX Modules - Invformation available on line? > There is a QST article from July 1967 that uses three of the > modules. The schematics look like they are right out of the > period ARRL Handbook to me. > See article: > "A Transceiving Converter For Less Than $30" By W2MJI > 73, Gary WB6OGD Hello back, Thank you Gary and especially to Mike for sending me a PDF of the OX oscillator module he actually has one of. Being an ARRL Member, I found the above article in their archives and obtained it for review. Until this time, I didn't realize ICM initially offered the OX modules in a vacuum tube format. The actual kit modules I was looking for documentation about are small solid state boards. In a brief series of web searching, I found a 1972 ICM Catalog showing they solid state modules as being available at that time... selling prices were really cheap in today's money, but again that was 1972. I'm interested in some minor experiments with colpitts oscillators and even playing around with some of these small ICM solid state modules if I can find/buy one/them or just locate the diagrams and reproduce my own version. Just looking back at the tube versions... they mentioned article reminds me a lot of the vacuum tube Ameco brand receiving converters, preamplifiers and power supply modules... of which I've also done a little review. I am also a fan of Hamtronics kit receiving converters... they are a lot of fun to play with. If you really want to go obscure... even some of the 1970's vintage "Tunaverters" using your AM car radio as the back end of the receiver. So, again thank you and I'm still looking for more of the original ICM OX kit module information... there are/were 5 or 6 different boards offered. cheers, skipp skipp025 at yahoo dot com