Ken: Thank you for your e-mail. Well, I wish that I could say that I did it, but it was my friend, K5HMD, who had moved to Oklahoma from Dayton, Ohio. I recall that I helped him with the boards and the space on the building and other small things. He designed and built it. He is now living in Texas and I will send him an e-mail to ask him if he remembers when he did this.
Speaking of card cages, about this time I collected some designs and laid out a four board TT decoder which used an AGC and bandsplitter prefilter, eight 567's, eight NE555's wired as missing pulse detectors, and the logic for 1 of 16 output. It worked fairly well, but the 567's had to be touched up from winter to summer and vice versa. I also laid out the K2OAW ider and three other cards that had a simple squelch tail and time out time (from 73 Magazine), a power supply, controller, and timer for the ider that we designed, and a latch board that had two D flip-flops for controlling the repeater. I originally used 6" x 3" cards for this, although I later laid other cards using 22 pin edge connectors on plug-in boards that were 4 1/2 x 6 1/2 in size. This included a Mostek 5103 TT decoder with an AMI S3525 digital prefilter. I also laid out a Micor squelch card which could take discriminator audio and had all the adjustments and logic for a repeater and included an LM386. Some friends of mine revised the circuit board and this card is still being used today on the repeater. I will let you know if I get any more info. Micheal Salem N5MS Ken Arck wrote: > Very cool, Michael. If it's not too much of a hassle, it would be nice to > know who was first :-) > > Ken > > > At 09:36 PM 9/19/2004 -0500, you wrote: > >>Ken: >> >>About that same time a friend of mine in Norman, Oklahoma >>modified his UHF to VHF remote base to add a home built >>GLB synthesizer to his tube VHF remote. He built the >>logic for it and I think that he used a 567 tone decoder >>set. I remember this because it was after I got out >>of school in 1975. I think we later went together and >>bought a Telenetics (?) hybrid digital tone decoder and he >>built it onto a plug in board and substituted it for >>the 567's. It worked great and the remote base was a >>lot of fun to use. >> >>In fact, somewhere I may still have an extra set of GLB >>boards and the assembly instructions. >> >>He stored the frequencies in registers to program the GLB. >>When he had it ready, we put it up on the same building >>as the club repeater on the Oklahoma University Campus >>for which I am the trustee. >> >>The remote used Ringo Rangers, not good antennas. We put >>it about 100 foot horizontally down the building to avoid >>desense from the 146.88 repeater, but there would still >>be some when the remote came up. >> >>He could bring up the receiver, change frequencies, >>then bring up the transmitter, and switch between hi >>and low power. >> >>Later he designed a board using 1702 eproms to use an >>IC-22s in a remote base. I laid out a PC board for >>him and made him several copies. Another very close >>friend of mine, K5JB, built one of the boards and used >>a KIM-1 (6502) microprocessor to control a 22s and make >>it scan. I may have the radio because he left me a >>bunch of his radio equipment when he passed away. In >>fact, I probably still have an EBKA Familarizor Single >>Board Computer which was very similiar to the KIM-1 which >>I got from the fellow who designed it and was an >>acquaintance of mine at the time. >> >>I could probably go back and try to get a closer date >>to when this was. >> >>Micheal Salem N5MS >> >> >> >> >> >> >> >> >>Ken Arck wrote: >> >> >>>Hi folks >>> >>>Is anyone aware of the earliest use of a synthesized remote base on an >>>amateur repeater? One that allowed full frequency agility? >>> >>>My take is that it happened in 1976 (and of course, I think I know who did >>>it <g>). >>> >>>Ken >>> > > ------------------------------------------------------------------------------ > >>>President and CTO - Arcom Communications >>>Makers of state-of-the-art repeater controllers and accessories. >>>http://www.ah6le.net/arcom/index.html >>>We now offer complete Kenwood TKR repeater packages! >>>AH6LE/R - IRLP Node 3000 >>>http://www.irlp.net >> >> >> >> >> >> >> >> >>Yahoo! Groups Links >> >> >> >> >> >> > > ------------------------------------------------------------------------------ > President and CTO - Arcom Communications > Makers of state-of-the-art repeater controllers and accessories. > http://www.ah6le.net/arcom/index.html > We now offer complete Kenwood TKR repeater packages! > AH6LE/R - IRLP Node 3000 > http://www.irlp.net > > > > > > Yahoo! Groups Links > > > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
