Re: Manual for Hamtronics (actually VHF Engineering) kit RX & TX The picture depicts a VHF Engineering Transmitter and Receiver Setup.
VHF Engineering Transmitters properly aligned are still quite usable. As you have probably noticed it and the receiver are both crystal controlled. Their Receivers were made up of combined modules as you have now. They are at best maybe OK for some situations. I wasn't fond of their squelch circuit and the front end projection is a bit lacking. I doubt I'd put a VHF Engineering Receiver up at any type of a busy mountain top as my main receiver. The receivers are now often found used as aux control receivers parked on some non critical frequency. Docs and manuals for VHF Engineering are available on the Repeater Builder Web site: http://www.repeater-builder.com/vhfe/vhfe-index.html One other side bar... in your example the receiver and transmitter have been installed in the same box, which is really not considered good construction practice. If the receiver seems to work and you feel like you want to try in a reasonable application then it would be prudent to relocate/separate the receiver from the transmitter strip... IE put them in different metal boxes shielded from each other. cheers, s. > "dmatyja2002" <dmatyja2...@...> wrote: > Hello, > > Can someone take a look at the pix in the files section > (hamtronicsR10576.jpg). This is a PIX of RX and TX strip for 220 Mhz. I > believe they are old hamtronics units. I would like to find scans of the > manual if someone has them. The RX is on the left of the image and seems to > be in 4 PCB segments, the socketed xtal in the upper left (hard to see). The > TX strip is to the right of the image on one board. TX is putting out about > 1/2 watt. > > Thanks for any info. > > -73 Dan WA6PZB >
