Looking for 8X type coax with 20 ga / 4 wire control Siamese together. approximately 50 feet.(OR variations) Any sources ? Looking to get a OM on the the air in a assisted living. Working with a Icom
You might find some 75 ohm coax with wires as used in security/video/ ENG systems. Belden 9265 is RG59 + a shielded twisted pair. 9165 has 3 pairs. http://www.belden.com/techdatas/english/9265.pdf 1
Why the 4-wire control cable? You can use the coax for switching ... I invented the idea in the 70's... it's very much like what is in the ARRL Antenna Handbook (and the ARRL Handbook) ... similar sw
You can use the coax for switching ... I invented the idea in the 70's... it's very much like what is in the ARRL Antenna Handbook (and the ARRL Handbook) ... similar switching is available from MFJ/
Don, The question specifically stated the need to control an Icom AH-4 tuner. The Icom tuners require +13.8V and ground (which can be supplied via a bias T) but they also require control lines "start
Author: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Thu, 7 Jan 2016 11:04:43 -0500
Satellite systems might be another for 75/72 ohm cable plus control. I had about 100' of that, but when I switched to the small dish quite a few years back, I think it went out to the road. I liked C
Author: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Thu, 7 Jan 2016 11:12:46 -0500
Almost any Start/stop and tune can be encoded and decoded, but adds complexity to a build it yourself system. 73 Roger (K8RI) Don, The question specifically stated the need to control an Icom AH-4 tu