The telephone company does this, too. It's called "sealing current" but they use a larger voltage than 'a few volts'. This does not have to be continuously applied. I think modern telephone central o
Thought I would toss this idea out ... After many years of being 'deaf' on Top Band, I am thinking of asking for temporary use of the field behind my property again. (The owners have changed since I
I used the old cableless Heathkit remote switch for a while, until it got hit by lightning. It didn't work too well after that. The problem I see with using anything other than cheap surplus relays i
The newer version of the RCS-4 should be better at switching receiveonly signals. It now uses fully sealed relays which are more immune to contact contamination. The older open-frame relays were OK
Bill, I used two of the RCS-4 in Yangon, Burma, for the XZ1N DXpedition in 1998. Worked well. I have used them here at home and in portable operations many times through 1,000's of feet of 1/2" and R
I agree with Tom. I have been using the RCS-8V (5 position switch) for switching my beverages for about 12 years. Every year I need to open it and burnish the contacts after removing bugs, spider web
Hi Tom et al, A trick I learned from a relay manufacturer a few years back, is to put some DC on the lines being switched. Just a couple of mA from a few volts is enough. It seems that the micro arc