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#1
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Richard Clark wrote:
Hi Gary, I see your problem right here. There are four ways to hook these up. 73's Richard Clark, KB7QHC Hmmm, I guess you post implies you are a bit short on beginning with the first way? How typical ... yawn Regards, JS |
#2
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On Sun, 12 Oct 2008 18:16:25 -0700, John Smith
wrote: Richard Clark wrote: There are four ways to hook these up. How typical ... yawn Go back to sleep, Brett. You certainly added nothing. Switch one center posts: Rig - now called the rig switch Switch two center posts: Antenna - now called the antenna switch Rig switch position 1: both sides to ground Rig switch position 2: both sides to antenna switch position 1 Antenna switch position 1: both sides to rig switch position2 Antenna switch position 2: both sides to ground Rig can be 1. open 2. grounded 3. to switched antenna Antenna can be 1. open 2. grounded 3. to switched rig Both rig and antenna can be independantly open or grounded, or interconnected. No real advantage in the open positions, but they are available as a 6 state solution. As such, a 4 state solution that was sought. More switches, more states. Classic cross-point switching. 73's Richard Clark, KB7QHC |
#3
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Richard Clark wrote:
... Go back to sleep, Brett. You certainly added nothing. ... 73's Richard Clark, KB7QHC I'll wakeup, when something interesting comes about ... Regards, JS |
#4
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Richard Clark wrote:
Rig can be 1. open 2. grounded 3. to switched antenna Antenna can be 1. open 2. grounded 3. to switched rig As a refinement I'd put a dummy load on switch #1 so that the choices would be: Rig can be: 1. Open 2. To dummy load 3. To switched antenna The antenna switch would remain the same -- open, grounded or to switched rig. I'd rather run my rig into a somewhat reasonable load rather than a short to ground during the inevitable instance of forgetting to set the switch properly. If running less than say 200 watts output then one could even use an incandescent light bulb for the dummy load. It would presumably light up if one were to inadvertently transmit in that configuration. So, the rig would be at least partially protected and the operator would have some indication of why no one is answering his CQ. Maybe a *red* light bulb? One could also physically (not electrically) parallel the switches so there were only two configurations. The rig connected to the antenna =OR= the rig connected to the dummy and the antenna connected to ground. That would be cool. 73, -- HZ |
#5
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On Mon, 13 Oct 2008 15:15:44 -0600, Hank Zoeller
wrote: Richard Clark wrote: Rig can be 1. open 2. grounded 3. to switched antenna Antenna can be 1. open 2. grounded 3. to switched rig As a refinement I'd put a dummy load on switch #1 so that the choices would be: Rig can be: 1. Open 2. To dummy load 3. To switched antenna The antenna switch would remain the same -- open, grounded or to switched rig. I'd rather run my rig into a somewhat reasonable load rather than a short to ground during the inevitable instance of forgetting to set the switch properly. If running less than say 200 watts output then one could even use an incandescent light bulb for the dummy load. It would presumably light up if one were to inadvertently transmit in that configuration. So, the rig would be at least partially protected and the operator would have some indication of why no one is answering his CQ. Maybe a *red* light bulb? One could also physically (not electrically) parallel the switches so there were only two configurations. The rig connected to the antenna =OR= the rig connected to the dummy and the antenna connected to ground. That would be cool. Hi Hank, Sounds like good advances toward full use of the two switches. 73's Richard Clark, KB7QHC |
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