Apologies!
Argggh...This e-mail client! It kept telling me the transfer failed, so
I rebooted and sent it again. Now I find 3 instances of the almost same
message!
Roger (K8RI)
On 4/20/2016 Wednesday 7:53 PM, Roger (K8RI) on TT wrote:
Always plan on allowing for expansion.
The only real drawback with automatically operated remote switches
over manual is cost. Hookup may, or may not be more complex. It's
usually, follow the directions.
The nice thing about a decoder and a controller is it will pick the
proper antenna for you (once it is properly connected). The odds of
the wrong antenna using manual switches, even properly labeled are
quite high. IOW, it becomes a question of when, not if you transmit
into the wrong antenna. Yes, I know there are those who say they have
used that scheme for years without a problem, but according to the
odds they are the lucky exception rather than the rule.
I trust computers only after a program has proven itself. The same
goes for all the connection. There is the old saying, "To err is
human, but iy takes a computer to really screw up" USUALLY a computer
program is thoroughly proven by the time it gets to the public, but
there have been some notable screw-ups in operating system updates.
Another point about the remote selecting switches is they easily allow
for adding antennas to the system. They do not have to be monobanders.
20, 15, and 10 can all selected as the same antenna with most
systems. My rig allows selecting a particular output for each band.
My six pack has remote switches connected to two of the outputs. That
means few of those connections identified with a band actually are
used for that band.
NOTE: If you end up with any unused connectors (IE SO239s) lightly
lubricate the threads and use a plastic cap to cover the connector.
If not properly weather proofed the silver plated connectors will
rapidly deteriorate. I've had them become unusable in just a few months.
73
Roger (K8RI)
On 4/18/2016 Monday 6:47 AM, Earl Morse wrote:
For simple as possible, skip the remote switches. Run all the coaxes
into the shack. Have a 4 to 6 way coax switch on each radio. Use 2
way switches to switch the more popular antennas between either
radio. It is manual operation but you probably have everything
laying around the shack to put it together now.
While having the ability to switch any antenna between either radio
and having 2 antennas for each band is nice you will find that for
SO2R you tend to have a primary radio and a secondary radio. Primary
is going to be running on the most productive bands with the best
antennas while the secondary radio is going to be S&Ping on the off
bands with whatever antennas you have left over, most likely the next
band up or down from the run radio. The important bands of interest
are going to change depending on the contest. In most cases,
propagation will make bands mutually exclusive of each other. For
example, you won't need 160/80M during the day when 20-15-10M is
hopping, and vice-versa. So being able to switch any antenna to any
radio at any time probably isn't needed.
Run it manually for a while and you will figure out exactly what you
need.
Earl
N8SS
------------------------------
Message: 6
Date: Sun, 17 Apr 2016 19:13:51 -0400
From: "Douglas Ruz / CO8DM"<co8dm@frcuba.co.cu>
To: "Towertalk"<towertalk@contesting.com>
Subject: [TowerTalk] 6 x 2 unit...
Message-ID:<00d701d198fe$d1ef96b0$75cec410$@co.cu>
Content-Type: text/plain; charset="us-ascii"
Hi,
I am building a simple as possible SO2R configuration.
I need some advices about a 6 x 2 antenna relay unit.I prefer a kit
because
it is cheaper.
I think I need build also a Band decoder.any idea?
Thanks,
Doug, CO8DM
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
--
73
Roger (K8RI)
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|