[TowerTalk] 6 x 2 unit...

[Roger (K8RI) on TT]

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 at frcuba.co.cu>
>> To: "Towertalk"<towertalk at 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 at contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>
>


-- 

73

Roger (K8RI)


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