[MRCA] GRA-39 Gilbert Ops Walt Started this

[Walt Skavinsky]

Steve,

I have my gra-6 running on 5  -  9 volt batteries.   I have it hooked up to my prc47 and it has worked flawless.   I use just cheap dollar store batteries and the voltage is 49 volts with new batteries and the gra-6 requires 45.  I have had it running on and off over the past week and the batteries are still at 49 volts

Walt

On August 29, 2014 12:17:10 PM EDT, KA1LHZ <sboard.ka1lhz at gmail.com> wrote:
>Does anyone have experience with building a BA-414 to use in the remote
>of a GRA-6. I'd like to use mine with my MSC-37 comm shelter. I thought
>about using a series parallel group of 9 volt batteries but am not sure
>what the current draw is. I want to try using the GRC-106 remotely
>through the SB-22 switchboard. I did have the C-434 mounted under the
>radio with the old style slide in mount but removed it for weight
>reduction.
>Steve
>KA1LHZ
>
>On 08/18/2014 08:14 PM, Walt Skavinsky wrote:
>> Breck,
>>
>> I plan to bring my gra39 and have it connected to the shelter with my
>> prc25. I have a new addition to the project I just got a gra6 set and
>> after a little TLC it is working. I plan on connecting it to a prc47
>> or a prc41 not sure yet. So if we can hook it into the switchboard
>> that would be great I too am short of wire but I have been
>> substituting speaker wire. I am also interested in experimenting with
>> a retrans kit with a diplexer cu2194.
>>
>> Walt
>>
>>
>>
>> On August 18, 2014 3:09:57 PM EDT, "B. Smith" <smithab11 at comcast.net>
>> wrote:
>>
>>              I was impressed and inspired by Walt's GRA-39  setup
>last
>>     year, so he gets credit for having the first GRA-39 operation at
>>     Gilbert. He used one to go from his inside ops to his commo
>>     trailer outside the building to run a VHF set. (I have his demo
>on
>>     video if I can every finish the Gilbert 2013 web pages) I pulled
>>     my sets out last month (purchased several years ago at Gilbert
>for
>>     $5 bucks a box) and did some testing. Bad thing about the
>>     operations of each unit  - - the remote and the local control
>>     require 6 D cells each.  I found one really corroded battery box
>>     but found a replacement on ePay. The sets uses a 1500 cycle tone
>>     for control so a "direct pair" line is not necessary.  
>>
>>     During my testing I found that each unit can easily run off of a
>>     small 9 volt battery, current draw on the 2329 Local Control  was
>>     nil on receive and 20-25 ma on transmit (relay closes), so that 9
>>     volt battery should last quite a while. On the  2328 Remote the
>>     current draw is a little higher, 10 ma on receiver and approx 30
>>     ma on transmit.  Both sets have On and Off switches to conserve
>>     power, the manual ringer/buzzer still works without power to
>alert
>>     the operator to turn his set on.
>>
>>     A couple things I would like to try is see if you can parallel
>two
>>     Local Control units.  In addition I would like to try the wiring
>>     interface between the GRA-39 Remove Control and the SB-22 and use
>>     the switchboard to connect the system to different "subscribers"
>>     (that's teleco talk) .  And to use the set for HF ops. See
>diagram
>>     below.
>>
>>     Speaking of batteries, I need to hit the local dollar store and
>>     scoff up a supply of cheep D cells for all the phones etc.    
>:-)
>>
>>     GRA-39 to SB-22 diagram below.
>>
>>     Z
>>
>>
>>
>>
>>
>>
>> -- 
>> Sent from my Android device with K-9 Mail. Please excuse my brevity.
>>
>>
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>
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-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.
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