[MRCA] GRA-39 Gilbert Ops Walt Started this

[KA1LHZ]

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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