[MRCA] GRA-39 Gilbert Ops Walt Started this

Fri Aug 29 13:42:53 EDT 2014

I'd like to try it with the GRC-106 parked in my driveway in the front
of my property and me with the C-433 in the back (1/2 mile or so away)
I've used DC remotes when I worked at a Motorola shop way back in the
dark ages. The only thing is that the GRC-106 has to be tuned before it
will transmit precluding any attempt to turn it on and off remotely so
another reason I removed the heavy mount, although it did look great.
73
KA1LHZ

On 08/29/2014 05:39 PM, Walt Skavinsky wrote:
> 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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