[MRCA] MILITARY/AMATEUR RADIO CROSSBAND COMMUNICATIONS TEST

w8au at sssnet.com w8au at sssnet.com
Wed Apr 24 00:35:41 EDT 2013


Breck:   Some additions to your info.   (From NWVC, one of the Navy Stations)

At 06:32 PM 4/23/2013, B. Smith wrote:
>This cross band operation is not as easy as it sounds,  to be 
>successful it requires a separate "tunable" receiver and careful 
>monitoring of the small segment of the hamband  to find the 
>frequency that the "civilian" station that the military station is 
>working, you listen on the military frequency for the ham call that 
>is in progress  and then you  pounce or camp  on that "civilian" 
>frequency with the other five hundred hams,  I used a PRC-47 and a 
>SGC-715 last time and it just about broke me, the PRC-47  was in 
>back of the vehicle with the speaker volume up and the SGC was on 
>the front hood.  So I was  running back and forth across the seats tuning ,

The MIL station is supposed to announce the exact freq monitored.  On 
CW it would be specific.  On SSB it might be + or -  a specific freq.

>  Maybe this year borrow another portable ssb set and set it beside 
> the SGC, its best to have a "tuning" dial to be able to scan back 
> and forth on the ham band  to enable searching for the "civilian" 
> station  that is in current QSO with the Military station. Requires 
> patience and a "contest" type of operation.  Sometimes the military 
> will announce the amateur band  frequency that they are listening 
> to And that will get you close .   .   .  but you stil have to 
> "zero beat" in order to be heard on SSB (suppressed carrier)

On CW it would pay to not be on the exact freq but within 500Hz. This 
is because most PLL rigs will end up QRMing each other, being on the 
exact freq.

>Don't be polite, just jump in. :-) As far as CW it was all most non 
>existent.

Some Army stations run CW.  AirForce normally not.  Navy/USCG at 
least one (NWVC) does 50/50 CW/SSB.
Last year NWVC did listen for MRCA stations but was not successful - 
On SSB they may have been QRMed, but on CW they should have
been heard.  Maybe this year ?

NWVC will be multi-op on two of the four assigned freqs at a time, 
shifting according to propagation.  80M will be used  morning and 
evening only.   If any MRCA stations want us to listen for AM, please 
request sked because we will specify 3885/7090/14286 only for those contacts.
We cannot transmit AM on MIL freqs, sorry.

Perry    (CHOP)


><http://www.usarmymars.org/home/announcements>http://www.usarmymars.org/home/announcements
>
>http://k4che.com/Aberdeen%202012/Page%201%20ABG%202012.htm
>
>On 4/23/2013 4:47 PM, Al Klase wrote:
>>Folks,
>>
>>Skip Behnke brought this on-the-air even to my attention.  (See 
>>attachment.)  Seems like it could be fun, and it happen on the 
>>Saturday of the Aberdeen meet, 11 May 2013.
>>
>>Regards,
>>Al - N3FRQ
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