I have prepared a GE MastrII repeater on 444 with a mobile duplexer,2
port controller,vhf simplex remote powered by a 55ah gel cell. Its
deployable by one person,can be plugged into a cigar lighter or an a/c
outlet. The cost is comparable with two Alinco mobiles,but the
performance is far superior. Typical use has been mobile in a vehicle
stationed on a hill and at a tower at the local EOC on pre-installed
antennas. We are working on building two more and maybe a VHF one as
well. It doesnt sit in a corner waiting for deployment,rather we keep it
on the air on a low antenna for local use,battery always on charge. We
have pre-installed antennas at the EOC,comm centers,hospitals and all
FD's in our county and test them regularly.A complete spare repeater is
also at the ready. We also have a simplex plan as well,utilizing the
pre-installed antennas.We also have similar setups for HF,packet and
VOIP. We will be well prepared for whatever happens rather than relying
upon some cobbled up mobiles or cross-band radios that would tend to
fail. No simplex repeaters to slow down traffic either. I STRONGLY
encourage all to take EMCOMM courses as well. This may be a requirement
to participate in disaster comms in the near future. Be prepared!
73,Lee,N3APP Erie County PA Skywarn,RACES,ARES. FCC GROL
Owner of 147.27/443.375/444.475 Tech support of 146.61/146.82/146.70
Dale Pratt wrote:
>Anything wrong with a simplex repeater for emergency use at about 10 to 25
>watts no duplexer needed just set up ant mobile radio with controller and on
>the air takes some getting use to but would do in emergency . Most hams
>radios can go out of band so could set up on freq needed .( with Permission
>Of owner of freq that is used ) .
>
>
NEVER EVER USE A HAM RIG ON ANY PUBLIC SERVICE BAND,STRCTLY ILLEGAL!!!
>
>On 2/21/06 9:10 PM, "Bob Dengler" <[EMAIL PROTECTED]> wrote:
>
>
>
>>At 2/21/2006 12:41 PM, you wrote:
>>
>>
>>
>>>I don't have a suitcase large enough to carry a repeater with duplexers
>>>suitable fot a 600KHz split.
>>>
>>>I am sure that something could be assembled with low enough output to
>>>handle the mobile duplexers that are so abundant for VHF; thre ones
>>>designed for a 5 MHz split. However, I can't see the beauty of a
>>>portable repeater that is 100% duty cycle at 2 watts output.
>>>
>>>
>>I have a 2 meter portable repeater using a VHF mobile duplexer at 2.655 MHz
>>split. Power output is about 22 watts. Single antenna, fits in a
>>backpack, no desense. Radio is a G.E. MVP; nothing with a broadband RX
>>will work as the duplexing depends in part on the narrow selectivity of the
>>G.E.'s helical resonators.
>>
>>
>>
>>> Even if
>>>you were able to get the power output to a level as high as 10 to 20
>>>watts, that portable tower structure is what I would like to hear about.
>>>
>>>
>>Mine is usually deployed on top of a building, so we just lash a 5 or 10
>>foot piece of galvanized EMT conduit to whatever won't generate IMD with
>>whatever antenna suits the need (3 element Yagi for directional coverage,
>>Comet/Diamond base omni for omni coverage). Proximity of the antenna to
>>the repeater hasn't been a problem.
>>
>>Bob NO6B
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
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