--- In [email protected], "hooker" <[EMAIL PROTECTED]>
wrote:
> Hello group,
>
> I have the opportunity to put up a UHF ham repeater in a fantastic
spot.
> However, I have some pretty stiff requirements. It will be co-
located with
> an existing Govt. repeater, which is solar powered. I do not have
to supply
> the battery or PV panel, I will use whats there. I have already
hiked up
> and installed the DB408 + LDF4-50 / Polyphaser. Lets see what the
group can
> come up with...
>
>
>
> 1. Needs to be as light as possible, since I have to hike it up to
the top
> of an 8K feet peak. (5 hour round trip).
>
> 2. Must be efficient, no heaters on crystals, etc.
>
> 3. Must be able to operate over wide temperature ranges, no
heating or
> cooling in the box.
>
> 4. Will be solar powered.
>
> 5. I am thinking a maximum of 10 watts.
>
> 6. It needs to be robust, with resistance to lightning strikes.
>
> 7. I picked out a controller, the NHRC 4, seems pretty nice. I
want it to
> be able to turn ON / OFF the main TX in case there is trouble.
>
> 8. I need TX board, RX board, and an RX control RX (420 region).
>
> 9. I already have the duplexer, a mobile type Celwave product.
>
>
>
> I was thinking along these lines: Obtain the RX and TX boards from
a MOT
> MSR2000 repeater, repackage them in lightweight BUD boxes. Install
the
> controller in another box.
>
>
>
> I know the group has better ideas, and I would love to hear them!
Let them
> flow!
>
>
>
> Thank you in advance,
>
> Tracy
Were I you, I would do the GE MVP with the NHRC drop-in controller
and perhaps Hamtronics or Maggiore for the control RX. Even a cheap
HT or scanner would suffice for a control RX and you would be able to
take advantage of the power save circuitry in most HT's. My MVP's on
UHF and VHF draw about 130 ma during RX (just the radio, no
controller) and the TX current draw would vary with output, but could
be less than 3-4 amps with about 5-10 watts. I have heard of people
using modern style power save circuits to decrease power consumption
by 50% or more during RX idle time.
You will spend too much time trying to re-invent the wheel by horsing
with the modules and separate enclosures as well as the cables,
feedthroughs, RF connectors etc. Not to mention the extra expense.
The MVP is a known quantity, a known performer, in any environment.
This will be important with the notch only style duplexer. Plus, the
duplexing, tuning, and rack-mounting of the MVP can be done between
breakfast and lunch. That leaves the rest of the day for
installation. ;-)
Just my two cents.
John ab6li
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