Denny,
The HT1000 is an excellent radio by itself, but its plastic case offers
no shielding whatsoever. It is possible to construct a compact low
power repeater with the HT1000 (or any two commercial quality portable
radios) if each radio is enclosed in a tightly-shielded box, with all
audio and control leads brought out through coaxial filter capacitor
terminals. The antenna lead would need to be brought out through a
separate bulkhead connector.
Once you have a completely shielded transmitter and a completely
shielded receiver, connect them to a compact (mobile) duplexer with
double-shielded cable such as RG-400/U. You will need a rudimentary
controller to handle the simple repeater functions. I am assuming that
the pair you intend to use in the 150 MHz VHF band has a 5 MHz split; if
it is less, a mobile duplexer won't work.
It would be a lot easier to use a 10 watt Motorola R1225 repeater
transceiver, instead of two separate radios.
73, Eric Lemmon WB6FLY
Denny wrote:
>
> I apologize ahead of time if this posting doesn't meet your
> criteria. I am with a law enforcement agency and we have recently
> killed our tactical repeater and are trying to build a temporary one
> from two HT1000 portable radios.
>
> I am in search of some expertise on whether this can be done
> successfully and if so how to do it. We are on 100Mhz VHF and are
> trying to decide how to best hook them up. I have the factory
> cables for cross connect and was thinking about using a VOX switch
> to key up the second portable. I was also thinking about purchasing
> a small duplexer from Tessco to keep a single antenna.
>
> Another option is to use a pre-made device from Transcrypt
> www.transcrypt.com called the Transpeater that claims to do the same
> thing but at a price of $650 US.
>
> Please advise
>
> Denny
>
>
> Yahoo! Groups Links
>
>
>
>
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