If you don't need a lot of power look at the Kenwood TKR-740    we use a lot 
of the tkr840 and love them.

John


----- Original Message ----- 
From: "Denny" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Saturday, February 19, 2005 11:26 AM
Subject: [Repeater-Builder] Re: Building a repeater from Motorola VHF 
portable


>
>
>
> Thanks for the input. It is 150MHz and we would have a 5Mhz split.
> What is the best process for shielding the two radios? Are there
> cases out there or some foil type products?  What would happen if we
> just connected to the two radios together and separated the antennas?
>
> I looked at the R1225 and it is a little big but may work if need
> be. Would a Motorola PAC RT work?
>
> Denny
>
> --- In [email protected], Eric Lemmon <[EMAIL PROTECTED]>
> wrote:
>> 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
>>
>
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>
> Yahoo! Groups Links
>
>
>
>
>
>
> 





 
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