[App_rpt-users] First duplex repeater - question about duplexor/power amp

ronald simpson n6gkj1 at gmail.com
Mon Oct 5 04:59:45 UTC 2015


Seriously???

Come on guys you can do better than this....

Turn the PA down to a power level the duplexer can handle.

Make up the losses with good quality Heliax and a good gain type antenna
like maybe 4 folded dipoles phased together.

Or buy the right duplexer...

In any case a repeater setup  is easy to get wrong and cause all kinds of
grief.

My advice is go to repeater-builders.com and read up on how to build a
repeater and what to expect.

Choose your components based on what you want to do with it.

If it is just going to be a toy, then build it cheap and don't expect much
when it does not perform.

If it is to be a viable system then get partners and spend what you need to
but... Look for deals

Deals are out there...
On Oct 4, 2015 4:49 PM, "Kirk Just Kirk" <wb6egr at gmail.com> wrote:

> Sounds like it's really a "Notchplexer".....OK for home use but thats
> about it. Since you have very low power your going to lose most of it in
> the filtering. Run 2 antennas and a single can on the RX...
>
>
>
>>
>>
>> ------------------------------
>> *From:* "mike at midnighteng.com" <mike at midnighteng.com>
>> *To:* app_rpt-users at ohnosec.org
>> *Sent:* Sunday, October 4, 2015 4:09 PM
>> *Subject:* Re: [App_rpt-users] First duplex repeater - question about
>> duplexor/power amp
>>
>>
>>
>> You can not do that.
>>
>> Even if you could,  how you would get a rx sig back through the amp ?
>> While it was working ?
>> It's the reason for the duplexer.
>>
>> Think about it for a few....
>> FULL DUPLEX
>> We all have those moments....
>>
>> ...mike/kb8jnm
>>
>> > Is there any reason why the power amp cannot be placed between the
>> > duplexor and antenna? My repeater will be 2 modular 1 watt radio
>> modules,
>> > a 20W capable 6 cavity duplexor and a Mirage power amp.If the amp is
>> after
>> > the duplexor then cool, if not then a more expensive duplexor will be
>> > required...
>> > TIA
>> > Â Steven Donegan
>>
>>
>>
>> > KK6IVC General Class FCC License
>> > Silver State Car #86
>> > www.sscc.us_______________________________________________
>>
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