[NLRS] 23cm ATV Question -- 75 Ohm SMA connection?

[Brad Phelps]

Thanks all for your responses.  I was able to use a jumper cable to a SMA->N 
Chasis connector [it seems] without problem.  I'm looking forward to getting 
things running and on the air, and will keep you informed of my progress.

Thanks again.

 - Brad
    AI0BP

----- Original Message ----- 
From: "Brad Phelps" <brad at what-u-want.com>
To: <NLRS at mailman.qth.net>
Sent: Thursday, October 05, 2006 12:28 PM
Subject: [NLRS] 23cm ATV Question -- 75 Ohm SMA connection?


>
>
> Recently I bought a 1.2Ghz transmitter/receiver ATV bundle as seen here: 
> http://www.hamtvstore.com/html/special_offers_.html.
>
> Upon looking at the descriptions a bit closer, I noticed that the antenna 
> hookup is a 75 Ohm SMA connection on the transmitter and receiver: 
> http://www.hamtvstore.com/html/23cm_atv_transmitter.html.
>
> Originally I wondered if maybe this was a normal thing for  ATV, but it 
> looks like ATV transmitters/downconverters made by PC Electronics and MFJ 
> use 50 Ohm connections.  ... When I ordered this, I saw that the supplier 
> is out of the UK, so I am wondering if 75 Ohm connections are "normal" for 
> ATV overseas?
>
> Does anybody know where I can get 1.2Ghz rubber ducks that will work with 
> these boards in the US?  I can order them from this same supplier, but it 
> took forever for the ATV boards to get here.  I don't want to repeat the 
> experience on the antennas if I can avoid it (stupid me for not ordering 
> them in the first place.)
>
> More importantly, if I want to use the transmitter with an amp (like the 
> 30W one offered by DEMI), what sort of problems am I going to run into? 
> It would also be nice to hook up the receiver to a beam at some point too.
>
> ... Probably newbie type questions, but what can I say...  I'm new to 
> this. ;-)
>
> Thanks in advance for your help.
>
> - Brad
>    AI0BP
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