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

[Mike KBØozn]

Hi Brad, all,

I have what I think is the same board from them although I got mine a 
while ago.  I have just used regular sma connectors with mine with no 
problems so far.  In fact, I wasn't aware that there really was such a 
thing as a 75 ohm sma, perhaps others know.

I have used mine with a 3 watt amp from DEM with no problems what so ever.
Where are you located?  I'm just asking because I'm one of the local ATV 
guys in the mpls st paul area.  We have a net on Sunday nights at 9pm on 
the 147.12 repeater if you'd like to check in.  Otherwise watch 1250 at 
9 and point your antenna toward New Brighton vertical pol. and perhaps 
you will see us.  Our web page, a little dated at the moment, is at 
mnfat.net

If you have any questions about us feel free to drop me a line.

Good luck
Mike
KB0ozn


Brad Phelps wrote:
> 
> 
> 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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