substitute for antenna 300 ohms to 75 connection.

[ivtec]

Hi guys; i'd like your opinion on this project i made for my roof top antenna,to substitute the matching transformer.
first my Antenna rotator broke so i took it down and fixed it,it had some bolts that fell off then i had to take out the antenna 300 ohms to 75 ohms matching transformer,which broke upon unbolting it witch was bad luck,now i have no matching balloon an the worst part nowhere to buy it ,use to get stuff near here from Radio Shack which closed ,
i have also installed a SVA15PRSM distribution Amp near the antenna and a 12v SVPI ,these items were installed before, but inside the house closer to the receiver.
now story short,since i did not have the matching transformer ,i did not want to go by without tv i made a straight connection with coaxial cable ,took out the F connector and striped the coaxial wire connected ground wire to one side and the middle wire to the other, and for my surprise i never had so many chan and so good reception,but someone suggested me, due to water getting inside the wires to get a outdoor matching transformer.

well made this strait wire to connect from the antenna to the amp

as you see i cut 2 pieces of thin ground wire and connected and soldered an F type connector that i cut from type F cable connectors,
what you think about this? will it work?i know i should go up there and try! but up there are 50 feet high and no easy access and i'm not young anymore, so will this work at least same way i have now? thanks

http://postimg.org/image/d161lt343/ef75894e/

[keeney123]

Re: substitute for antenna 300 ohms to 75 connection.

Could you not just use red high temp silicon to seal the end of the cable where you stripped the coax? I say red silicon because it hardens better than the other silicon. Of course you might want it to be flexible if there is stress being put on it. This way you would illuminating one connection and what you have now seems to work fine.

[ivtec]

Re: substitute for antenna 300 ohms to 75 connection.

Could you not just use red high temp silicon to seal the end of the cable where you stripped the coax? I say red silicon because it hardens better than the other silicon. Of course you might want it to be flexible if there is stress being put on it. This way you would illuminating one connection and what you have now seems to work fine.

Thanks keeney123; that's a great idea, so i don't have to mess up with my good reception, i went from 34 chan to 60 chan,

[R_J]

Re: substitute for antenna 300 ohms to 75 connection.

one of these places might have one.
http://www.homedepot.com/p/Channel-M...4444/203763061
http://www.lowes.com/pd_302829-63374...ductId=3724168
http://www.bestbuy.com/site/channel-...&skuId=3980063

[ivtec]

Re: substitute for antenna 300 ohms to 75 connection.

Could you not just use red high temp silicon to seal the end of the cable where you stripped the coax? I say red silicon because it hardens better than the other silicon. Of course you might want it to be flexible if there is stress being put on it. This way you would illuminating one connection and what you have now seems to work fine.

kenney123 you're talking about this?


http://www.amazon.com/Permatex-81160...01VD2Y1J5BRQD2

[ivtec]

Re: substitute for antenna 300 ohms to 75 connection.

kenney123 you're talking about this?


http://www.amazon.com/Permatex-81160...01VD2Y1J5BRQD2

Hi guys for someone out there that don't know better,don't waist money on matching balloons that end up failing very often,as mine did just do as i did, see pic,and add silicon to the striped ends,it will give you better signal and more chan,i tried this with and without balloon,and result without balloon you get better.

http://postimg.org/image/osp3l70qh/e9c3dc75/

[keeney123]

Re: substitute for antenna 300 ohms to 75 connection.

kenney123 you're talking about this?


http://www.amazon.com/Permatex-81160...01VD2Y1J5BRQD2

Yes that is the correct one I was talking about. They are different manufacturers but that is the one I found the cheapest.

[keeney123]

Re: substitute for antenna 300 ohms to 75 connection.

Evidently the gain of the modern TV does not require antenna matching.

[ivtec]

Re: substitute for antenna 300 ohms to 75 connection.

Evidently the gain of the modern TV does not require antenna matching.

I have people telling me that this way without matching ballun, only working with half an antenna, one side is grounded out by the coax shield.
this maybe true for some install,for my set up,it maybe better for signal since chan are fairly strong even without amp,i know for example on chamn 38 i use to get signal go low if i put a stronger amp 24DB in place of the 15DB, SVA15PRSM

[SteveNielsen]

Re: substitute for antenna 300 ohms to 75 connection.

There is nothing wrong about using a monopole antenna. Cheap typical TV type baluns aren't tuned very well and have signal loss at higher frequencies (uhf).