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-   -   Rx antennas (https://www.rctech.net/forum/radio-electronics/1018088-rx-antennas.html)

cmego 05-24-2018 06:19 AM


Originally Posted by Roelof (Post 15231851)
And this is a typical reaction as many people on this forum. You think you know it all but actually with this post you show that you have no clue how it really is. You really think the antenna wire is something special made from golden locks weaved by elves at full moon? Wake up and see it is just an every day cheap wire. With older receivers just a simple wire and with later receivers a coax cable.

I have no clue? I have over 35 years experience in the electronic industry repairing video,pinball,home entertainmet,and proaudio. Wire may be simple in your world but there are many factors that go into wire choice including impedance and capacitance but if you want to pass on bad advice be my guest .Kirt out.

the rc guy 05-24-2018 06:27 AM


Originally Posted by cmego (Post 15233690)
I have no clue? I have over 35 years experience in the electronic industry repairing video,pinball,home entertainmet,and proaudio. Wire may be simple in your world but there are many factors that go into wire choice including impedance and capacitance but if you want to pass on bad advice be my guest .Kirt out.

Thanks,, Great ADVICE.... 35 years of knowing 1st hand ............

Darkgenerals 05-24-2018 06:39 AM


Originally Posted by cmego (Post 15233690)
I have no clue? I have over 35 years experience in the electronic industry repairing video,pinball,home entertainmet,and proaudio. Wire may be simple in your world but there are many factors that go into wire choice including impedance and capacitance but if you want to pass on bad advice be my guest .Kirt out.

I guess spektrum should hire you, looks like they've been doing it wrong for a very long time.

the rc guy 05-24-2018 06:51 AM

some companies use cheap alternatives to a better quality connections to save a penny.

Roelof 05-24-2018 08:22 AM


Originally Posted by cmego (Post 15233690)
I have no clue? I have over 35 years experience in the electronic industry repairing video,pinball,home entertainmet,and proaudio. Wire may be simple in your world but there are many factors that go into wire choice including impedance and capacitance but if you want to pass on bad advice be my guest .Kirt out.

Oh yes, for many years I am also involved with all kind of electronics. So you know there is a huge scam market with HiFi and video cables like the very expensive gold cables for a better sound and picture quality? Even for a simple SPDIF (digital signal) there are special expensive cables with which people do believe it will give a better sound quality as we also see gold plugs for a lower connection resistance of the already high impedance audio line signal.

Yes, with COAX there is indeed an impedance factor although I doubt it is noticeable on the few centimeters of the receiver antenna as I never had noticed with short length 50 ohm cable using for antenna's and 75 ohm cable for network and video. The older receivers with a single wire I have replaced a lot, no issues there, even if the length was not excactly the same. But for an antenna the right length is the most important factor.

cmego 05-24-2018 12:13 PM


Originally Posted by Roelof (Post 15233758)
Oh yes, for many years I am also involved with all kind of electronics. So you know there is a huge scam market with HiFi and video cables like the very expensive gold cables for a better sound and picture quality? Even for a simple SPDIF (digital signal) there are special expensive cables with which people do believe it will give a better sound quality as we also see gold plugs for a lower connection resistance of the already high impedance audio line signal.

Yes, with COAX there is indeed an impedance factor although I doubt it is noticeable on the few centimeters of the receiver antenna as I never had noticed with short length 50 ohm cable using for antenna's and 75 ohm cable for network and video. The older receivers with a single wire I have replaced a lot, no issues there, even if the length was not excactly the same. But for an antenna the right length is the most important factor.

I agree with most of this except in pro lighting & sound when running DMX or ethernet the better the quality the difference is measurable in reliability and rejection to outside interference.Were way off topic here so I will quit.In a nutshell wire is wire until you use the wrong stuff then it's crap.

cmego 05-24-2018 12:14 PM


Originally Posted by Darkgenerals (Post 15233706)
I guess spektrum should hire you, looks like they've been doing it wrong for a very long time.

I'm no engineer nor would I pretend to be I just very good at electronic troubleshooting.Peace

Darkgenerals 05-24-2018 12:42 PM

My god the amount of humble brag in the thread is amazing,

.https://cimg0.ibsrv.net/gimg/www.rct...38b30532a6.jpg

cmego 05-24-2018 01:05 PM


Originally Posted by Darkgenerals (Post 15233899)
My god the amount of humble brag in the thread is amazing,

.https://cimg0.ibsrv.net/gimg/www.rct...38b30532a6.jpg

I consider myself very humble BUT when someone says I have no clue what I'm talking about when I actually do know.What would you do? Most of the time on R/C forums I ask questions, this time it was in my roundhouse and people say I don't know what I'm talking about.Read the entire thread.


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