Coax rating

[kdt1]

What’s the Coax rating on the supplied RB antenna?

Thanks

[CoastGuardJon]

Hi kdt1, the supplied antenna has RG 174 fitted.

[kdt1]

Thanks CoastGuardJon



What kind of loss am I looking at with the RG 174, what is it 5 meters?

[Allocator]

What are you thinking - replacing the co-ax?

[kdt1]

 Just curious at the loss, I don’t have the luxury of installing any thing
outside at this time.

I was thinking where I am at very few ADS-B show up, so when one
does I call the neighbors over for a (Quick) look. I think that’s why I am so
critical at times and put the ADS-B contact under the microscope. You guys
have so much ADS-B traffic in Europe. (Unreal)

I feel there may be possible signal processing issues at the software level.
Ill quit drifting here.

Thanks

[Allocator]

I haven't really worked it out scientifically, but I get around 50% of the aircraft in MyFlights with full ADS-B here in the West Midlands of the UK.  What I am seeing though is more GA traffic with Mode S transponders, so that is distorting my average a bit, but overall, it must represent more airline traffic with full ADS-B.

Only my opinion of course ........... ;-)

I'm using the BS1100 external antenna with about 10 metres of cable - can't see any markings on it, so nothing special I guess.

Report for today attached if you are interested - 1072 aircraft so far

[kdt1]

You Killing me! That reads like a phone Book.

Thanks

[tarbat]

I get about 30% with ADS-B - 3,006 aircraft out of a total of 9,213.

[besty]

I'm on about 40% with 4006 out of 9911 full ADSB.

I've also attached my log for today with 1020 flights so far.

[Yachtie45]

Hi all,

that mentioned RG174 (RG174A/U) is twice as bad as RG58   at any length

RG58 @ 1000 MHz  55dB/100m

RG174 @1000 104 dB/100m  !

Aircell5 @1000 32.8 dB/100m
Aircell7 @1000 22.5 dB/100m

so judge for yourself, even if you have only 5meters to cover it is worth getting rid
of the RG174.

IMHO there are only 2 advantages of RG174 it is very cheap and superflexible,
but flex is guaranteed also with the 5 - 7 mm dia Coaxes since most have stranded
inner wire.

rgds
Klaus

[kdt1]

Don’t laugh to hard.
Pitiful 30 off and on ADSB out of 4334

[kdt1]

Hi all,

that mentioned RG174 (RG174A/U) is twice as bad as RG58   at any length

RG58 @ 1000 MHz  55dB/100m

RG174 @1000 104 dB/100m  !

Aircell5 @1000 32.8 dB/100m
Aircell7 @1000 22.5 dB/100m

so judge for yourself, even if you have only 5meters to cover it is worth getting rid
of the RG174.

IMHO there are only 2 advantages of RG174 it is very cheap and superflexible,
but flex is guaranteed also with the 5 - 7 mm dia Coaxes since most have stranded
inner wire.

rgds
Klaus

I was afraid there was going to be a substantial loss with the RG174 coax even
on a 5 meter run. Certainly doesn’t help with the RG174.

I think they advertise the antenna with a low loss cable.

Thanks Klaus

[Allocator]

Well, I use the SBS-1 standard magmount often on my RB with about the same length of cable, and I can't really see any difference in performance.

It's back to that "scientific testing" question again - lol

[EGNXR]

Low loss or not its all about how high and open you can get your aerial.

I've got mine outside at roof height its been there two weeks. I get around 40% ADSB flights 3873 of 8666. Attached is todays log and Polar. EDIT (Standard aerial)

Just for info from the logs posted G-RCEJ is now G-IFTF and 43C38A is ZH536 so ZF573 should be 43C38B.
Been updating my DB today so thats how I know:-)

HTH
Cheers John

[kdt1]

Low loss or not its all about how high and open you can get your aerial.

HTH
Cheers John

So you use the RG174 coax and aren’t concerned because you have height?