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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Tue Apr 25, 2017 8:44 pm 
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alfenheim - FlightAware user avatar

Joined: Fri Mar 18, 2016 4:03 am
Posts: 3
What is the best outdoor or weatherproof cable for this antenna and FlightAware Pro Stick? I did actually buy this cable (https://www.amazon.com/gp/product/B000F ... UTF8&psc=1) but it's significantly dropping receiving signal which was quite disappointing. Any idea or experience with this cable? I both tested with 6.5/26.2ft version.

Any recommendation will be highly appreciated.

Chris


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Tue Apr 25, 2017 8:56 pm 
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mduell - FlightAware user avatar

Joined: Wed Jul 27, 2005 3:00 pm
Posts: 5122
Location: FAWHQ
alfenheim wrote:
What is the best outdoor or weatherproof cable for this antenna and FlightAware Pro Stick? I did actually buy this cable (https://www.amazon.com/gp/product/B000F ... UTF8&psc=1) but it's significantly dropping receiving signal which was quite disappointing. Any idea or experience with this cable? I both tested with 6.5/26.2ft version.


The problem with that cable is it's reverse (polarity) SMA, there's literally no pin on either end just a gap between the cable and the dongle connector. You need a normal male SMA to male N cable.

Could trying stuffing a little bit of bare wire in there between the holes in the cable and the dongle; should get much better results.


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Tue Apr 25, 2017 9:33 pm 
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abcd567 - FlightAware user avatar

Joined: Sat Feb 15, 2014 3:08 am
Posts: 1980
Location: Toronto CYYZ
alfenheim wrote:
What is the best outdoor or weatherproof cable for this antenna and FlightAware Pro Stick? I did actually buy this cable (https://www.amazon.com/gp/product/B000F ... UTF8&psc=1) but it's significantly dropping receiving signal which was quite disappointing. Any idea or experience with this cable? I both tested with 6.5/26.2ft version.

Any recommendation will be highly appreciated.

Chris

mduell wrote:
The problem with that cable is it's reverse (polarity) SMA, there's literally no pin on either end just a gap between the cable and the dongle connector. You need a normal male SMA to male N cable.

Could trying stuffing a little bit of bare wire in there between the holes in the cable and the dongle; should get much better results.


TEMPORARY WORKAROUND
The SMA-male has center pin. The reverse SMA (RP-SMA) male does not have a center pin, it has a hole. The center wire connection is open because of missing pin. A temporary workaround is to cut a short piece of center wire of coax and insert in hole of RP-SMA male. This piece of wire will act as the missing pin, and connection will be established.


Image



DIFFERENCE BETWEEN SMA AND RP-SMA
Image


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Tue Apr 25, 2017 10:22 pm 
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alfenheim - FlightAware user avatar

Joined: Fri Mar 18, 2016 4:03 am
Posts: 3
mduell wrote:
alfenheim wrote:
What is the best outdoor or weatherproof cable for this antenna and FlightAware Pro Stick? I did actually buy this cable (https://www.amazon.com/gp/product/B000F ... UTF8&psc=1) but it's significantly dropping receiving signal which was quite disappointing. Any idea or experience with this cable? I both tested with 6.5/26.2ft version.


The problem with that cable is it's reverse (polarity) SMA, there's literally no pin on either end just a gap between the cable and the dongle connector. You need a normal male SMA to male N cable.

Could trying stuffing a little bit of bare wire in there between the holes in the cable and the dongle; should get much better results.


Wow, now I understand what "reverse" means....thanks very much mduel!


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Tue Apr 25, 2017 10:24 pm 
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alfenheim - FlightAware user avatar

Joined: Fri Mar 18, 2016 4:03 am
Posts: 3
abcd567 wrote:
alfenheim wrote:
What is the best outdoor or weatherproof cable for this antenna and FlightAware Pro Stick? I did actually buy this cable (https://www.amazon.com/gp/product/B000F ... UTF8&psc=1) but it's significantly dropping receiving signal which was quite disappointing. Any idea or experience with this cable? I both tested with 6.5/26.2ft version.

Any recommendation will be highly appreciated.

Chris

mduell wrote:
The problem with that cable is it's reverse (polarity) SMA, there's literally no pin on either end just a gap between the cable and the dongle connector. You need a normal male SMA to male N cable.

Could trying stuffing a little bit of bare wire in there between the holes in the cable and the dongle; should get much better results.


TEMPORARY WORKAROUND
The SMA-male has center pin. The reverse SMA (RP-SMA) male does not have a center pin, it has a hole. The center wire connection is open because of missing pin. A temporary workaround is to cut a short piece of center wire of coax and insert in hole of RP-SMA male. This piece of wire will act as the missing pin, and connection will be established.


Image



DIFFERENCE BETWEEN SMA AND RP-SMA
Image


Now I fully understand the difference. Also thanks for providing workaround, let me give a try and will see how it goes!


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