If you do use 75 Ohm Type N connectors, do NOT attempt to mate them with
a 50 Ohm connector.
The center pins are different diameters to get the different impedance.
To mate a 50 Ohm Type N male with a 75 Ohm female will guarantee
destruction of the female connector.
I have had to clean up behind someone that dis not know the difference
and took a large downlink dish off line as the spread fingers of the 75
Ohm Type N broke off and shouted the cable and the LNB supply voltage.
There are also 50 and 75 Ohm BNC connectors, but, they achieve the
impedance difference bu use of dielectric,
These connectors can be mated 50 to 75 Ohm with out damage.
Just to warn of the possible damage.
73
Glenn
WB4UIV
On 12/6/2015 10:16 AM, David J Taylor wrote:
David,
You obviously is not working with 75 Ohm N-connectors on a regular basis.
Also, the point was to show that using proper connectors isn't going to
be a major issue in the loss process.
Cheers,
Magnus
====================
Magnus,
No, I've never seen a 75-ohm N connector, nor an N connector to fit
RG-6U cable. What a sheltered life I've led! But I quite agree that
for receivers, using 75-ohm components in a 50-ohm system (with care)
isn't an issue for an amplified GPS antenna.
Cheers,
David
--
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Glenn Little ARRL Technical Specialist QCWA LM 28417
Amateur Callsign: WB4UIV [email protected] AMSAT LM 2178
QTH: Goose Creek, SC USA (EM92xx) USSVI LM NRA LM SBE ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"
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