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[Miguel Dahl]

I used to work for another rental company and their «fat» antenna-cables were listed as RG-213 in the rental software. At my current job we have cables that look and feel the same. AFAIK these cables were bought from Sennheiser. When i look at Senns antenna booster AB3 they list «GZL5000». Out of curiosity, is the GZL5000 the «same» as RG-213? Is GZL5000 maybe just Sennheisers product name for RG-213?

[Mac Kerr]

I used to work for another rental company and their «fat» antenna-cables were listed as RG-213 in the rental software. At my current job we have cables that look and feel the same. AFAIK these cables were bought from Sennheiser. When i look at Senns antenna booster AB3 they list «GZL5000». Out of curiosity, is the GZL5000 the «same» as RG-213? Is GZL5000 maybe just Sennheisers product name for RG-213?

I can't find any information at all on a cable GLZ 5000. You can check the performance of pretty much any coax with the Times Microwave Calculator. In the extensive list on this calculator there is nothing that could be interpreted as GLZ5000. For an RG213 type cable Times Microwave LMR400 has slightly better performance.

Mac

[Miguel Dahl]

I can't find any information at all on a cable GLZ 5000. You can check the performance of pretty much any coax with the Times Microwave Calculator. In the extensive list on this calculator there is nothing that could be interpreted as GLZ5000. For an RG213 type cable Times Microwave LMR400 has slightly better performance.

Mac

That's the reason I ask. I can't find any performance data on "GZL 5000". So I'm wondering if this is just a Sennheiser name for RG-213. Are they interchangeable/same?

My rule of thumb is at the frequencies we operate at (550-ish MHz, Band A Sennheiser) is that RG 213 is 21dB Attenuation @100m, and RG58 is 58dB@100m. Sort of ballpark.

I've been using this:

http://rfelektronik.se/manuals/Datasheets/Coaxial_Cable_Attenuation_Chart.pdf (This is a hobby-radio guy or something, so I guess his numbers are copy/paste from an unknown source)

*Edit: Edited header of the thread.

[Mac Kerr]

That's the reason I ask. I can't find any performance data on "GZL 5000". So I'm wondering if this is just a Sennheiser name for RG-213. Are they interchangeable/same?

Part of my point was that I don't see that number on Sennheiser's site either. Where are you getting that number? Recently I think Sennheiser has been recommending 9913 which has slightly better specs than RG213, but not quite as good as LMR400.

Using online calculators I get the following loss numbers at 550MHz through 100' of cable:
RG58   -   11.1 dB
RG8U  -    5.0 dB
RG8x  -     9.2 dB
RG213 -   5.0 dB
9913   -    3.2 dB
LMR400  3.0 dB

Of course these low loss cables (RG8, RG213, 9913, LMR400) are all about 1/2" in diameter, and if your kink them or crush them these numbers go out the window.

Mac

[Russell Ault]

I used to work for another rental company and their «fat» antenna-cables were listed as RG-213 in the rental software. At my current job we have cables that look and feel the same. AFAIK these cables were bought from Sennheiser. When i look at Senns antenna booster AB3 they list «GZL5000». Out of curiosity, is the GZL5000 the «same» as RG-213? Is GZL5000 maybe just Sennheisers product name for RG-213?

Judging by this product info sheet, GZL 5000 is an old (nearly discontinued, by the looks of it) line of Sennheiser coax. Specs look similar to LMR-240.

-Russ

[Miguel Dahl]

I found out the cables we have are called Ecoflex 10, made by "ssb.de". It says 9,6 db loss @500MHz/100m.

[Miguel Dahl]

I found the GZL 5000 reference here: https://assets.sennheiser.com/global-downloads/file/6984/AB_3_Manual_06_2016.pdf

[Miguel Dahl]

So if the GZL cable is LMR-240-ish then I'd be good with one booster for 60 meters of the Ecoflex cable. I guess if I join two cables to get the 60 meters with a BNC male-male the drop would be negligible?

[Mac Kerr]

So if the GZL cable is LMR-240-ish then I'd be good with one booster for 60 meters of the Ecoflex cable. I guess if I join two cables to get the 60 meters with a BNC male-male the drop would be negligible?

From those specs it looks like ballpark 6-8dB of loss over 60m. If you use a coupler there will be a slight additional loss, and you need to make sure to use a 50Ω barrel to mate with the 50Ω connectors on the cable. Do not use a barrel intended for video.

Mac

[Miguel Dahl]

From those specs it looks like ballpark 6-8dB of loss over 60m. If you use a coupler there will be a slight additional loss, and you need to make sure to use a 50Ω barrel to mate with the 50Ω connectors on the cable. Do not use a barrel intended for video.

Mac

Thanks on the heads up on the barrels 50 ohm. May I ask what happens if I'd use a 75 Ohm? My thinking it's just sort of a very short stretch of the entire length.

[ProSoundWeb Community]