BNC male > female cable

[Basjke]

I need to buy 50 cm long BNC male > female cables to extend the BNC connection between balun and camera.

All I can find are coaxial ones, while obviously the one at camera and balun end are not coax.

Can I use them?

 

[Flintstone61]

something like this?

https://www.amazon.com/SUPERBAT-20inches-Applications-Antennas-Wireless/dp/B086JJGH3B/ref=sr_1_18?crid=3P5IHM9QI15LF&keywords=bnc+to+coax+adapter+50cm&qid=1658079993&sprefix=bnc+to+coax+adapter+50+cm%2Caps%2C77&sr=8-18

 

[Flintstone61]

how long is 50 cm LOL i was thinking feet.

 

[Flintstone61]

https://www.amazon.com/Male-Plug-Female-Adapter-Connector/dp/B077PFF21D/ref=sr_1_1_sspa?crid=2UGO7KJIO56NV&keywords=bnc+to+coax+adapter&qid=1658079945&sprefix=bnc+to+coax+adapter%2Caps%2C97&sr=8-1-spons&psc=1&smid=A3UQ7ESHSWYPHZ&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUExVDlaM1hESjhKNDc2JmVuY3J5cHRlZElkPUEwMjU1MTY5MUpaRkxVWExIT1JDVSZlbmNyeXB0ZWRBZElkPUEwNDMxMTcyMjNNU0VKNUJCODg5VyZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=

 

[Basjke]

This is what is available here.

อะแดปเตอร์ BNC Female เป็นชายสำหรับกล้อง CCTV BNC,อุปกรณ์เสริมกล้องสายโคแอ็กซ์เชียลต่อ1เมตร | Lazada.co.th

1. เหมาะสำหรับทีวีกล่องทีวีจอแอลซีดีระบบ CCTV. 2. วัสดุพิเศษให้ความทนทานสูงสุดและอายุการใช้งานยาวนาน. 3. ปลอดภัยเชื่อถือได้และมีประสิทธิภาพ. 4. ทนต่อสภาพอากาศทนทานและน้ำหนักเบา.BNC หà¸à¸´à¸à¸à¸²à¸¢à¸ªà¸²à¸¢à¸à¸°à¹à¸à¸à¹à¸à¸à¸£à¹à¸ªà¸³à¸«à¸£à¸±à¸à¸à¸¥à¹à¸à¸à¸§à¸à¸à¸£à¸à¸´à¸ BNC CONNECTOR...

www.lazada.co.th

 

[Basjke]

Should have posted this one, which has copper core.

https://www.lazada.co.th/products/i3085309965-s11348539820.html?

 

[Flintstone61]

do you need to make adapt to Coaxial cable on one end? are you a bit short with your cable? and you just need a little more? that one you linked should work fine.

 

[Basjke]

do you need to make adapt to Coaxial cable on one end? are you a bit short with your cable? and you just need a little more? that one you linked should work fine.

No it is to connect the camera to the Balun. I use a 50cm bracket to hang the camera, and cables are supposed to be hidden inside.

I just notice that in my listing is quoted 75 ohm, but they use 50 ohm coaxial lol

 

[sebastiantombs]

I'd just use a male/male cable with a barrel connector (double ended female).

 

[Basjke]

I'd just use a male/male cable with a barrel connector (double ended female).

Any special reason why you would use that, when male/female coaxial is available? Thanks

 

[sebastiantombs]

Just a habit out of convenience from the old days of ethernet on coax, 10Base2, and a lot of radio gear. I've got tons of barrel connectors laying around as well as crimping equipment for BNCs on RG58 and RG59.

 

[Basjke]

Just a habit out of convenience from the old days of ethernet on coax, 10Base2, and a lot of radio gear. I've got tons of barrel connectors laying around as well as crimping equipment for BNCs on RG58 and RG59.

Ok so I understand it is more based on personal reasons. I don't have all those tools, and although it will be doable, the male/female coax is easier to obtain.

Can I ask you, the cable I linked is IMO 50 Ohm instead of 75 Ohm as claimed in the listing.

Will that affect the quality of the signal with only 1 meter length?

 

[sebastiantombs]

Just from an engineering purist viewpoint, if it's a 75 ohm impedance source stick with a 75 ohm cable, RG59 or RG6. Any time you even put a connector in a cable you introduce an impedance mismatch, albeit a small one. A big one, going from 75 ohm to 50 ohm back to 75 ohm, can produce unexpected results due to the standing waves.

 

[Basjke]

I notice that all cameras, including the Dahua's I own, and all Balun's have 50 Ohm connectors.

Why is that? I would have expected that at least a reputable company like Dahua would use 75 Ohm connectors.