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Author Topic: DB-58 coax cable information needed.  (Read 760 times)
W1JKA
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Posts: 1619




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« on: April 13, 2013, 02:33:20 AM »

  I recently picked up some coax which was only labled [Decibel products Inc. DB-58].I checked the internet for info and could only find that Decibel products made or makes high end vhf/uhf antennas but no info on this type of coax. I would like to know if this is suitable for use with low power ( QRP) jumpers,feedline etc.Thanks
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G4IJE
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Posts: 240




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« Reply #1 on: April 13, 2013, 03:11:40 AM »

The "58" would suggest that it is similar to RG58/U - or at least that's what the manufacturer is trying to imply. What's the OD? Is it tinned or copper braid? Stranded inner? What does the dielectric look like? How does the braid density compare to genuine RG58/U? Strip some back and compare it with photos of RG58/U. Some cheaper copies of coaxial cable use less braid than the genuine part and are a bit more lossy, but may be perfectly usable for modest runs at HF.
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W1JKA
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« Reply #2 on: April 13, 2013, 05:13:13 AM »

Re: G4IJE
    Thanks for reply.Diameter is 3/16 in.I picked up several lengths 2-10 ft. all with 239 connectors attached so have not checked braid or center conductor yet.Person who had these had a vhf/uhf radio communication repair business.I thought they may be similar to RG but the DB threw me off. I'll hook up a couple today and see what happens.
« Last Edit: April 13, 2013, 05:22:16 AM by W1JKA » Logged
G4IJE
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« Reply #3 on: April 13, 2013, 09:02:57 AM »

You could check for losses with a power/swr meter and a dummy load but from your description they will probably work fine for jumpers etc at moderate power levels on HF.
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NR4C
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Posts: 306




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« Reply #4 on: April 16, 2013, 07:20:42 AM »

all with 239 connectors attached

SO-239 on a cable, that's an odd arrangement.  Maybe you are confusing this with the PL-259?

...bill  nr4c
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W1JKA
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« Reply #5 on: April 16, 2013, 07:40:05 AM »

Re:NR4C
     You are correct,just another one of my senior moments,guess I was depending to much on Spell Check to put in the correct designation. Embarrassed
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W9GB
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Posts: 2600




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« Reply #6 on: April 16, 2013, 07:54:54 AM »

Female UHF (SO-239 in-line) connectors are manufactured for RG-58/U coax cable.

RF Industries RFU-527, crimp.
http://rfsearch.rfindustries.com/ShowProduct.asp?classID=20&productID=5826

http://www.rfcoaxconnectors.com/pdf/RFU-527_a.pdf


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