compression BNC connectors?

Status
Not open for further replies.

crucialcolin

Member
Joined
Sep 9, 2008
Messages
178
has anyone seen any Coax termination Compression Tools and fittings that work with RG-58 cable?

I currently have a Maxrad BGBN Black Magnet Mount With BNC Connector that has the end of the cable processed with a twist on BNC Terminal Connector which I need to reprocess due to signal leakage. I come from cable TV coax and know that compression based connections are the best way to go over crimping and even worse the twist on type connectors that I'm currently using ;)

I've had an extremely hard time finding anything that works with RG-58/U which my mount has for coax.
 

crucialcolin

Member
Joined
Sep 9, 2008
Messages
178
Theres one here GEM Electronics BNC Compression Seal Connectors
its a few down: the GEM-302-8240CSTP

I wish they made NMO mobile magnet mounts with thicker coax. Besides differences in ohms. I guess you need 50ohm for an antenna? It seems to me like it would be better to use RG-6. There's all kinds of BNC terminals and tools for those
 

tonsoffun

Senior Moderator
Database Admin
Joined
Dec 19, 2002
Messages
1,503
Location
Central Ontario
Theres one here GEM Electronics BNC Compression Seal Connectors
its a few down: the GEM-302-8240CSTP

I wish they made NMO mobile magnet mounts with thicker coax. Besides differences in ohms. I guess you need 50ohm for an antenna? It seems to me like it would be better to use RG-6. There's all kinds of BNC terminals and tools for those
Hehe, thats the same one I listed above with my edit:cool:
 

DPD1

Member
Joined
Jul 24, 2005
Messages
1,994
I don't get how they can say it's weatherproof when it's a BNC.
 
K

kb0nly

Guest
I don't get how they can say it's weatherproof when it's a BNC.
I think they are referring to the weatherproof seal between the connector body and the coax, not the actual connector onto the radio or antenna.

Its like the F connectors, they call those weatherproof but if you read the spec sheets closely it says the connector needs to be sealed to the item its connecting to. I usually slide a piece of adhesive lined heatshrink tubing over at the antenna or whatever its hooking up to if its outside and exposed.

How does the center pin get terminated on them, or does the center conductor just sit loosely inside the center pin like a cheapo twiston connector??

I prefer crimp-on BNC's, or if you don't have the crimper get clamp on BNC's, then you can solder on the center pin before assembly.
 

n5ims

Member
Joined
Jul 25, 2004
Messages
3,799
The ones I used (for RG-6) had small barbs inside the tip that faced inwards. You could easily push the cable in, but they would grab the wire more and more as you pulled it out so a good connection would be made. A good connection was made by fully inserting the cable and pulling it back out until you felt the barbs grab (1/16" - 1/32" or so) and then crimp. This did make them single insertion (or even single attempt actually) connectors since the barbs would be damaged enough if you could get the cable back out that the connector wasn't mucn better than those cheapo twiston ones you mentioned for any additional attempts.

We had both BNC and RCA versions that worked this way. They weren't cheap, but did the job very well.
 

fineshot1

Member
Joined
Sep 17, 2004
Messages
2,496
Location
NJ USA (Republic of NJ)
has anyone seen any Coax termination Compression Tools and fittings that work with RG-58 cable?

I currently have a Maxrad BGBN Black Magnet Mount With BNC Connector that has the end of the cable processed with a twist on BNC Terminal Connector which I need to reprocess due to signal leakage. I come from cable TV coax and know that compression based connections are the best way to go over crimping and even worse the twist on type connectors that I'm currently using ;)

I've had an extremely hard time finding anything that works with RG-58/U which my mount has for coax.
I went for the one below but Paladin also offers a similar tool and dies. Its a pricey set but once
you have it and all the dies needed your set for life and the tool works fantastic. You may be able
to find some of these on ebay(Paladin or some other brands).

RF Industries Crimp Tool

RFI

RF Industries

RFA-4005-020 Crimp Tool Kits and Dies

RFA-4005 Tool & 2 dies for most popular cables in foam lined plastic case.
The RFA-4005 Kit contains: (1) RFA-4005-20, Crimp Tool Handle; (1) RFA-4005-01, Crimp Die Set for RG-58/U, RG-59/U,RG-142/U,RG-8/X, LMR-195, LMR-200, LMR-240 & Proflex Coaxial Cables; (1) RFA-4005-02, Crimp Die Set for RG-8/U, RG-213/U, LMR-400 & Belden 9

RFA-4005-100 has one RFA-4005-20 crimp tool and one RFA-4005-01 die. Packaged in a blue, durable, padded storage case.

RFA-4005-200 includes one RFA-4005-20 crimp tool and one RFA-4005-02 die. Packaged in a blue, durable, padded storage case.

RFA-4005-300 contains 1 crimping tool frame plus the RFA-4000-02 die set packaged in a cardboard box.

RFA-4005-400 contains 1 crimping tool frame plus the RFA-4000-01 die set packaged in a cardboard box.

RFA-4006, the Deluxe Kit, is supplied with two crimping tool frames and the same two unique die sets found in the RFA-4005.

Standard Die Sets - RFA-4005-01 & RFA-4005-02:

RFA-4005-01 die set is used to crimp RG58/U, RG59/U, RG142/U, RG8X, Proflex and various video cables. Cavity dimensions: .052", .068", .100", .213" & .255". The .052" cavity is unique and used to crimp the center pins of the RFU-600-1 or AMP's 2266-001.

RFA-4005-02 die set is used to crimp RG8/U, RG213/U, RG214/U, and Belden 9913 cables. Cavity dimensions: .100", .128" & .429". The .128" cavity crimps the center pin on Belden 9913 cable. This is the only die set with a .128" cavity for 9913 pins.

RFA-4005-04 DIE SET FOR RFA-4005, CRIMPS RG-58,-59,-62/U, CP-88, CP-89
The RFA-4005-04 Precision Die Set is used to crimp RG-58,-59,-62/U, CP-88, CP-89 cables. Hex Cavity Dimensions: .228, .068, .305

RFA-4005-05 DIE SET FOR RFA-4005, CRIMPS RG-8,-11,-213
The RFA-4005-05 Precision Die Set is used to crimp RG-8, RG-11, RG-213, coaxial cables. Hex Cavity Dimensions: .155, .184, .215

RFA-4005-06 DIE SET FOR RFA-4005, CRIMPS RG-59,-6, & F-TYPE (CATV)
The RFA-4005-06 Precision Die Set is used to crimp RG-59, RG-6, & F-TYPE (CATV) coaxial cables. Hex Cavity Dimensions: .255, .324, .354

RFA-4005-08 DIE SET FOR RFA-4005, CRIMPS RG-59, BELDEN 8281
The RFA-4005-08 Precision Die Set is used to crimp RG-59/U and Belden 8281 coaxial cable. Hex Cavity Dimensions: .324, .255, .068, .042

RFA-4005-09 DIE SET FOR RFA-4005, CRIMPS RG-174, -188, -316, MINI 59
The RFA-4005-09 Precision Die Set is used to crimp RG-174, RG-188, RG-316 and Mini-59 coaxial cable. Hex Cavity Dimensions: .178, .068, .130

RFA-4005-10 DIE SET FOR RFA-4005, CRIMPS RG-8, -11, -213, N SERIES
The RFA-4005-10 Precision Die Set is used to crimp RG-8, RG-11 and RG-213 coaxial cable. Hex Cavity Dimensions: .080, .10, .429

RFA-4005-14 DIE SET FOR RFA-4005, CRIMPS BELDEN 9913, LMR-400; .429, .118 HEX. This die set for RFA-4005 crimps Belden 9913, LMR-400 and most .4 diameter cables. This set contains .429, .118 hex crimps.
 

DickH

Member
Joined
Mar 12, 2004
Messages
4,069
... BNC Connector[/url] that has the end of the cable processed with a twist on BNC Terminal Connector which I need to reprocess due to signal leakage. I come from cable TV coax and know that compression based connections are the best way to go over crimping and even worse the twist on type connectors that I'm currently using ;) ...
Although I don't know how you can verify there is "signal leakage", if it is a real concern to you, I would use a standard soldered BNC.
 

rescue161

KE4FHH
Database Admin
Joined
Jun 5, 2002
Messages
3,078
Location
Hubert, NC
I don't get how they can say it's weatherproof when it's a BNC.
The BNC male connectors as well as the Type N connectors have a rubber seal inside of them that butts up against the female connector. Once they are connected, they make a weatherproof seal.
 

lmrtek

Active Member
Joined
Feb 11, 2009
Messages
535
The ONLY crimp connection I trust is the Times Microwave crim connectors with LMR

Twist on connectors and the like are just a temporary fix till a REAL connector can be installed

I too came from the world of RG-59 RG-6 and RG-11, but when you are TRANSMITTING through a connection, it MUST be a solid and reliable connection or you may be paying for a $100 PA module.
 

crucialcolin

Member
Joined
Sep 9, 2008
Messages
178
yeah solid and reliable is the way to go. In fact I don't like how thin the coax is on all the NMO mag mounts. I'm wishing there was something out there with at least RG-59 but even better would be RG-6. Even though I'm only using about 12 feet of cable every chance to reduce possible signal loss would be worth it as in the end it makes for better reception.
 

DPD1

Member
Joined
Jul 24, 2005
Messages
1,994
The BNC male connectors as well as the Type N connectors have a rubber seal inside of them that butts up against the female connector. Once they are connected, they make a weatherproof seal.
Yeah, but I doubt quick connect design is going to hold the barrel against there tight enough to make a good seal. Maybe TNC would.
 

AK9R

Lead Wiki Manager
Super Moderator
Joined
Jul 18, 2004
Messages
6,366
Location
Central Indiana
In fact I don't like how thin the coax is on all the NMO mag mounts.
I usually buy Larsen when I need a mag-mount (which is not often since I use permanent mounts). Larsen uses the same types of RG-58 on their mag-mounts that they use on their permanent mounts. At the short lengths typically used on these mounts, RG-58 does not present a tremendous amount of loss.
I'm wishing there was something out there with at least RG-59 but even better would be RG-6.
You won't see either RG-59 or RG-6 on a mag-mount intended for the land mobile radio market because those are 75 ohm coaxes. Most LMR and amateur radios expect a 50 ohm impedance, not 75. The closest available coax that is both 50 ohm and the same diameter as RG-59/RG-6 is RG-8X or Times LMR-240.
 
K

kb0nly

Guest
yeah solid and reliable is the way to go. In fact I don't like how thin the coax is on all the NMO mag mounts. I'm wishing there was something out there with at least RG-59 but even better would be RG-6. Even though I'm only using about 12 feet of cable every chance to reduce possible signal loss would be worth it as in the end it makes for better reception.
Then buy a bare NMO mount and install whatever coax you want on it, simple... If you don't have a coaxial crimper and the right size die for the NMO's braid connection then get a solder type NMO. It has a sleeve that you solder the braid too and then solder the center and snap on a little cover and your done.
 
Status
Not open for further replies.
Top