Some Myths about Coax

This Video is to explain some issues with the various types of Coax and how heat affects them

Category:

Education

Tags:

• CB
• Repair
• Coax
• cbrepairman

[scottishmale1970]

ah god what a load of bull what was the point just use good pl259s not ones with reducers and fold the braid back

[cbrepairguy]

@scottishmale1970 This is one of the most used methods of soldering coax so I don't know what all the bull is about. Yes IF you have the pl-259 that has the reduced end you can fold over the shield and screw it on but if you don't have the this is the way to do it and no, you don't want to damage the foam insulator or you have damaged the coax. Instead of being so critical why don't you join in and give more suggestions how to do it.

[7961640]

If you used the correct plug, you wouldn't need a reducer and, if you use the correct iron, you will have the appropriate heat and won't go anywhere near damaging what you keep calling "the foam".

I guess all the background noises and lack of preparedness kinda sets the tone.

A little knowledge is a dangerous thing ....

[cbrepairguy]

@7961640 WOW I guess you do have the proper equipment, a magic soldering iron that will get hot enough to stick to the plated connector and not hot enough to damage the "foam" or should I sway dielectric insulator.

[jsmitty1974]

lol @ the cell phone interference on the video. Must be an AT&T phone.

[cbrepairguy]

AT&T it is..

[TheLASERJAW]

Thanks for the video. I use only the RG-8 size coax and have used ONLY the large coax for 42 years. Putting on the standard pl-259 I fan the shield and fold back over the black jacket. I thread on the plug, trapping the shield between the plug and jacket. Screw down till tight. Trim back shield to the plug nice and neat. Solder the center conductor. Finish by filing down for a good fit and checking with an ohm meter for shorts, resistance and continuity. Plug in and go. 73 de Dino N0RJP.

[Phlloyd1]

Thanks for the tips.... newish to building and love the perspective. I recently about a tip whereby you cleaned the plating off the distal end of the reducer, and when you folded the shield back, you soldered the shield to the end. I'm sure that you'd have to be as careful with your heat lest you make that dielectric into butter.

(VA6PHL)

[fl0r1svdk]

@cbrepairguy you are yousing a iron that is to high of a watige + the wrong tip for this aplication

[helvis66]

Damn.... I thought my phone was jackin up the video. hahahha. hey its still a very informative video. thanks cbrepairguy. i dig your style



[freddo27]

Was having a discussion with someone recently about coax and pl259s. Some purists always solder the shell to the braid, even when a reducer is not used and the plug has screwed tightly onto the cable. The point I made was that the outer connection to the radio can never be better than the connection the plug outer makes to the radio, and that's never ideal.

All you have is a pressure connection when the outer is screwed onto the thread. At RF, it's quite poor.

[mikehannahs]

Very good vid man i learned a lot thanks:)

[26highstreet]

Tried the stuff with foam and metal shield, it made no difference from using cheap rg 58.. only use a 16 foot run so it makes no difference on 27mhz unless you have a run of 100 feet or more..

They key to any set up is to keep the signal path as short as possible, the shortest run of cable you can get away with.

My antenna is on the chimney stack, the coax goes through the roof, down through the attic, through the ceiling of my upstairs room shack and straight into the back of the rig