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Teflon insulation RG-400 and RG-142 coax jumpers are available

Years ago I acquired a quantity of 1/4 inch Heliax. I use RG59 adapters for PL connectors and lightly solder the cable to the tip of the adapter. Screw into the PL connector and solder the center

Me, too. (It astounds me how some guys who experimented with ferrite and powdered-iron balun and transformer cores awhile back used so much RG-400 for most of them! Where did they find the cash to buy

Me, too. (It astounds me how some guys who experimented with ferrite and powdered-iron balun and transformer cores awhile back used so much RG-400 for most of them! Where did they find the cash to buy

The problem with RG-142 is that the solid center conductor is easy to displace when the coax is bent, especially sharp bends, and particularly short lengths such as less than several feet. It's best

Holy crap those jumper are over $100 each. Too rich for me. I will stick with RG8X and my stock of PL-259s. This has worked for me many years now. I realize that it should not be used for 1500 watts

Correction to my previous post. I do not use RG-400 jumpers, I use RG-142 coax jumpers. Both RG-400 and RG-142 have similar specs with the exception of RG-142 has a solid center conductor and RG-400

Lots of premade RG-400 cables are at DXE – like this: https://www.dxengineering.com/parts/dxe-rg400r006 Search for RG-400 73 Tim K3LR @ DXE HQ Sent: Monday, November 11, 2024 1:09

I buy RG-400 jumpers for all my inside the shack interconnections. Entering the shack, I have a mix of N connectors for Heliax LDF4 Superflex and PL-259 connectors for RG-213 coax for antenna

Yes that RG-400 is great and can make sharp bends if need be. Bob W4JFA [email protected]> wrote:

I use rg400 coax. Same size as rg58, but teflon insulated and ok for 3kw, or even more on ssb. Not cheap... Thanks des.

I only ever heard Seymour on 20m.? He was a real character.? ?He was stupid loud here, with his yagi pointed my way. Those mile long leads will screw up the coil values a bunch.... on those

RG8X might become limp with 1.5 kw CXR /? data modes, FT-8 / FM.

I found this. Bob W4JFA [email protected]> wrote:

I have used RG8X for years without a problem. They are all short and losses immeasurable. The cables out to my antennas from the shack are all RG8 or something like that. Mine have handled 1500 watts

Hello, In HF service, when running interconnect coax cables from an amplifier outbound, I have always used RG-213 or equivalent from the amp to whatever accessories I was using at the time such as a

Hello, I currently have a Dentron clipperton L that I have been tinkering with and I know that some of the last models had a tuned input that came with the amp. I’m looking for a manual/schematic

If you have any teflon sleeving, put an inch length over the wire where it goes through the grommet. If you only have teflon sheet, cut an inch square and wrap it around the wire through the grommet.

Thanks for the kind offer, Tom. A trusted friend and amp builder suggested a simpler fix..toss the feed through & replace it with a rubber grommet, solder the wire directly to the glitch resistor.

Thanks Jim, I agree with your assessment. I replaced the feed through with a rubber grommet and soldered the HV wire directly to the glitch resistor. That seems to work fine business. Thanks, Robin