Steve,
The prodlen Cable was made in NJ The 50 ohm 7/8 in cable was orginially
made for the NRC.
Nucular Regulator Commision . not sure how much was used in commercials
transmission.
The spools were rejected by the NRC not for impedance but for failed gas
permability test
Wayne W3EA ,
Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10
From: Steve Maki<mailto:lists@oakcom.org>
Sent: Monday, September 19, 2022 3:56 PM
To: towertalk@contesting.com<mailto:towertalk@contesting.com>
Subject: Re: [TowerTalk] Help wanted: Removing Prodelin hardline jacket
Just had a thought - the right pizza cutter wheel might work for the
lengthwise cut!
-Steve K8LX
On 9/19/2022 11:50 AM, Steve Maki wrote:
> Absent a prep tool made for the cable, you're stuck with using a utility
> knife with a NEW blade. After you score the jacket with your pipe
> cutter, make the lengthwise knife cut slowly using a fair bit of
> pressure. It will take a few passes. I wouldn't worry too much if the
> shield gets nicked a little on the lengthwise cut. You do NOT want it to
> be nicked by the pipe cutter though. Jim's suggestion of heating the
> jacked might help some. If you only need to remove a 1/2" of jacket, a
> good technique is to simply use downward pressure (a ton) with a rocking
> motion of the blade.
>
> I thought I'd had my hands on just about every hardline cable known to
> man, but yours is the 2nd recent reference to Prodelin cable. I've never
> heard of it. Prodelin was a big name in the satellite earth station
> industry for many years. Most cable used in that segment was 75 ohms.
> But early on when the first downconversion happened inside the building,
> they used 50 ohm cable to transport the 4 GHZ LNA output. Usually it was
> mere RG-8, but on long runs it would be hardline.
>
> -Steve K8LX
>
> On 9/19/2022 10:43 AM, Tyler Stewart via TowerTalk wrote:
>> I’ve got a bunch of this old cable I acquired through FRC that’s been
>> buried for 25 years and now I want to use it!
>> It’s about 1-1/4” with a spiral aluminum shield. And really tough
>> plastic jacket. I don’t know if it’s age related, but I’m having a
>> heck of a time trying to remove it. I used a pipe cutter for the
>> initial scoring, but otherwise just hacking at it with a utility
>> knife tryin not to gouge the aluminum shield.
>> Suggestions?
>> 73, Ty K3MM
>>
>>
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