[TowerTalk] Liquid Electrical Tape?

[Patrick Greenlee]

In the olden days I used to use Glyptal (a high voltage resistant 
lacquer) to seal the edges of multi-layered glass covered narrow band UV 
filters.  The filters came in 4x4 inch standard size.  I had them sawn 
into 3/4 by 3/4 inch pieces and then had to seal the edges against 
moisture intrusion as the filters were used in medical equipment used in 
a moist environment.  I never had a failure relating to the use of the 
Glyptal as a moisture barrier.

I would think that Glyptal would do a good job in sealing things against 
moisture intrusion provided the area treated with it did not flex so 
much as to significantly stress the flexibility of the Glyptal.

Anyone out there have personal experience with Glyptal as a water tight 
sealant?

Patrick        NJ5G

On 4/24/2019 8:14 AM, Jon Pearl - W4ABC wrote:
> Hi Keith,
>
> I've used 2228 all by its lonesome and it's pretty impressive. Tape, 
> 2228, then tape again might be the ticket for an even longer, long 
> term solution:
>
> http://www.w4abc.com/Scotch2228.html
>
>
>
>
> 73,
>
>
> Jon Pearl - W4ABC
>
>
> On 4/2/2019 9:46 PM, Keith Dutson wrote:
>> I have heard the best is 3M Scotchkote. However, I recently inspected a
>> coax connection on the outdoor 2 meter cable running from repeater to
>> antenna (on top of 500 foot building).  It had been slathered with
>> Scotchkote after sealing with two wraps of 88, one wrap of 2228 
>> fusion tape
>> and two final wraps of 88.  It appears the Scotchkote was useless in the
>> harsh outdoor environment at 500 feet.  It was dry and balled up, 
>> exposing
>> the 88 underneath.  This connection was inspected because of high SWR 
>> at the
>> duplexer bottles.  The problem was discovered to be the N barrel 
>> connecting
>> two runs of LDF50A.  The first wrap of 88 with sticky side out made the
>> removal a snap.
>>
>> 73 Keith NM5G
>>
>>
>
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