Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




589 posts

Ultimate Geek
+1 received by user: 8


Topic # 83848 22-May-2011 14:21
Send private message

I did some freeview wiring a few months back, and use self amalgamating tape on the external F-Type connections.

I was up on the roof today, so I had a look too see how it was holding up so far. The tape on the aerial connector was exactly as the day I applied it:

 

But the tape on the amp connectors has spit and deformed:

 

What happened? The amp connectors are semi-enclosed, so I would have expected them to be fine. The aerial connector is completely exposed to UV etc., and it's perfect.

The F-Type connectors were loaded with silicone grease, and I thought the tape might have reacted with that, but the F-Type connector used for the aerial was exactly the same...

Create new topic
4474 posts

Uber Geek
+1 received by user: 1289


  Reply # 472470 22-May-2011 17:02
Send private message

UV perhaps?

Looks like the amp has more sun on it...

Is your tape UV proof?

25669 posts

Uber Geek
+1 received by user: 5415

Moderator
Trusted
Biddle Corp
Subscriber

  Reply # 472520 22-May-2011 18:03
Send private message

Birds love the stuff, could well be they've chipped away at it.

 
 
 
 


BDFL - Memuneh
59180 posts

Uber Geek
+1 received by user: 10414

Administrator
Trusted
Geekzone
Subscriber

  Reply # 472552 22-May-2011 19:06
Send private message

Can.t be birds, or UV, seeing that's covered. The cover is to the left side on hinges.




1875 posts

Uber Geek
+1 received by user: 113


  Reply # 472585 22-May-2011 19:46
Send private message

Looks like heat damage.
That looks like a cast metal amp box which would get pretty hot during the day while the antenna box looks like plastic and the tape is not contained in the box like the amp connectors.

6433 posts

Uber Geek
+1 received by user: 1569


  Reply # 472607 22-May-2011 20:38
Send private message

gremlins.

gotta be gremlins.

805 posts

Ultimate Geek

Trusted

  Reply # 472631 22-May-2011 21:29
Send private message

Can't say I have ever seen that before. I'm going to have to go with heat too. It appears glossy where it has broken apart. How tight did you pull the tape when you applied it?



589 posts

Ultimate Geek
+1 received by user: 8


  Reply # 472677 22-May-2011 22:34
Send private message

Yes the amp and both it's taped connections were closed inside that hinged plastic box. No birds or direct UV.

I guess heat might have done it... Do those amps really get that hot? It wasn't hot when I touched it, but there were no receivers running off it at the time.

I stretched the tape to 75%, or whatever was written on the package.

1875 posts

Uber Geek
+1 received by user: 113


  Reply # 472684 22-May-2011 22:45
Send private message

Never underestimate the heating effect of the sun.
The metal box may be enclosed inside a plastic box but I'll bet it still gets pretty hot.
Certainly hot enough inside the plastic box I would think to break down the tape if its stretched 75%.
Try putting a remote temp sensor in the box and see how hot it gets.

1211 posts

Uber Geek
+1 received by user: 147


  Reply # 472685 22-May-2011 22:57
Send private message

We used to cover the self amalgamating tape with denso tape to make a weather proof seal - might be worth a go

3217 posts

Uber Geek
+1 received by user: 390


  Reply # 472727 23-May-2011 08:11
Send private message

NonprayingMantis: gremlins.

gotta be gremlins.


+1
Other than gremlins, it does look like heat to me.

148 posts

Master Geek


  Reply # 472731 23-May-2011 08:20
Send private message

I see that the other connection in the box is ok though which means the heat has been pretty selective which I don't quite understand myself.

On mastheads, should there be a 75 ohm blank on any open outputs/inputs?

6508 posts

Uber Geek
+1 received by user: 521

Trusted

  Reply # 472779 23-May-2011 09:09
Send private message

Heat for sure, but not from the sun as both connections would have been affected.

Good news is that with the cover across and the use of gel filled connectors you probably don't need the tape anyway.



589 posts

Ultimate Geek
+1 received by user: 8


  Reply # 472853 23-May-2011 10:53
Send private message

mthand: I see that the other connection in the box is ok though which means the heat has been pretty selective which I don't quite understand myself.


No, they both burst. The other split is just facing away.

mthand:On mastheads, should there be a 75 ohm blank on any open outputs/inputs?



Yes, I'd like to know this too. 

258 posts

Ultimate Geek
+1 received by user: 8

Technical Solutions Aust

  Reply # 472928 23-May-2011 13:00
Send private message


mthand:On mastheads, should there be a 75 ohm blank on any open outputs/inputs?


Yes, I'd like to know this too. 


Yes, Ideally...... is it 100% necessary... probably not

1943 posts

Uber Geek
+1 received by user: 127

Trusted

  Reply # 473094 23-May-2011 17:45
Send private message

If the Amp doesn't generate that much heat, it might still get hot since any heat is contained in the plastic enclosure. Paint the box white to reflect more of the sun?




Qualified in business, certified in fibre, stuck in copper, have to keep going  ^_^

Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

UAV Traffic Management Trial launching today in New Zealand
Posted 12-Dec-2017 16:06


UFB connections pass 460,000
Posted 11-Dec-2017 11:26


The Warehouse Group to adopt IBM Cloud to support digital transformation
Posted 11-Dec-2017 11:22


Dimension Data peeks into digital business 2018
Posted 11-Dec-2017 10:55


2018 Cyber Security Predictions
Posted 7-Dec-2017 14:55


Global Govtech Accelerator to drive public sector innovation in Wellington
Posted 7-Dec-2017 11:21


Stuff Pix media strategy a new direction
Posted 7-Dec-2017 09:37


Digital transformation is dead
Posted 7-Dec-2017 09:31


Fake news and cyber security
Posted 7-Dec-2017 09:27


Dimension Data New Zealand strengthens cybersecurity practice
Posted 5-Dec-2017 20:27


Epson NZ launches new Expression Premium Photo range
Posted 5-Dec-2017 20:26


Eventbrite and Twickets launch integration partnership in Australia and New Zealand
Posted 5-Dec-2017 20:23


New Fujifilm macro lens lands in New Zealand
Posted 5-Dec-2017 20:16


Cyber security not being taken seriously enough
Posted 5-Dec-2017 20:13


Sony commences Android 8.0 Oreo rollout in New Zealand
Posted 5-Dec-2017 20:08



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.