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Old 04-09-2016, 11:29 AM   #81
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Leon, using something like that bulkhead connector is what I was thinking, and to have it install in the same waterproof hatch as a bunch of other connectors. I think one single box would look better than a bunch of separate connectors.

Regardless, I will definitely take up your suggestion of consulting with JavaTech before I do anything. Thanks for bringing them to my attention.

Could you not replace the inlet Reace installed with something like you mentioned?
I think I could -- perhaps something like those Bullfinch utility points you mention. I don't know if the satellite connector would work or not. I am sure Mike Lewis knows more about this stuff than I do, but my understanding is that the Jefa tech stuff is 50 ohm (I know that is what my antenna is), while the TV cabling is 75 ohm. My recollection is that 75ohm cable/connections aren't good for things that both transmit and receive, like a wifi repeater antenna. Mike,or someone who knows more about radio signals, could you comment on this?

Bullfinch is a UK company -- do you know if they ship to the US, or even Canada?
Thanks for pointing them out.
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Old 04-09-2016, 12:04 PM   #82
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Bullfinch is a UK company -- do you know if they ship to the US, or even Canada?
Thanks for pointing them out.
They do not offer a shipping option outside of the UK, but I just sent them an email. Regardless, there is are eBay resellers that will ship to Canada.

Here is one on .ca
http://stores.ebay.ca/Car-Parts-In-M...sid=1193121968

And the same one on .com
clutch kit, brake disc items in Parts In Motion store on eBay!
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Old 04-09-2016, 02:37 PM   #83
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I am sure Mike Lewis knows more about this stuff than I do, but my understanding is that the Jefa tech stuff is 50 ohm (I know that is what my antenna is), while the TV cabling is 75 ohm. My recollection is that 75ohm cable/connections aren't good for things that both transmit and receive, like a wifi repeater antenna. Mike,or someone who knows more about radio signals, could you comment on this?
The characteristic impedance is not related to whether or not the signal is bi-directional; however, it is true that 75 ohm is commonly used in video applications while 50 ohm is common in two-way radio applications. The important part is simply that all parts - connectors, cable, and the electronic devices - match in impedance.
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Old 04-09-2016, 09:06 PM   #84
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What effect does an impedence mismatch have on TV reception? Does it weaken the signal via internal reflection, or could it also damage equipment? It's something I'd never do with ham or cellular equipment, but with TV reception I wonder if you can get away with having 50-ohm and 75-ohm components on one TV antenna line. I have been told that it's not really a big deal, but I'm doubtful.

I'm expecting a vigorous response from the engineers on the forum.
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Old 04-09-2016, 10:08 PM   #85
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What effect does an impedence mismatch have on TV reception? Does it weaken the signal via internal reflection, or could it also damage equipment?
It will certainly reduce transmission by reflection. I would only expect damage with a transmitter, but I'm only guessing about that.

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It's something I'd never do with ham or cellular equipment, but with TV reception I wonder if you can get away with having 50-ohm and 75-ohm components on one TV antenna line. I have been told that it's not really a big deal, but I'm doubtful.
I'm doubtful, too.
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Old 04-10-2016, 09:22 AM   #86
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As mentioned above, this is what I am considering.
Jim - where did you find that blank backed hatch?
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Old 04-10-2016, 09:51 AM   #87
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Jim - where did you find that blank backed hatch?
It is from Nuova Rade, a European company (why do they get all the good stuff?). I found it when looking for options for outdoor showers, but the selection to North America seems slim. There s THIS larger model on eBay, but that is too big for my likinly, though maybe it could double to hold cables?

Utility Hatches Oval 120x210mm

Nuova Rade has lots of good options for the exterior, though most are designed for marine use, they can easily be adapted to our trailers.

http://www.nuovarade.com/products.php?categoryId=36
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Old 04-10-2016, 09:59 AM   #88
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There are also tons of marine hatches out there that are just the door itself, and one could easily make an inside box to work for a bulkhead.
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Old 04-10-2016, 11:24 AM   #89
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It's called a Flag Pole to Go 20' I got it cheaper on Amazon.
[URL]https://flagpolesetc.com/flagpoles/telescoping/flagpole-to-go/flagpole-go-portable-telescoping-aluminum-flagpole-20-ft-fp-21[/URL

The holder requires a rubber plug to get the pole centered in the holder. I picked that up at Lowe's <$5. Lemme see if I can find the information.
Donna, any chance you could snap a quick pick of the "rubber plug?" I'm having a hard time imagining it (maybe not enough coffee yet). No rush and THANKS!
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Old 04-10-2016, 12:55 PM   #90
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Donna, any chance you could snap a quick pick of the "rubber plug?" I'm having a hard time imagining it (maybe not enough coffee yet). No rush and THANKS!
Oh crumb, I forgot. Lemme fire up the ole laptop...
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