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Post Info TOPIC: Antenna question. Yep another one
harrydiculous


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Antenna question. Yep another one
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I've done a search & can't find an answer to this one.

I have a Digitech UHF/VHF Antenna. It's specs are - VHF(L) 45 - 86 MHz. VHF(H) 168 - 230 MHz & UHF 470-860MHz

I bought this unit some years ago; it could be >15 yrs ago and it worked. I've just tried to re-install it with the TV it was last used with & won't log any stations.

I did try it with another internal antenna to check & the TV logged channels from it. I also eliminated the internal cable as a problem by connecting both direct.

If I have to replace it, fine. But what spec's should one look for in a new unit?

And it's still for sale. (I thought that I'd better check). LT-3143. Mine doesn't have the rotation option. I did try moving it around.

Thanks

 

 

 

 



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PeterD


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Are you supplying 12 to 18 V DC power to the antenna. You need something like Kingray 14V DC 150mA Power Supply for Masthead Amplifier to power the amplifier in the antenna.



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PeterD
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Greg 1


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My Wynguard stopped working and I found it was one of the external coaxial cable joiner had corroded. New short coaxial cable all good.

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PeterD


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For those not in the loop, this is the antenna under discussion - Digitech LT-3143 TV Antenna



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PeterD
Nissan Navara D23 diesel auto, Spaceland pop-top
Retired radio and electronics technician.
NSW Central Coast.

 
Aus-Kiwi


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Another antenna . Ive had similar . Found the cable to antenna though roof to be the issue ., Used a little flexible conduit to seal, allow some flex on cable . As said if booster isnt working ? Wont work !!

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harrydiculous


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Thanks Guys. I went to Jaycar & bought another one and it's working OK now. It was a combination of a poor connection from the skin fitting which was intermittent and the lack of remote adjustment. (And the fitting on the aging TV was none too flash either.)

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Aus-Kiwi


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Adding a little graphite grease or elect jointing compound . Helps conductivity. Prevents corrosion.

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Possum3


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Are you using Digital TV and accessories not analogue - being over 15 years ago since last use would indicate you have analogue equipment

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PeterD


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An antenna is just an antenna. Forget all about this digital BS. All an antenna does is pick up electrical waves, it does not care what is or is not modulated onto the carrier. It just passes what it sees in the ether and passes it through to the receiver. It is the receiver that sorts out the type of signal, not the antenna. It does not matter whether the signal is broadcast radio, TV, data or SCADA, providing it is cut to work on the frequencies being received it will do its job. However, If it has an inbuilt amplifier and you are using it in an area where the signal is too strong the signal will block the amplifier (whether that signal is the one you wish to receive or is on an adjacent channel, in some towns like Broken Hill you have to switch the amplifier off.)

Digital antenna is just a deceptive term to con you into purchasing a new antenna if you had previously been using your antenna on analogue TV.

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PeterD
Nissan Navara D23 diesel auto, Spaceland pop-top
Retired radio and electronics technician.
NSW Central Coast.

 
Jaahn


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PeterD wrote:

An antenna is just an antenna. Forget all about this digital BS. All an antenna does is pick up electrical waves, it does not care what is or is not modulated onto the carrier. It just passes what it sees in the ether and passes it through to the receiver. It is the receiver that sorts out the type of signal, not the antenna. It does not matter whether the signal is broadcast radio, TV, data or SCADA, providing it is cut to work on the frequencies being received it will do its job. However, If it has an inbuilt amplifier and you are using it in an area where the signal is too strong the signal will block the amplifier (whether that signal is the one you wish to receive or is on an adjacent channel, in some towns like Broken Hill you have to switch the amplifier off.)

Digital antenna is just a deceptive term to con you into purchasing a new antenna if you had previously been using your antenna on analogue TV.

Well said Peter. biggrin 

However the length of the antenna bars needed have got smaller as the frequency went up. The old long bars are just not needed now.

Jaahn  



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Possum3


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PeterD wrote:

An antenna is just an antenna. Forget all about this digital BS. All an antenna does is pick up electrical waves, it does not care what is or is not modulated onto the carrier. It just passes what it sees in the ether and passes it through to the receiver. It is the receiver that sorts out the type of signal, not the antenna. It does not matter whether the signal is broadcast radio, TV, data or SCADA, providing it is cut to work on the frequencies being received it will do its job. However, If it has an inbuilt amplifier and you are using it in an area where the signal is too strong the signal will block the amplifier (whether that signal is the one you wish to receive or is on an adjacent channel, in some towns like Broken Hill you have to switch the amplifier off.)

Digital antenna is just a deceptive term to con you into purchasing a new antenna if you had previously been using your antenna on analogue TV.

 Peter I was referring to the equipment (TV) that it was tested with OP stated it was 15 years since used.



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Possum; AKA:- Ali El-Aziz Mohamed Gundawiathan

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PeterD


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duplicate post



-- Edited by PeterD on Sunday 2nd of May 2021 08:29:02 AM

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PeterD
Nissan Navara D23 diesel auto, Spaceland pop-top
Retired radio and electronics technician.
NSW Central Coast.

 
PeterD


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Possum3 wrote:
Peter I was referring to the equipment (TV) that it was tested with OP stated it was 15 years since used.

 Before you posted, the OP stated that everything was now working properly. He only said the antenna was replaced.



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PeterD
Nissan Navara D23 diesel auto, Spaceland pop-top
Retired radio and electronics technician.
NSW Central Coast.

 
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