Radio Shack Amplified VHF/UHF Power Supply
Hello,
I have a Radio Shack Amplified VHF/UHF antenna RS 15-2181 that is missing the power supply/interface module. Does Radio Shack make all their adapters the same so I could use any adapter from any remote amplifier? Does anyone have a schematic for the adapter? What is the voltage that is injected onto the COAX? Could I inject the power directly into the amplifier in the antenna with a direct power connection (not through the coax)? The antenna is attic mounted so I don't have to worry about weather. Thanks for any input or ideas, Ted |
wrote in message oups.com... Hello, I have a Radio Shack Amplified VHF/UHF antenna RS 15-2181 that is missing the power supply/interface module. Does Radio Shack make all their adapters the same so I could use any adapter from any remote amplifier? Does anyone have a schematic for the adapter? What is the voltage that is injected onto the COAX? Could I inject the power directly into the amplifier in the antenna with a direct power connection (not through the coax)? The antenna is attic mounted so I don't have to worry about weather. Thanks for any input or ideas, Ted Catalog # 15-2181 Bidirectional "Swept-Wing" Antenna for Local TV Channels Owner's Manual http://support.radioshack.com/suppor...oc66/66676.pdf Detailed Parts List http://support.radioshack.com/suppor...oc68/68446.htm N |
Sorry,
I should have noted that I got the manual and the no parts list available message from the Radio Shack site. The manual only makes one small reference to the power adapter. I got more from looking at the 15-2185 product in the catalog that lists all the parts and shows how to connect the power adapter in the manual. Thanks, Ted |
wrote:
Hello, I have a Radio Shack Amplified VHF/UHF antenna RS 15-2181 that is missing the power supply/interface module. Does Radio Shack make all their adapters the same so I could use any adapter from any remote amplifier? Does anyone have a schematic for the adapter? What is the voltage that is injected onto the COAX? Looking at the physical configuration and specifications of their various products, my guess is that RS amplifier power injectors / supplies are interchangeable; @12VDC supply voltage. http://www.radioshack.com/product.as...5Fid=15%2D1170 Could I inject the power directly into the amplifier in the antenna with a direct power connection (not through the coax)? Don't know - is there a separate isolated dc input connection there? |
Thanks,
Now that I've looked at other configurations, I agree the DC input is likely 12VDC. I think I will keep an eye out for the injector at local garage sales. Hmmm, I wonder what the polarity of the DC is on the coax. Probably center conduct is +. No, there is no separate DC input connection at the antenna. I was thinking I'd just modify the amplifier to supply external power (not from the coax). The antenna is in the attic so it won't see real weather. I am assuming there is a choke between the center conductor of the coax and the power supply in the amplifier that allows the DC from the coax to pass but stops the RF. If I disconnect ths choke from the coax, the local amplifier power will not back feed the coax and damage anything on the receiving side. Then I can supply the DC between the open end of the choke and ground. I just noticed the cover of my R-S catalog. It says, "You've got questions. We've got answers." So then why am I still asking questions? ;-) Ted |
wrote in message oups.com... I just noticed the cover of my R-S catalog. It says, "You've got questions. We've got answers." So then why am I still asking questions? In what part of that slogan did you see them say they weren't stupid answers? N |
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