DIY UHF/VHF Combiner?
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Combining two RF signals, most times a splitter would work for this purpose. You could add some hi-pass and/or lo-pass filters if necessary.
Neither station ch 7 and ch 36 have their final antenna configuration yet, the promise is the Aug 1 to Sep 1 time frame. I tried a splitter but too much loss for now. I am thinking of opening the splitter and converting it into a tee to see what happens. I think a splitter may work after they optimize, I just wanted to play with it a bit in the interim.
If all you're trying to do is combine input from a VHF antenna and input from a UHF antenna, you're using the wrong tool for the job. You want a UVSJ, not a standard splitter/combiner. A UVSJ should have about 0.5 dB of loss compared to something like 3.5 dB for a splitter.
Is this true for all areas, or just yours? Most of the complaints I have read about are poor reception for channel 7.
It would be nice to hear that their is a problem across all areas and a possible solution is being worked on.
Well, I understand what you're saying about the fun factor, but this will take as long as a bookcase to build, and cost nearly as much in parts as a finished unit would cost. For a $3 part with $7 shipping, the piece of mind that it will actually work is worth more than the bragging rights.
One of my flying arrow UHF antenna has a VHF passthrough. You connect the wire (300omh) from the VHF antenna to the in on the UHF antenna, then from the out on the UHF antenna to the rest of your system... i.e. to a preamplifer or balun
Check here
http://www.wade-antenna.com/Wade/UHF Antennas.pdf
for their CYD and SFA series.
Check here
http://www.wade-antenna.com/Wade/UHF Antennas.pdf
for their CYD and SFA series.
I gave up and decided to order one for 79 cents but discovered that shipping was $7.99. I can afford it but it's silly to pay that when actual cost is less than a dollar. My latest thought based on Larry1's post is to open my old Radio Shack plastic antenna with a VHF dipole on the back and use its combiner.
I may open my leftover Dish 301 receiver to see if I can disable the power hungry circuits and use it as a remote controlled AB switch.
I may open my leftover Dish 301 receiver to see if I can disable the power hungry circuits and use it as a remote controlled AB switch.
I gave in to this one at $3.48 w/shipping DIY seemed a lost cause. 75 OHM COMBINER SPLITTER IN OUT FOR VHF & UHF ANTENNAS - eBay (item 250450772020 end time Jul-23-09 09:23:49 PDT)
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I installed the UVSJ prior to the amp and its insertion loss dropped me one or two bars on signal strength for channel 36. I can't receive channel 7 until WSPA installs a new tower so I won't know until August or September. Chennel 36 is going to replace its antenna, maybe at a higher elevation in the same time frame so that may add bars. It's now wait and see, which I am not good at.
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