The aluminium tubes that sits to the plastic tube are tuned to about 400Mhz and so are so vast in sizing that it perhaps addresses a hundred MHz wide frequency vary. The X features are tuned for VHF-Air and VHF 150-170MHz.
i did not return throughout the thread to determine what freqs your public basic safety is on, but, assuming it's during the seven-hundred-850 MHz array, how can it be undertaking selecting These up? any more distant municipalities the skin antenna is buying up, vs/ the original whip?
Ubbe said: A dipole will work better than a discone or an Omni-X at 800MHz. Try and set a single up once more, as being a take a look at, and with coax that doesn't attenuate an excessive amount of at the lenght and frequency employed.
"Been applying my new OmniX for every week or so on my scanner, and it’s awesome. I’m getting distinct reception on sources from South San Francisco to Santa Cruz and also need to attenuate a few close by transmitters."
- More importantly, reception is signficantly enhanced equally concerning distance and clarity on all 3 bands this product is suitable for.
N6BY claimed: Thats wonderful. When you are like me you will need just one for TV and a person for scanning on your roof. I have received 450 and 900 MHz vertical Yagis mounted on the rotor on my roof for scanning (Together with a log periodic OTA antenna).
I Individually would enjoy to keep producing exceptional shopper amount stuff that a lot of other businesses don't need to bother with. I am engaged on constructing our personal anechoic chamber for testing, and i have also been working on some other new things, like an SBS-1 model. But the longer term relies on irrespective of whether the consumer subject is feasible enough to support this.
N5XZS said: I acquired Sam Clubs and Walmart nearby be can't discover their freq, almost certainly in UHF band much more than the rest.
You could Establish your very own diplexer when you gut out an inexpensive metallic box, just like a $five CATV splitter, and solder jointly a couple of coils and capacitors for $5 and use the numerous on the internet web primarily based calculators to find the values and how to link it alongside one another.
I use both the Omni X in addition to a discone, each perform very properly. The coax on both equally antennas is LMR 400. I would even drop tgagrand by an increased type even so the stiffness with the cable and price is significant. You should use superior cable if monitoring up inside the 800mhz array. When I purchased my discone, it came with 60' of CRAPPY slender cable.
Nope! Nevertheless can not get it with out lots of static. It sucks for the reason that I used to be able to hear them loud and clear with just a straightforward one/2 wave VHF homebuilt vertical dipole! They will need to have Minimize electrical power way down or a thing.
I haven't seen much documentation relating to this antenna so the purchase was fairly a chance. After 24 hrs use I can verify Improved overall performance on 800mhz and an important advancement on Cape Air 345.000mhz. I will likely be evaluating the Omni to quite a few other antennas I've mounted. Opinions and inquiries are welcomed.
I keep track of a P25 simulcast program here in RI. I have been Beforehand using a DPD 800 mhz mag mount up on roof. Reception was Good Along with the mag mount. But the position I mounted it right on a ground plane that has a body weight in it to help keep it set up, is not likely acceptable. See image. That metallic plate is a pc aspect deal with bent into form with a bit of 2x3 screwed into bottom so it stays set. Up to now even in the final wind storms it didnt go.
If I place what I just shown earlier mentioned, assured some people will Assume it ONLY hears stuff in People parts and practically nothing else. Then on the other hand, if you place the outdated '25-1300' shtick, that won't just precise either.