Would one of these 4g antennas be okay for both 700-800mhz and 450mhz?

[saioke]

I'll use this as an example here - Shotglass Omni Antenna For Cellular 4G/LTE, Band 71 & 5G. N-Female Permanent Mount IP67. RSGB-4G/5G-3-NF

I'm not particularly interested in that one, but I'm curious if anyone has experience with using one of these odd antennas to receive P25 that they could recommend. But, I'd also like an antenna that could perhaps pick up 450-470mhz well enough for local DMR systems... Currently I use a short 6 inch dipole (Not mounted very high) that can pick up 450mhz well but, my P25 700-800mhz signals are lacking. I'm looking for something that could potentially do both, preferably omnidirectional, but still some gain.

I currently have a discone antenna mounted around 15-20 feet for my scanner, and it does "okay" at p25, but there's still days where audio can be garbled or I can't pick it up at all. So I also prefer not to get another discone.

 

[prcguy]

Its rated for 700/800 but not below 617MHz, so no 450. Probably not much if any gain either. A typical scanner Discone like a Radio Shack, Diamond D130, etc, is not very good at 800MHz due to the pattern shifting upwards causing a lot of loss at the horizon. They do work fine from VHF air through 512MHz however.

 

[saioke]

Its rated for 700/800 but not below 617MHz, so no 450. Probably not much if any gain either. A typical scanner Discone like a Radio Shack, Diamond D130, etc, is not very good at 800MHz due to the pattern shifting upwards causing a lot of loss at the horizon. They do work fine from VHF air through 512MHz however.

Yeah my discone can pick up air bands better than any antenna I've come across. I think it mostly fails P25 because there's a lot of hills in my surrounding area, and I heard discones don't really have any gain.

I've had luck using a TV yagi mounted vertically for P25 and 400mhz both but unfortunately the systems I want to monitor are all in different directions. I'd love to find an omnidirectional antenna that could do both but, that might not be possible.

 

[buddrousa]

Your answer may end up being multiple scanners and antennas to cover your listening choices.

 

[saioke]

Your answer may end up being multiple scanners and antennas to cover your listening choices.

I think you're right. I been thinking, I have a little dipole that works really well around the 70m band. So if I could just find a decent antenna that can pull in P25 700-850mhz effortlessly, I could just swap the SMA's out whenever I want to listen to either DMR or P25.

Is there a decent and affordable Omnidirectional 750-800mhz Antenna that anyone can recommend, one that preferably has some gain that could pull in weaker signals? I bought a cheap $1 antenna discounted from Aliexpress that's supposedly rated for 698~960MHz. Probably not worth a darn but hey, for a dollar I can't complain. I'll try it out lol.