simplex

My SDRtrunk software and SDRplay RSPdx combo work great. I have no problem with P25 systems in my area. I set up a system using the tx freq of my Pi-Star DMR hotspot. If I activate World Wide TG 91 with my radio, the hotspot tx is picked up by the SDRtrunk and it decodes the DMR audio...

Just some extra info on this dead thread: SWNH District Fire Mutual Aid KCF-415 is a voted, simulcast simplex system. TLDR, dispatch can hear the mible, they can hear dispatch, but other people who can hear dispatch, might not hear that mobile. The way the TX signal is sent out to all those...

Hello All. I was chatting with mmckenna about this a couple days ago and thought I would take it to the masses: I have a Kenwood TM-V71A in my truck. NMO mounted Laird 5/8 antenna with an SWR of 1.1 on 146mhz. Install is as tight as a drum. As it pertains to 2M SIMPLEX will I get any...

Hello all! I have returned to seek expertise on a project I am creating. Task: Create a simplex repeater for search and rescue operations using a mobile radio. I am trying to find a way to boost coverage of team communications in a remote area. I currently have a 25w AnyTone AT-778UV which I...

I came across analog FM traffic on 468.5625. Listening for a while has led me to believe this is Berrien Bus. There is a fixed base dispatch and mobile units that check in from areas around Berrien County on simplex. I have not been able to find any local licenses associated with this...

Hey all, Does anyone happen to know what freq the EOC uses in Lancaster county for civil defense siren activation? Any chance EOC has a POCSAG system also? PS. any cool simplex stuff out and about. Cheers KE0EWO

Hello. I have quick questions. I'd appreciate your input. Is simplex possible in P25 Phase II? Is DMO possible in DMR Tier III?

What kind of radio traffic is usually heard on USFS frequencies? I have not heard much around my area so was just curious on what others heard. Thanks!

Hello everyone, I am working on an LMR radio project near the NYC area. The goal is to extent the two way radio coverage from an existing site via a hybrid DAS system to a large warehouse environment using GTR8000 base stations to generate the many simplex VHF frequencies for the client's LMR...

Hello all, I apologize for the title; I hate acronyms but what can you do. I am a volunteer fire fighter, and I am investigating different possibilities with our radios. Bare with me because I am not going to get this across properly, but I am interested in knowing if the following is possible...

***I hope you agree this isn't a repost since the Los Angeles OP25 thread ultimately is not what I thought it was*** So Ive learned a great deal recently about SDR -- I started on a Mac and got GQRX and DSD+ running beautifully together. Problem was the dispatchers send out the incident but...

Im hoping you guys can help a newbie. My main goal is to achieve good simplex comms from my base (home rooftop tripod mount) to and from my truck. On both ends are baofeng uv-6r 5w HTs. At base is 50' rg8x direct from HT to 2m base antenna (firestik) on roof (about 40' high). I'm attempting to...

i am looking for a cutting chart for the UHF GMRS band in order to use my mobile antenna as my base GMRS setup for on top of my tower when i get it up at the new place. i have the Laird B-4505C that i want to use for all 8 GMRS channels mostly on a repeater and doing some simplex work.

So I have scanned Dallas/Ft. Worth for several years but for some reason I have missed the Dallas Fire frequency that is listed as "Repeated Fireground/Admin" at 453.67500 with a tone of 131DPL. I am guessing I have missed this because it is never used but I was curious to know if anyone has...

I've always heard UHF is better for urban and congested areas as it penetrates buildings better but vhf is better for open terrain and hilly areas as its longer wavelength always it to travel further in range. so my question is if your camping or hiking, what would be ideal in an environment...

I want to punch in some frequencies for a ham bank I'm putting in my scanner. I understand that 446.000 is the national calling but are there any more that are commonly used for simplex communication? Particularly in the 70m band.

Not too long ago, there were isp speed traps in Evansville. I picked up a couple of guys on simplex at 161.73. They came in good, so I didn't get off the frequency. I looked up licenses, but all I got were remote pick-ups. I'm not surprised. My scanner has a weird if, but I wasn't sure what the...

Hi: I am new to this forum so if I am in the wrong place, please let me know. I have a Radio Shack PRO 2055 which I have not used much. Trying to get a list of frequencies for my area, Round Rock TX for Police, Fire and EMS. In addition I want to monitor the frequencies at Georgetown Airport...

How much FM simplex activity is there in your area? What bands are being used? Here in the Indianpolis area, it seems that most chit-chat is on repeaters. A lot of hams don't have the ability to put up much of an antenna, so they seem to gravitate towards repeaters. However, there are some...

Where I work we work with a Motorola radio setup, we run on 154mhz band, and use Motorola base telephone transceivers, and CP200 handhelds when we're in the field. This past weekend, we think our system may have been struck by lightning. Our radios now have what I would describe as a "ghost"...