power

Does anyone know for certain the specications for the power plug which goes into the side of the radio? It appears that it's a 4mm barrel, but I'm unsure of the center pin. Manual doesn't say. I'm trying to make a custom power cable for my radio.

With so many types of batteries on the market now (AGM, LIo, lead acid, etc.) I'm at a loss as to what is best to use as a battery backup for my ham radio transceivers. I want to set up a battery back-up, maybe a small bank of batteries, that will be outdoors with the power lines run through...

Does anyone know of a charge controller or battery charger that accepts multiple types of inputs? For example a charger that can handle 12-18v input from say a solar panel or if 120v generator or grid electricity to charge a 12v Deep Cycle SLA Battery?

I don't know much about CB Radios but I just got my hand on the Johnson Messenger 4145 and don't have any power cables for it. What would I need to connect it to a car and possibly home power? Any and all help would be appreciated. Thank you!

Rather than paying $80 to 100 for a new GPS receiver, I am going to try using my Earthmate GPS. My question is this....The Earthmate has a USB connection, but the BCD996XT has a serial port. I am thinking of building a cable to connect the two, with a female serial port and a female USB. Looking...

If I am reading the manual correctly you cannot listen to the scanner and charge it at the same time. How do I get around that? If this is correct are they just trying to make you buy two units, one for home and one to carry?

Hello, I have a Motorola CDM 1250 mobile radio mounted in a fire apparatus. Upon powering up the radio works properly, however once you activate the mic to transmit, the radio powers off. Any ideas what might be causing this?

Does anyone have the frequency for Pacific Power and Light in the Lincoln County area? yesterday we had a logging truck run into a power lines nearby here in Otis and we lost power, luckily it lasted an hour, could have been worse. I checked the two frequencies I had from before we moved into...

These budget radios seem to be all over the place when it comes to transmit power. In other words, they rarely live up to their specs, at least not from the reviews that I've seen. Has anyone had a problem where this had become a major issue? I really don't want to waste money on something that...

I understand the technical difference between ERP and transmitter output power, but I was wondering if someone could help me understand the intent of the difference as seen on FCC licenses. I have several licenses in the Public Safety Pool and I've noticed that on one frequency/location I'm...

Hey, This is my first post here so hopefully I get it right LOL. I have a Pro-106. I must say its a nice unit. I do have one problem with it though. I've been using rechargeable batteries in the radio since I bought it. However, it seems I have to replace the batteries once a month because...

Hey everyone, i just have a few questions and wondering what peoples thought were or if it's possible to be done. I recently installed a BCT15X into my truck, i direct wired installed it due to saving cigarette plug space for other electronics such as my fire dept. light stick, bluetooth fm...

Problem: When our repeater loses power and goes to back-up power we have no way of knowing... (I cant imagine that I am the first to think of this) Solution: Dedicate a radio, in the shack, that will be connected to a trigger relay and timer to signal say every 15 minutes. (I would need to...

I was recently given a TR-2500 with three power adapters. One is a disposable battery adapter and the other two are for ac and dc plug in connections. The radio works just fine off of batteries but not off of the ac or dc connection packs. I need to repair these so I can use them. I found the...

Hello, I have had my license for going on 2 years but haven't done much with it. Well I am now over the age of 18 and I have a good steady income coming in so I was wondering about buying a new HT. I owned a Yaesu VX-7R a few years ago. I plan on buying another one. I was wondering if this is a...

Dear all I have some long lines of LMR600 of approx ~120ft for 800mhz and 150mhz monitoring,, want to be able to caclualte DB loss for antenna to the rig, rule of thumb we can say X db of loss per ft of ZZZ type of cable and add so much for each connector of ZZZ type etc, however this is still...

Any ideas out there on how to create the 13.8v DC, 750ma power required to run a Bearcat scanner during a power outage, without using an automotive or wet cell battery,, preferably using AA, C or D batteries ?

How do you communicate 5 Miles away, 50 Miles away, and 500 Miles away? Thanks. I have read a lot of posts and there are many thoughtful people.

Hey guys, I have come across TWO Yaesu FT-2400s. Each has their own problem. My first one I had for a long time mounted in my truck as a fire radio. I had it in storage for 6-8 months and powering it up today, it wouldn't. It keeps blowing fuses. I've removed the front LCD panel, and still goes...

I have a maxtrac 300, 32 ch, 60 watt vhf low band (42-50mhz). When I connect it to the power supply and tx-rx it seems to work fine. But while in tx the voltage on the power supply drops to 5v from 13.8v. When I connect a 40 watt uhf of the same make, there is no voltage drop. Do I have a bad...