AMP-U25 Amplifier | 20-40W Power Boost for UHF (400-480MHz) | Compatible with Handheld Radios | Amplifies Analog and Digital Modes | Ideal for Mobile, Field, & Home Use

Wasn't sure this was going to meet my expectations, but have to say that I am extremely happy with this purchase,I went with the dual analog/digital vhf unit,to boost the transmit power of my many ht's to better reach 2 repeaters in my area,one being approx.13miles away,the other about 17mi. I am currently using a Radtel 600,5 watt output radio in the 147Mhz range,and have gotten very impressive output levels from this BTECH amplifier,It bumped my power output to between 55 and 60 watts,and my swr is right around 1.45-1.49,I hope to reduce that with a little work but is well within an exceptable level for now,my signal reports have been good and no complaints on my transmissions,as before I used this amplifier my transmissions were weak and hard to hear at times,much clearer now! I am using a Nagoya UT-72 loading antenna,and a low loss 240 coax from HT to amplifier.I feel that this was a great option for me to turn my HT's into a 50-60watt base station.The unit is well costructed,small in size and very easy to hook up,as for longevity I will have to wait and see,but as or if any issues arise I will post updates, but as of this writing I am very happy and would not hesitate to recommend this amplifier to anyone wanting to boost the output power of their handheld 5w radio. Just be sure you select the right model for your needs,VHF or UHF model,and whether or not you want analog only or analog/digital unit. 73

The BTECH AMP-V25 amplifier is working exceptionally well. It's just what I needed for those times that call for a little "umph".

Bought this to work with my Baofeng F8HP 8w handheld. As the input for the radio only specifies 2-6w, I have done testing with both 1w input and 8w input (the only two modes that radio supports) and it works flawlessly with both. I am not sure if it puts out different amounts of wattage though, as I do not have a meter to test with. Setup is very easy - the included hand mic sounds awesome with it. The setup I used was the reverse SMA to SMA adapter in my radio, the the SMA cable to the input on the amp. Then I ran the control cable to the radio from the amp, and plugged the hand mic into the amp and used that for PTT. It sounds great! The only 2 downsides to this unit are the amount of extra cabling you need if you want to use the external mic (which I'm not knocking it, that is the primary design, it just becomes cumbersome next to a standard mobile), and the fact that the speaker is bottom firing, which in my car makes it very quiet. There is no line out to hook up into a seperate speaker. If there was, I believe this product is worth every bit of 5 stars.

Amp appears to be working fine and the price seemed reasonable, thank you.

BTECH AMP-V25D Review. FCC ID: 2AGND-AMP-V This amplifier is FCC certified Part 90. This is BTECHs VHF amplifier with DMR capability. This amplifier allows someone with a handheld radio to transmit at higher power. There are three ways to connect a handheld radio to the amplifier. The amplifier has a built in speaker as well as a supplied hand microphone. This allows flexibility in operation. The radio's volume control controls the speaker. Audio levels are sufficient. Transmit audio with the included microphone is good. The amplifier includes a power cable with a cig lighter plug, so it must not draw much current, even at higher power. The manual does not provide specifications. Power output is great: Advertised Power Output: 20-40 Watts Measured maximum Output power (Into dummy load):44 Watts with 5 watt input. All in all a good device. I'm happy with it. -------------------------------------------------------------------------------------------- I also have the UHF version. This one puts out 45 watts! Pretty good. One thing: This amplifier is illegal to use on GMRS! ALL GMRS equipment must be Part 95 certified for GMRS use. There are no amplifiers with such certification.

Not only is this a great amplifier, but the company is stellar as well. I had an issue a few months after use and they took care of me lickity-split, went out of their way to make sure I was completely satisified. This thing transmits and and recieves so clean that Dawn dish soap took notes on its performance. I run this in my truck with an 8 watt motorola handheld with an small magnetic VHF/UHF whip... I'm hitting repeaters 50 miles away, and having great reception with operators 70+ miles away on VHF through those repeaters. (Provided I don't live in the Rocky Mountains and LOS is decent, your mileage may vary) My main recommendation is go ahead and pickup a heavy-duty SMA cable to connect between amplifier and your handheld. It does come with one, but I wouldn't rely on it. I also added quick-detachable BNC adapters to mine so I can swap between amplifed and rubber duck within seconds, it also saves the SMA connectors on your equipment from wearing down if you are frequently changing them out.

Cons: • The pigtail connector disintegrated in my hands the very first time I tried to use it. One of the SMA connectors was just not soldered/crimped properly. But that's a minor issue. • The first major issue is that the amplifier just stopped amplifying for no apparent reason. I noticed this because there was too little current drawn from my power supply. A follow-up test showed that the antenna SWR was near perfect, but the output power was basically equal to the power of the connected HT itself. • What was tricky about this failure is that the amplifier still kept turning on and off, so it was not a power supply issue (and it isn't). It would also turn on the TX indicator light and produce an audible click. Basically, you might think that the amplifier is still working, unless you used additional readouts: (a) power supply whooping little current draw; (b) TX power meter showing low power out. In other words, you can't tell if the amplifier is working or not without additional equipment with additional features. Pros: • They sent me a free replacement pigtail connector as soon as I contacted them. • The amplifier works (unless it breaks). Summary: • I would suggest staying away from it, unless you are willing to play lottery. • If you are trying to turn your HT into a base station, I would suggest just getting a decent base/mobile radio.

Btech makes great products. I'm a big fan of their UV-Pro HT walkie-talkies and I purchased this amplifier to use with mine. It works perfectly. It's compact. It does not overheat. I can move it easily between my in-home ham shack and my car. My "radio checks" report a clean and powerful sound. This is a great value and I highly recommend it.