BTECH 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

This thing really performs. Get ready to turn all your handheld radios into a mobile or base. I would recommend this product as durable and quality. Get great report back on my signal. What are you waiting on get one

So, it’s cheap and ya it gets hot so get a fan. If you can get beyond that it’s solid and does its job. It’s 29-30 watts and used it beyond 50 miles with 2dB gain antenna on the base and Browning GMRS Nmo mag mount. It’s a price point value and this one shipped faster. I’m not sorry I got it, it’s on every day as a repeater. You may change wire size, you gotta add a fan I WOULD BUY AGAIN and I’ll update this if it changes

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.

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.

The amplifier arrived on time and well packaged. I hooked it up to my power supply and base antenna to see how well it worked and it works great. I'm using the built in speaker and provided hand microphone. I got into the local DMR repeater with no problems at all. Listened yo myself via hoseline. Perfect quality. Next I went to GMRS to check the analog output. I had a contact with another GMRS user. He said that I was strong into the repeater with excellent audio. Output was 35 watts with the ht set at medium power. That's probably where I'll keep it. It did 50 watts on high power which should be about the top input for the amp. Low power on the radio wouldn't key it and "turbo" on the radio is too high IMO. So I'll switch between the car and the house with it and use medium power on the radio. The connectors looked adequate to me, but I'll add some heat shrink just to be on the side of caution. I'll probably buy another one if this one still works good in 6 months.

So far, it has done everything that it claims that it would. I've only had it for a day, but it seems to be working okay, I wasn't aware that it had a built-in speaker,the quality of sound that comes out of this speaker is not the best, very scratchy, and it sounds like it's in a box or something. Other than that, this thing seems to work great, I've been able to connect to a repeater that was almost a 100 miles away. I'm not sure how that happened, but it's nice.

Haven’t had a chance to test the power output yet, but I bought all three bands. Thanks BTECH! Keeping the bands separate allows for frontend and backend filtering to be unique for each band, as an engineer I really appreciate this aspect. I will post again photo once I have the triplexer bandpass filtering attached to the backend of a stack of all three of these, this will allow UV 5 and the like with poor filtering to latch onto signals with higher gain from base station antennas (selectivity/rejection), and actually benefit from better antennas, with a much smaller amount of attenuation on the front to keep them from becoming overwhelmed lol. Note: all radios exhibit this to some degree and can benefit from additional filtering, even superhet frontend radios. **UPDATE all amplifiers tested fine for power, from 20/25w VHF (my radios have lower power there most do) to 70w on 444mhz UHF!. Anyone having issues and or blowing these is probably unlicensed because if you were you would know SWR being too high will do that to any gear, it’s pretty low for these (1.5 max in the manual) just test antennas and be careful the UT-72 Nagoya they recommend is 1.1 on UHF but 2.2 on VHF, so WILL damage the AMP V25. I will post again if I check these bad boys for spectral purity.

It didn't even work for 5 minutes plugged into my car before quitting and smelling like burnt transistors ... and yes I had the appropriate antenna with a VSWR of less than 1.5 and a compatible Baofeng UV-F8RT two way radio plugged into it. I am very disappointed and somehow expecting more for the price. I learned my lesson and I do not trust this brand.

This has helped me greatly when used with a gmrs application. Has extended my range to 20-30 miles. Very good product.

In general, I'm happy with the ease of setup. I hooked up a UV-5R and tested the output power of the btec amp unit. The most that I could get out of it is 14 watts. That's a far cry from 30 to 40 watts that is advertised. I started the process of an exchange for another one. Hopefully it's just a defective unit and not all of them underperforming like that. I will update this review when I get the new unit **Update** I received the new unit. I tested it. It does preform as advertised. I'm happy with the item.

yes if you no what your doing vary useful i use a fan on mine to keep cool