Cheaper, more powerful than Radio Shack.
924520
Product is higher wattage than Radio Shack brand heat gun (for shrink wrap tubing, etc.) and works really well. Phenomenal price. Just annoyed they choose to unload hot pink ones on Amazon customers. Doesn't quite match my tools.
87974
For the less technical among us. This device plugs into a USB port and provides a way for your Windows desktop to have an outdoor WiFi antenna. Position this antenna outdoors, vertical, and above other objects, with a clear line of sight to where the WiFi access point is. If you just lay this down on top of something indoors, do not expect it to work at all. It's cheap, and it works. By itself it will not help your phone, tablet, etc., and the way to do that is explained for the more technical folks below.

The place where the antenna and the base connect is a little weak and could be reinforced with duct tape, etc. Since I am using this on an RV and it gets driven at speed, I put the entire thing inside of some PVC water pipe with a cap on the top. That will protect it from most anything.

I also tested the $20 Alfa UBDo-uv-t which worked better, but it has a _directional_ antenna and needs to be pointed, while this unit is omnidirectional. I did not test the identical-looking $40 Alfa UBDo-nt also sold on Amazon, which seems to be an older model and the specs say it is substantially less sensitive.

Linux identifies this device as "Ralink rt2870/rt3070". OpenWRT has a driver in their latest version, so if you have installed OpenWRT on your router and it has a USB port, plug this in and restart your router and it will come up with an extra WiFi interface: now it's a WiFi repeater or an access point with an outdoor antenna. I use this on my RV, with the Blurex antenna outside, vertical, on top of the RV, and the router inside and repeating the trailer park WiFi from its internal interfaces, so that we don't have a problem with WiFi getting through the metal skin of the RV. I used an old Netgear WNDR3700v2, and connected the 12 volt power input directly to the RV power with a barrel connector from one of the remaining Radio Shack stores. No wall-wart, no inverter. Most Linux distributions should work without any need to install a driver. I tested on a laptop running Debian.
3379723
I'm using this as a lightning arrestor for a ham radio antenna. I have a lot of spare RG6 that I use as feedline for a 160m off center fed dipole antenna. This takes 100 watts of power with no complaints.
1001748
A Terrific bit of engineering. As a retired broadcast engineer I can say this product just blew me away. Its so tiny yet powerful 7 watts, that's enough to do your neighborhood. And be careful of idiotic FCC. But they work only on complaints. Use it well and I suggest a dipole rather than the little whip. I assume the whip quarter wave isn't that great for the final RF stages.
Must admit I do both audio and RF and this stereo BOX is just unbelievable especially at the crazy low price. It should last you the trip bro!
Fleetwood Mac never sounded better in stereo! Tests show about one mile with the included antenna if you do not elevate the antenna. The unit comes with a whip (vertical designed for reception). To give stability and keep RF from causing hum and noise, you should at very least but a quarter wave wire as a ground radial. Several will make it a "ground plane". Mine works great, but frustrating in setting tuning ranges.
205024
Other than being overbuilt, and a battery cover that required muscle, this little box rocks.

If you can find these radios for $3 or less, buy several and put them anywhere you might need them.
3525442
Why would anyone want to pay more? It's exactly the same product found at Radio Shack for twice the cost.
2715644
Good value, works fine, and doesn't require batteries.
2855912
a little more expensive than the other brands, but it works well and provide secure supply of power, highly recommend
4347471
After running my test lab on several (6) independent batteries, I got tired of replacing them for 180 dollars each, and having all the issues with consumer grade batteries. Another factor that I found out (the hard way) is that consumer grade batteries do not have true sine wave output, they have "square wave" which will not power some industry grade servers (HP ML370, DL380, etc.)
Doing some checking, this looked like just the thing. It's 17" rack mountable, not ridiculously heavy, has 2 independent batteries that are replaceable, software to manage it, and at a good price - less than the sum of the batteries I was using.
I ordered one, did the calculations, and ordered a second to power the entire lab.  They arrived in sturdy shipping containers, for a reasonable price, and were easy to setup.
The only down side is the mounting rails are a little primitive.  You have to bolt the front and rear independently, where newer systems have a better "clip" arrangement on the back of the rack to make it unnecessary to have to reach all the way back.  Otherwise, fast easy setup.
Highly recommended - especially if you take your data seriously!
1380964
These things used be all over in phone boxes. Now when you need one you go to radio shack and they want $ 10. It's unbelievable ! This thing did the job but it's worth 10  cents.
935808
Works OK. No problems using this with my old Radio Shack base.
3183224
I have the older version Watts Up? Pro (the RS-232 version) that still works well apart from the AC socket going bad as the contacts are rather flimsy.  I ended up making a pigtail to connect to the circuit board.

I found it valuable (and fun) for not only measuring the amount of power my appliances took, but as an aid in repairing my antique radios & TV.  I noticed that on my 50's vintage Philco shortwave the power consumption would gradually rise as it was played, starting at 75 watts then climbing to 95 watts in an hour.  That prompted me to check under the chassis to find a burned out resistor.  Now the radio plays better than before.
694858
Tried one from Radio-Shack and was told that 700mA would work just fine. Not so!  This one does the job without a hitch. The wrong supply can fry your feeder.
2512774
Easy to use, no wire to fuss with, have to change batteries from time to time, but it's worth it.  Can easily use with multiple PCs.
3184377
Have been using a butterfly shaped bare bone antenna bought for 3 dollars from Radio Shack years ago. This one gets a few more channels and gives more stable output.  Get 78 channels with this one versus 72 with the old one (Lower Manhattan facing south).

Not all channels are watchable. Still quite impressed.
2104819
Radio Shack wanted $18.99 each for these batteries. I needed three. I got all three for under $9. They work fine.
4562508
Good quality product at a good price. I had purchased something similar from radio shack and paid WAY too much.