Balun One Nine v2 Barebones - Small Low-Cost 9:1 (1:9) HF Antenna Balun and Unun with Antenna Input Protection for Shortwave. Great for Software Defined Radio (RTL-SDR), Ham It Up & SDRPlay

Using with SDRplay RSP1, that was given to me by a friend. I was skeptical at first of the One Nine and was pondering a quick return to vendor due to no case. I rigged an old RX bottle to house the OneNine that works. Upon set up and use for 10 days and nights on all Bands in all conditions I was intrigued . I had a Ham friend stop by with an Antenna Analyzer and we hooked it all up to my 50 foot end fed long wire antenna that's about 30 feet off the ground and It resonated extremely well on all Bands, 10m-40m and shortwave as well. We tried it without the ground as some thought it's not needed for receive only, Trust me the Ground made a Huge improvement in reception and lowered the noise level. All in All, very satisfied with this product for my particular setup and region.

I have a Grundig G5 and had a length of 80’ +/-copper wire out the window just stretched out on the yard in the grass and it was decent. I’ve never used a balun or unun before so after some research I bought this. I used a 3.5mm jack to sma male to connect from the radio to the unun, attached the copper wire from the yard to the antenna side and ran another piece of copper wire to the ground side out to a ground rod and WOW is all I can say! I’m pulling in a lot more Shortwave signals than before. Loud, clear and a lot more to listen to. It may not be perfect to some or neat but it’s definitely made a significant improvement to what I was receiving. Will pick up a few more for future use. It’s definitely made a difference to where I want to research more and keep experimenting in the hobby. Wish I had purchased this way before now. Definitely recommend.

Really improves reception on a longwire antenna.

I purchased this balun and constructed a 40m horizontal dipole antenna, and I cannot say a single bad thing about it. Does its job like it should and a great price. Only thing I wish was different is it would be cool if it either came with an enclosure or nooelec offered one for it. But hey nothing a little ingenuity can't take care of.

I received this item on time, easy installation, really matches perfect with my long wire antenna, improve every thing in my SDR device, nooelect so good item this is. I recommend to every one this item. low noise reception too. and the must important the quality product great.

I bought one of these to match an old shortwave receiver of mine to a "random wire" antenna, expecting it to have the ability to be configured as an auto-transformer the same way that V1 could be. The unit I purchased could not be set up that way - the RF transformer on the board is different. (The RF transformer does not have a center tap the way the V1 transformer did.) That said, you can probably use this to match a balanced and unbalanced line, which my testing seemed to confirm - it just isn't the "typical" autotransformer unun setup that is typically used. When I brought this to the attention of Nooelec, they took a bit of time to research it and get back to me - but they DID research it, which impressed me, and decided to refund my purchase (which was way above and beyond, and not necessary, but much appreciated nonetheless.

1st one had a badly soldered SMA connector but the replacement was fine. Bugged twice now via email to leave a review so here I am leaving my honest opinion. Please DO NOT send multiple emails asking for reviews. Once is enough asking again is annoying and will upset customers.

I ran a length of magnet wire off of this and my shortwave reception SKYROCKETED..

Balun Unum para experimentar en SDR con antenas de hilo, pero poco más. Realmente para temas de HF, MF y LF hay soluciones en SDR mejores como las antenas Youloop, activas y pasivas. Eso si, funcionar funciona, pero necesitarás mucho espacio libre para poder tender los hilos.

Is degelijk en handig door de verschillende aansluitstukjes!

Added this balun to my home made inverted V dipole and the results are amazing. Much less noise in the lower bands and can pull out those weaker signals a lot better now.

correspond a mes attentes

Really improved the reception quality of the HF and medium waves. I'm using it with an RTL SDR and now I'm able to receive many more signals than before in low frequencies. Remember that if you are planning to use it with a cheap RTL receiver (like me), you should have a medium wave filter to reduce the interference. The only negative I can see with this product is the missing case. Remember to buy one before exposing it to the harsh weather.