The Signal Hound SA44B is a Software Defined Receiver (SDR) optimized as a narrow-band real-time RF spectrum analyzer. It is a compact, simple to use, effective troubleshooting tool for the general lab user, engineering students, and ham radio enthusiast.
All Signal Hound devices are calibrated to better-than-box specs during production. However, if you require a signed calibration certificate with a printed packet of calibration data, you will need to select it below:
Our standard warranty is for a 2-year time period. An extended warranty is available up to a total of five years (2-year warranty plus 3 additional years). Extended warranties are calculated at 6% of the product cost, per year.
Silicon Chip magazine wrote a highly detailed review regarding the use of our 4.4 GHz analyzer, ultimately deciding that "in effect, the hardware of the SA44B and its matching software seem to have been so well integrated in a functional sense that they really can turn your PC into a high performance spectrum analyser."
The SA44B has a preamplifier for improved sensitivity and reduced LO leakage. There is also a thermometer for temperature corrections, allowing accurate amplitude measurements over the entire operating temperature range.
QST takes a technical deep-dive into the experience of using our 4.4 GHz devices together as RF analysis tools, including the way in which the SA and TG can work together as a scalar network analyzer (SNA). The article includes lots of screenshots and charts.
Although the unit came in the wrong case and had TCXO problems, the people at SignalHound responded quickly to resolve these issues. I have had a number of interactions with customer support and each has been outstanding. The software is feature rich and mostly intuitive. Bottom line, they have hardware, software and customer support that provide excellent value.
My perception of buying spectrum analyzers in the past led me to believe I needed to spend $10k+. I was thrilled when I learned of this product from a colleague. It has all the basic features one needs (markers, traces, average and peak power detection, presets and save capability). I could not be more pleased with this product. A great value.
I am an rf technician currently working for See Factor in NYC. The purchase of my Signal Hound changed my career.. Changed my life!. Nyc can be really tough rf wise on any given day .. most days! I did not want a tti..screen way too small. The Signal Hound is so sensitive! I can see great detail .. Thank you so much for an absolutely kickass product .. Best $1000 I have ever spent!!
Please note that my device is the first model, USB-SA44. The performance of this version was not bad considering the price but I would have appreciated more advanced software and a bit more sensitivity.
Does much of what a $30K bench analyzer will do, at a fraction of the price. I used the programmable interface to automate signal strength measurements for antenna pattern generation. Portability is key to this function. Also used the mating signal generator,(with used directional couplers I found on e-bay), to generate return loss plots of antennas. Rugged and reliable equipment. Great products. Thank you, Signal Hound!
Good instrument. It is compact and affordable. The signals looks decent. I wish there were more analytical capabilities but I suppose I would have to pay for them. Overall it is worth spending $1000 than buying a $20K instrument.
I had the pleasure to use the USB-SA44, USB-SA44B and the USB-TG44A for more then 4 years, products are very good but not perfect, my main concerns are with the USB connector on the back, my USB-SA44B unit cannot move on the bench, as soon I move the unit and/or the cable moves it becomes disconnected and with Spike crashing many times, My USB-TG44A start to have the same problem, definitive the quality of that connector need to be improved.
So we use the SA-44B to monitor receive points (harmonics, intermod & EMR) from remote locations, often several kilometers away from the receive point. This is important since the our test equipment connected via USB to a local PC on the tower is now available to view by technicians standing at the various TX positions working on individual transmitters. By using remote access into that PC from tablets and phones we can fault-find and also check when to combine or rotate antennas.
This product is great for DAS. I have used it for commissioning for three different sites and it still is in good working order. The only drawback is there is nothing to protect it from a drop on the ground.
I am a small product manufacturer myself and I also value any constructive customer feedback.
Your product has served my needs admirably, for the purpose of small signal transmitter testing and tuning.
The only issues I have are the software locks up on occasions, particularly in the colder months which makes it frustrating when I am performing a tricky antenna tune.
The recovery process is a compete power down and software shut down come task manager error reset.
I feel as though the product I own has a wonderful basis but just requires the final 5% of software polishing to be the ultimate tool for my purposes.
We found its performance was excellent for the price with the convenience of the USB interface allowing the PC to do the hard work. We used this in conjunction with the USB tracking generator which allowed us to characterize components and carry out RF tasks.
I purchased my Signal Hound about 5 years ago. I am a telecommunications design engineer and amateur radio operator. When I started my career in the 1970s, spectrum analyzers were exotic, very expensive and heavy instruments! I have used my Signal Hound in developing an Analog Telecommunications Course and a Digital HF Telecommunications Course. I also used it designing 3 different Software Defined Radios and in programming various synthesizers. It is extremely easy to use, the manual is excellent and most of all I just plug it into my HP Laptop so it is totally portable. Several things I found most invaluable/necessary. I purchased an sma attenuator set, with DC block and also an RF probe. You need these to do proper measurements and protect your unit. The unit is ideal for design, radio hams and would also be ideal for a College/University Telecommunication Laboratory.
Jeremy Clark
VE3PKC
A very useful piece of test equipment. Very accurate to within one Db and frequency good to 800 cycles at 1Ghz. Has an input for a tcxo which I use to get frequencys to 50 cycles at the 1 Ghz. I use the unit to tune duplexes at VHF and UHF frequencys and can measure down to -100 Dbm very accurately and can see signals down to -135 Dbm which can be very helpful. I have used the unit in many other ways and it has not disappointed me, money well spent.
This is an unsolicited letter of praise for the Signal Hound USB-SA44B spectrum analyzer. I was looking for a spectrum analyzer to replace an HP which proved too costly to repair. All I needed was something to analyze modulation characteristics of a PCM/FM telemetry system. I evaluated several low cost portable analyzers as well as the Tektronix RSA306 USB analyzer. Some of them seemed like they would be better but in the end the SH won primarily due to the features that came standard with the Spike software.
These tools are the main instruments I use for my ham radio stations and find them to be accurate, reliable and flexible. Being portable I am able to take them in my computer bag to my different stations as well. I will not give them up! Joe
I use this regularly as a measurement receiver and spectrum analyzer. It has the features of much more expensive analyzers such as harmonic analysis and phase noise analysis (you usually need to feed in a better low noise reference for this). I am planning to take advantage of the SDR and waveform capture capabilities in the future but have not done this yet.
The Spike software has the familiar look and feel of a standalone analyzer and seems fairly bug-free.
The accuracy and precision are adequate for me.
I have been working with this product for several years for testing purposes and it was what I expected.
It is very easy to use and easy to configure, the libraries have several functions but you can work in build your own libraries to work with. If you are working with C# programming maybe you need to import functions.
I purchased a Signal Hound USB spectrum analyzer for my consulting business and used in on a NASA CubeSat contract I was writing firmware for. The spectrum analyzer worked well for analyzing the 450 Mhz radio communications used on the spacecraft during testing at Goddard Space Flight Center in Greenbelt Maryland. For some reason, around late 2013, the device stopped working and was reporting a Self-Test failure and has never worked since.
It suffered from being a first-generation product, both the software and the hardware itself. A couple of years later I inquired if there was an upgrade or trade-in program but there was none. I should never have purchased it.
The Spike SDR up grade was a great improvement. I would like two things: 1. The ability to monitor (listen to) the audio as I measure it. 2. % modulation in a graphic form for AM and graphic deviation indication for FM.
A few years ago we purchased a Signal Hound Spectrum Analyzer from Signal Hound. We are a medium size manufacturer of electronic/ optical devices, including signal lights for railroad application utilizing LED devices. The Signal Hound Spectrum Analyzer is so accurate, we use it to calibrate and verify our Tektronix scopes used in our assembly line. An essential, indispensable part in our QC process. Highly recommended.
Laszlo Vass, CEO
Great product. Exceded my expectations. The versatile measurement modes allowed difficult-to-identify HF radar signal characterisitcs to be explored in frequency and time domains. The phase noise mode was a real plus. At least two engineers who saw it in use have gone out and bought one. Less than half the cost of repairing my R&S spectrum analyser power supply!
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