Latest V2.4 Malachite DSP2 SDR Radio Receiver, GOOZEEZOO Shortwave Radio Receiver 10kHz-380MHz & 404MHz-2GHz AM SSB DSB CW NFM WFM Air FT8,RTTY Decoder Function Noise Reduction with 5000mAh Battery

If you've never had a Software Defined Radio (SDR) before, get ready for some fun. For the price point this thing is a riot to use, you won't be disappointed. Keep in mind it's not some flimsy little toy, this is a very sophisticated piece of equipment and may not be suitable for some due to all the advanced features and menu-driven interface.I wouldn't recommend this radio for anyone much under the age of 14 (unless they're another Elon Musk!). Any younger than that, they'll just get frustrated and break the thing. Ditto for some senior citizens who may get frustrated with modern technical stuff (except Ham operators, they can master anything regardless of age!). I'm 72, consider myself tech-savvy, but had to crack the manual on a number of features that were total mysteries to me.I'll tell you right now, after spending just one hour with this radio, you'll wanna throw out those old C. Crane & Tecsun models (both excellent choices in their day). If you're not sure, see if you can find a pdf file of the user manual on the mfgrs. web site; if available, go through it and see if this is really what you want. Some of you may not wanna mess with touch-screen menu systems and all the strange options totally unheard of in non-SDR radios, it can be confusing, maybe frustrating.I purchased an older model of this radio some time ago and liked it. It was kinda dinky with substandard audio due to the dinky speaker. Austere packaging but the receiver was out standing. Then I saw THIS thing and knew I really "needed" it! One can never have too many SDR's! The price is considerably higher now, but what you get is well worth the extra $$$.After picking up the package at the post office, I couldn't wait to get home so I unboxed it right there in the car. Plugged in the telescopic antenna, turned in on and tuned to the 17-meter Ham band. Just with that dinky antenna I immediately saw four signal spikes pop up on the waterfall display, picked one signal and heard this guy from Prince Edward Island, Canada running an ICOM-7300 at 100 wats like he was in the car with me - excellent audio quality.This radio is built solid with an aluminum case. Two knobs on top for volume & tuning, great for old-school dial-doodlers like me. Learning how to use the touch screen & menu selection takes some practice & patience, but you'll get the hang of it, Smartphone users will have no problem.What impressed me was all the stuff that comes with this model (as opposed to the older one): nice hardshell transport case, wrist strap, telescopic antenna, pointer device for touch screen, stick-on foot pads, decent manual, and USB cable. There's also a stick-on gizmo that goes on the back of the radio & folds out to form a prop.For first-time users: though the radio works well enough with the telescopic antenna, it works best when connected to an external antenna. The manual provides a fair amount of detail on what kinds of antennas are appropriate for various bands. But keep in mind there are TWO antenna connections: high-impedance (high-Z) and low impedance 50-ohm, you have to specify which to use. That is done by selecting the HARD menu option on the bottom tool bar display; this will take you to options for setting various features of the radio. Near the top, you'll see a box indicating which antenna port is active, push it to switch to the other port. When in doubt, there's indicator light next to the ports to tell which one is active. Once again, the manual explains all this stuff. I only mention this as it's something that might trip up first-time users.The audio quality is awesome. The Digital Noise Reduction (DNR) feature wipes out virtually all background static, there's also a noise blanker to take out pulse-like noises. These are pretty standard features on all high-end SDR radios these days, especially Ham receivers. The noise reduction on this radio is as good as my Yaesu FT-710 ham rig, actually a tad better.This radio is perfect for Ham operators who want to monitor but can't have their regular rigs with them, even using just a basic telescopic whip. For everyone else: you'll need to sit down with this radio and LEARN how to use it, not that difficult. READ THE MANUAL FIRST!!! Seriously, this will save you tons of frustration. Start out with basic operating features first, learn those before fiddling with advance functions. It will take some time but well worth it. Oh, for those with big fumble-fingers like me, that little pointer thingy they give you works great for pressing those tiny little boxes on the touch screen.This radio is going to seriously challenge C. Crane and Tecsun. You're going to go SDR, or you're going to go out of business.Hope this review was helpful. I didn't go into ALL of the esoteric (though interesting) details, just wanted to let you know I thought this is a well-designed well packaged awesome piece of radio technology for a very reasonable price. Great value for your bucks.

Yes there are many setting to consider so take some time to get accounted and make sure you have a good antenna. The sound quality is outstanding, the sensitivity is unbelievable, the visual display is detailed, high quality and keeps your interest for hours. I set up some aircraft frequencies to scan and the quality of voice, frequency sensitivity and ease of each aircraft frequency scan selection is impressive. This is my first SDR so its a new view of radio frequencies for me and the frequency coverage is way beyond any of my other SW radios. My primary use is for VHS emergency frequencies, Aircraft monitoring, GMRS monitoring, FM listening and occasional Ham monitoring. The manual is not detailed so I found just trying each setting and logically experimenting with each menu got me to a workable knowledge of the SDR. This SDR has it all, well worth the dollars spent.

I was cautious on the DSP1 as I couldn't find much information on it on the internet. Tons of stuff on the DSP2 but not much on the DSP1. And the DSP2 was out of my budget so I emailed Goozeezoo to get some information on the differences and here is their response:"Regarding the differences between DSP1 and DSP2, here are the key distinctions:1. Firmware:- DSP1 comes with firmware version 1.10D V9, which will not be upgraded in the future.- DSP2 features a firmware version authorized by a Russian developer, currently at version 2.4, with the possibility of upgrading to newer versions available on the official website.2. Frequency Ranges:- DSP1 operates in the frequency ranges of 50KHz-250MHz and 400MHz-2GHz.- DSP2 covers the ranges from 10kHz-380MHz and 404MHz-2GHz.3. Sensitivity:- DSP1 has a sensitivity of 0.3uV.- DSP2 offers the same sensitivity of 0.3uV up to 1GHz.These are the primary differences between the two models."With that clarification I purchased the DSP1 and after about an hour learning the settings and menu system I was feeling confident with the radio. I couldn't be happier as it performs very well and blows away any of the ATS models I've tested. I am a Ham radio operator and used to navigating the frequencies and compared to my Icom 7300 this thing is pretty sensitive and spot on. The DSP2 does some things that the DSP1 doesn't, like FT8 and RTTY but I have no need to just listen to the digital without the ability to transmit. I use my 7300 for that. If money was no concern I'd jump at the DSP2 but the DSP1 will do just fine for me for shortwave and built in CW decoding (which works perfect) 2m and 70cm also.The build quality is exceptional and the encoders smooth and clicky. Night and day compared to other receivers I've tried.