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Description
Usdr Usdx + V2 Plus 8 Band SDR Full Mode HF SSB QRP High Frequency Transceiver, Spec: EU Plug, EU Plug, US PlugFunctions 1. Remove the headphones and the power button microphone jack to the front panel, convenient to connect the headset and the power button 2. Move the keys to the bottom of the LCD screen for a larger touch area and a more comfortable keystroke experience 3. Upgrade the built in speakers to double the sound 4. PCB to reserve a variety of upgrades required pad, out of the box, can be used as a DIY upgrade learning template 5. Change the QRP CW
Functions1. Remove the headphones and the power button/microphone jack to the front panel, convenient to connect the headset and the power button
2. Move the keys to the bottom of the LCD screen for a larger touch area and a more comfortable keystroke experience
3. Upgrade the built-in speakers to double the sound
4. PCB to reserve a variety of upgrades required pad, out of the box, can be used as a DIY upgrade learning template
5. Change the QRP CW frequency quickly
6. Support CW side volume adjustment
7. Support CW side tones
8. This is a shortwave QRP SSB/CW transceiver. Ultra-small size for portable outdoor use, (no battery) 1602n LCD screen, built-in speakers, support to connect computers using FT8, JS8, FT4 and other mode software control digital, support CW automatic decoding
Features:
1. 8 tracks covering 80M/60m/40m/30M/20m/17M/15m/10m
2. PCB layout design in line with high frequency circuit design principles to ensure excellent performance
3. Both built-in Battery and external 13.8v power supply, can achieve 8-stop 3-5w power, and reserve the necessary sot-223 and To-220 pack pad for upgrading
4. High launch efficiency
7. KDS high precision tcxo brand, frequency accuracy above 1ppm, frequency stability above 0.5ppm
8. Ultra-small size: 88x39x124mm (without bulge)
9. Rich interfaces (cat, ptt out, mic/key, k-head mic)
10. All LPF components use 100v c0g/np0 capacitors
11. Using op-amp chips are lower than those of lm4562 noise
12. A built-in speaker with a cavity
13. BNC antenna interface
Explanation
1. Support full mode: usb, lsb, cw, am, fm (ssb mode reception effect is good, but the transfer effect is poor. AM and FM mode is free, the effect is not good)
2. Filter DSP filter: 4000, 2500,1700,500,200,100,50 Hz passband
3. Function DSP function: automatic gain control (AGC), noise reduction (NR) , XMIT Voice Trigger (Vox), RX attenuator (Att), TX Noise Gate, TX unit control, volume control, DBM/S instrument
4. Sidebar/carrier suppression SSSSB emission: superior to -45dbc, IMD3(dual tone) -33dbc, receiver: superior to -50dbc
5. Support for multi-band support, in the 80m frequency range of continuous adjustable 10m (from 20khz. 99mhz, loss performance)
6. Open source firmware, built using Arduino IDE; allows experimentation, new features can be added, contributions can be shared via github, software complexity: 2000 lines based on
7. The software vovovox code can be used for fast complete control (qsk and semi-qsk operations) or RX/auxiliary switch TX to be used in digital mode (no cat or PTT interface is required)
8. The PTT/PA output is externally controlled by the all-digital tx-delay stage and the software-based SSB stage transmitter: the phase of sill SI5351 is controlled (by a small frequency change i2c at 800 kbits/s) and the PA amplitude is controlled (by a pwm pa key shaping circuit)
9. Software-based all-digital SDR receiver level (optional): sampling of I/Q (complex) signals from a digital mixer with an orthogonal sampling detector, and mathematically perform a 90-degree phase shift (David Hilbert transform) in the software by adding an Atten sideband
10. Three independent switchable analog pushers (0db, -13 db, -20 db, -33 db, -53 db, -60 db, -73 db) from the front receiver
11. Receiver background noise mds: -135 DBM at 28 mhz (200 hz bw)
12. Receiver receiver front-end selectivity: +/-2 khz scrolling at steep 45 db/decade tuning frequency
13. Blocking dynamic range: 20khz offset 123db, 2khz offset 78db
14. CW decoder, direct/iambic-a/B keying
15. VVFO A/B + RIT and split, and the corresponding relays pass through i2c
16. The CAT supports cat with a filter switch (using the kenwood TS-480 protocol)
Package includes:
1. 1 x transceiver
2. 1 x the microphone
3. 1 x charger
4. 4 x machine floor Mats
Specification:
| Package Weight |
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Shipping Notes
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Exchange/Return Notes
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4.5 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Dog tested, dog approved
This is a large, heavy-duty bone. And a great one. My Pitt-mix is very tough on things and can destroy most chew toys in short order. This actually has held up very well to his best attempts. As shown in the picture, after a lot of use over several weeks the most that he's been able to do is to put some small bite marks in it. I'm impressed.
That's largely due to the material used. It's a dense, rubbery-type material that's resilient to biting/cutting/tearing. Very solid without being hard. Kind of along the same lines as that used for the popular Chuck-It toys if you're familiar with those (but heavier). I like this softer material better than the nylon bones which he loves but I'm afraid are going to crack a tooth at some point.
Has some scent to it but does not have a strong smell. Can't vouch for the flavor but he seems to enjoy it.
Again this is large and heavy toy. Probably a little too big/heavy for smaller dogs under say 40lbs or so. Some probably could do it but really better for the bigger dogs.
Given how long this one looks like it's going to last, I'd say that it's a very good value.
Bottom line - Dog likes it. I like it. Everybody's happy. Great bone. Buy it.
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Reviewed in the United States on February 14, 2026
★★★★★ 5
Flavor/Scent May Not Be Very Strong
My pup is picky about toys and the only ones that hold his interest are mostly the scented rubber toys from Playology, They’re great, but expensive, and I was really hoping this would be a cheaper alternative. It really looked like the kind of toy he likes. It’s heavy rubber with a softer texture than the hard toys out there, and it had a lot of surface grooves that lets him grip it with his teeth easily. I gave it to him and he was excited for all of 30 seconds, then he discarded it and hasn’t looked at it since. I suspect the flavor/scent may not be as strong but that’s just a guess. I don’t know if it’s a flaw in the toy or simply a picky pup, so I hesitate to rate this down for that. It does look like a really nice toy and if your dog isn’t a jerk like mine it may be great, and it’s definitely a good price.
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Reviewed in the United States on March 4, 2026
★★★★★ 4
Heavy duty rubber bone
This bone is really heavy duty. It's got a groove down the middle of you you can put your pups favorite lickable treat. My 36 lb aussie enjoyed chewing on this and was nibbling the ends. This bone has held up to her chewing it with only a couple little pieces coming off.
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Reviewed in the United States on February 13, 2026
★★★★★ 5
Big hit with my super chewer.
Here’s an expanded, Amazon-friendly version that keeps a natural, human tone while adding helpful detail:
This is a truly heavy-duty chew bone and a great option for aggressive chewers. The first thing I noticed when I took it out of the package was the weight. It’s solid and well made, so it definitely feels like it’s built to last. Because of that, I would recommend being mindful when handing it to your dog and avoiding tossing or dropping it on hard floors or toes.
My dog, Yukon, was instantly thrilled with it. From the moment I gave it to him, he’s been carrying it around proudly and settling in to chew on it for long stretches of time. It’s kept his attention much better than lighter chews, and it’s holding up well to his strong jaws so far. I also love that it provides great enrichment and gives him a safe, satisfying outlet for his chewing instincts.
Overall, this chew bone has been a big hit in our house. If you have a powerful chewer and are looking for something durable that will actually keep them engaged, this is a solid choice. I’m very glad I picked it up for Yukon and would recommend it to other dog owners with heavy chewers.
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Reviewed in the United States on January 30, 2026
★★★★★ 5
Immediate Hit With My Power Chewer!
Immediate hit. Like, didn’t even make it fully out of the package before my dog was sniffling around the package, all excited.
I have a serious chewer, the kind that treats most toys like a personal challenge. This one has actually held up. It’s firm and tough, but not rock hard like those nylon bones that make me nervous about teeth. There’s a little bit of give to it, which I like.
The beef flavor must be legit because he keeps going back to it. This isn’t one of those toys that gets ignored after five minutes. He’s been happily gnawing on it and hasn’t managed to destroy it yet, which honestly says a lot in this house.
I also like the shape and texture. It’s easy for him to hold, and the ridges seem to keep him engaged longer. Bonus points if it’s helping his teeth even a little, because chewing is already his favorite hobby.
No toy is truly indestructible, but this has definitely earned its place in the “worth buying again” category. If you’ve got a medium to large dog who lives to chew, this one’s a solid win.
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Reviewed in the United States on February 1, 2026