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Description
Low Noise Amplifier 1.3dB NF 500MHz to 4GHz 22dB Gain 22dBm P1dB 39.5dBm P3dB SMAPart Number: LNA500M4GH is a high linearity, ultra low noise amplifier in a small 1 1 8x15 16x0. 48 shielded RF enclosure (PN: 6UED2W6H41SMAA2). At 1. 9 GHz, the amplifier typically provides 21. 8 dB gain, +39. 5 dBm OIP3 at a 125 mA bias setting, and 1. 3 dB noise figure. The LNA can be biased from a single supply +5V. Listed pictures include Product Picture and S Parameter from 500M to 4GHz. Proudly Made in USA by Lotus Communication Systems, INC.
Part Number: LNA500M4GH is a high-linearity, ultra low noise amplifier in a small 1-1/8”x15/16”x0.48” shielded RF enclosure (PN: 6UED2W6H41SMAA2). At 1.9 GHz, the amplifier typically provides 21.8 dB gain, +39.5 dBm OIP3 at a 125 mA bias setting, and 1.3 dB noise figure. The LNA can be biased from a single supply +5V.
Listed pictures include Product Picture and S Parameter from 500M to 4GHz.
Proudly Made in USA by Lotus Communication Systems, INC. in Massachusetts. SKU#: AK20-002N.
Features
- Frequency Range: 500 MHz to 4 GHz
- Noise Figure: typical 1.3 dB @ 1.9 GHz
- Gain: 21.8 dB Gain at 1.95 GHz
- Output P1dB: +22 dBm CW
- Output IP3: +39.5 dBm
- DC Voltage: +5V
- Operating Current: 125 mA
- Stainless Steel SMA Female Connector
- High Quality Rogers RO4350 RF PCB
- ROHS Compliant
Applications
- Repeaters/DAS
- Mobile Infrastructure
- LTE/WCDMA/CDMA/GSM
- General Purpose Wireless
- SDR & Ham Radio
- Test Instrumentation
Resources (PDF Datasheet)
LNA500M4GH DatasheetShipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 1440 reviews
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Product Reviews
★★★★★ 5
Finally, a sturdy oversized ball my boy can't destroy! And can pick up easily
This is just wonderful! My dog has destroyed all other balls! I think this is finally one he cannot destroy. And I love the holes so he can pick it up and throw it himself. LOL. And it BOUNCES, bringing him endless joy and skill in catching it. Cause you don't know which way it will bounce off the ground. Oversize was just right for him. Glad to have found this great sturdy ball.
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Reviewed in the United States on April 29, 2026
★★★★★ 4
Almost perfect...upraised logo should be left off
This toy is great for relentless chewers with strong jaws! It would be almost perfect if it didn't have a "K9" logo in raised rubber on it. That is the place that my aggressive chewer shepherd/bulldog mix focuses on and is able to get small chunks off. Without that logo, he would chew the ball more evenly, instead of fixating on that one spot. He loves this ball and has chewed on it for about an hour off & on each of the 11 days he has had it. Although it is very durable so far, the flaw is the upraised logo.
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Reviewed in the United States on January 22, 2026
★★★★★ 5
Perfect for High-Drive Dogs & Surprisingly Durable (six month review)
I use this ring ball for structured fetch and tug sessions with my high-drive German Shepherd mix (91 lbs. at 10 mon.), and it’s easily the best toy we’ve added to our routine. What makes it truly exceptional is how it allows my dog to engage in the full canine predatory sequence:
• Chase: He locks in visually and bolts after the ring when I throw it.
• Grab & Hold: He brings it back, pins it against my leg, and bites down firmly (the toy—not the leg!)—his way of acting out the natural catch-and-control behavior.
• Unalive & Tug: We finish with a strong tug session, which satisfies his instinct to grip and shake—basically his version of “making the toy unalive.”
• Settle & Chew: Afterward, he relaxes with a chew toy or eats—completing the full physical and mental cycle in a healthy, balanced way.
Durability is outstanding—this toy stands up to intense tug sessions with no tearing or damage, even with a 91 lb powerhouse. My senior dog also joins in for double tug play, and it holds up beautifully to that too.
I don’t leave this toy down for chewing—it’s not a chew toy. I use it specifically for fetch and tug, then put it away when we’re done. This keeps it exciting and extends its lifespan. My dog has other chew toys he can use freely throughout the day.
This isn’t just another fetch toy—when thoughtful it provides a structured, instinct-satisfying experience that’s mentally enriching and physically engaging. If you have a high-drive or working breed, or a dog who thrives on interactive play, this ring ball is 100% worth it.
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Reviewed in the United States on March 30, 2025
★★★★★ 5
Finally, a toy my dog hasn’t murdered
If your dog destroys toys like it’s their full-time job, this stick is the boss-level challenge they didn’t see coming. I gave it to my power-chewer (a pit mix with jaws of steel), and after a week of gnawing, tossing, and dramatic tug-of-war battles, it’s still intact. Not even a dent. I think it might be made of space-grade rubber or the same stuff they use in black boxes.
It’s got a good weight to it — heavy enough to feel solid, light enough to toss without pulling a shoulder. No squeaker, no fluff, no sad stuffing guts all over the living room. Just pure chewable glory.
Pros:
• Actually indestructible (or close enough)
• Great for aggressive chewers
• No squeaker = peace and quiet
• Easy to clean and doesn’t smell weird
• Doubles as a fetch toy and chew stick
Minor feedback:
It’s a bit heavy for small dogs, and it doesn’t bounce or squeak — but if your dog’s into serious chewing, they won’t care. Also, don’t drop it on your foot. Trust me.
Final thoughts:
This toy is the Chuck Norris of dog sticks. If your pup has shredded everything else, give this a shot. It might just survive — and so might your sanity.
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Reviewed in the United States on November 7, 2025
★★★★★ 5
Durable
If you have an aggressive chewer this will hold up for about a month. After about a month of daily use my police k9 will get the ends off. Is it completely indestructible no, does it hold up better then any other toy he’s had absolutely. When you have a dog with super high toy drive you understand nothing is indestructible but I will say a month for a toy to last with my dog is great and I accept the fact I just have to buy new toys monthly. For reference my dog will destroy a Kong in about half the time.
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Reviewed in the United States on April 25, 2026