Helium Hotspot Miner 5.8 dBi Indoor Antenna Kit, 11ft CFD-200 Antenna Extension Cable & Magnet Base for RAK Nebra Indoor Bobcat SyncroB.it


This is an indoor omni-directional 915 MHz antenna with 5.8 dBi gain. Also included is a heavy duty magnetic base that measures 2.5 inches in diameter and weighs 11 ounces.

Total gain loss: 1.1 dB

Full Spec Sheet

This is compatible with the RAK V2, Bobcat 300, Nebra Indoor/Outdoor, SenseCAP M1, SyncroB.it, Helium Hotspot, Kerlink & LongAP. (915 MHz USA and Australia versions only).

This is a rigid solid antenna with no elbow bend point, therefore if you plan to use directly with your miner without using the magnet base, please note this. We recommend using with the included magnet base for maximum performance.

See also our Rokland 8 dBi 915 MHz Outdoor Antenna for Miners.

Is this 5.8 dBi indoor antenna comparable to the Rokland 8 dBi outdoor antenna?

This is shorter at 15 inches, not weather proof, and best to put in a window, or a more open area inside vs. where your miner sits. Our outdoor antenna is more effective for IoT equipment/miners if you do not have a high density of other hotspots around you. However, this indoor kit could be a good upgrade over just having your factory antenna connected to your miner if an outdoor antenna is not possible (some HOAs do not allow an outdoor antenna for example).

Beware cautious of gain inflation- some places arbitrarily inflate antenna gain number to appear better than competing products. Because gain cannot be easily measured by the end users, we have seen similar antennas marketed as numbers like 18 dbi to 30 dbi that are not even 20 inches tall. Why buy a 5.8 dBi when you can get a similar looking "18 dbi" for the same price, right? Rokland has been making antennas for over 14 years for WiFi, 4G, and other applications. Our 915 MHz antenna are listed with actual specifications. You also do not want extremely high gain as your path will be very narrow and miss other hotspots.

I see similar looking antennas online that say for 600 Mhz to 2700 Mhz, is a wider frequency spectrum better? 

Antennas with a focused spectrum will have better performance on that band segment vs antennas with very wide spectrum. We would not recommend using antennas that are also WiFi 2.4 Ghz compatible with your mining equipment. This antenna has a frequency range of just 900-930 Mhz to give you maximum performance.

More about this kit

You can use the included magnet base with the factory antenna of any of the listed miners, or with the included 5.8 dbi antenna. As gain increases, your vertical path will decrease, allowing you to communicate with hotspots from a greater distance but reducing your ability to be in the path of closer hotspots. As your community experiences new miners over time, it may be necessary to adjust what antenna you are using to deal with the density.

Frequency range: 900-930 MHz
Gain: 6 dBi
Polarization:Vertical; Directivity:Omni-Directional; Material:ABS,Copper
Antenna connector: RP-SMA male; Impedance:50 ohm; Antenna height:39cm/15 inches
Base diameter 2.5 inches
Base cable length: 11-foot CFD-200 shielded low loss cable

Low loss shielded cable

Our cable includes 11 feet of CFD-200 shielded coax cable built-in, with RP-SMA termination (to connect to your miner). CFD-200 has a gain loss of just 1.1 dB at 11 feet. Lower cost bases generally use RG58 cable which has a loss of 1.7 dB, over 50% more loss.

Recommended Use

Use with your Nebra, Bobcat, or RAK miner to help increase your coverage area. This is an indoor antenna and not rated for outdoor use. Check for Rokland brand outdoor mining antennas online. We recommend placing this inside near a window, or in a more optimal place for sending and receiving than where your miner currently is.

Compatible with:

Bobcat 300
Nebra Indoor/Outdoor
Sensecap M1
Helium Hotspot

Warranty & Support:
Complimentary Telephone and Email/Live Chat Support (Click Here)

State sales tax of 7% will be added to FLORIDA purchases only. There is no sales tax for any other state.

Return Policy: You may return any item, open or used, for an exchange or refund at your discretion within 30 days of receipt. Because range can vary greatly based on your environment, if you are not sure a particular product will meet your range needs please contact us before buying. Orders with free shipping selected will incur a 10% restocking fee to help us cover the original shipping cost, unless the item is defective or different from the advertisement. Any expedited shipping charges paid, including return shipping, are never refundable. If you opt for an exchange, we will pay to ship the replacement to you. Items must be returned the way they were received, with all pieces, documentation, and retail packaging (if applicable) included. For bulk purchases, see our bulk purchase return policy here.

Customer Reviews

Based on 33 reviews
Jiscard Pierre-Louis

Austin thank you soo much for your help and professionalism. Its been a big help and the Miner is performing VERY WELL!!!!! I really do appreciate the assistance greatly

Samuel Law
5.8 dbi antenna

I purchased two of these and they work beautifully, earnings went up on both my bobcat 300s

Jeremy Scott Ridge
Bobcat 3000 - Stock Antenna Worked Better.

Purchased this 5.8 bBi antenna as a upgrade from the 4.0 dBi stock antenna that comes with the Bobcat 3000. With the stock antenna I had 6 witnesses consistently for my miner. When I upgraded to the 5.8 antenna, after about 3 days I had 5 witnesses with the antenna placed in the exact same location as I had placed the stock antenna. It has been about 2 weeks now since I upgraded the antenna, and I am now down to 4 witnesses consistently with the 5.8 dBi antenna and I am now planning on going back to the stock antenna. I have tried placing the 5.8 antenna in different locations as well (since it has a longer cable), but no improvement. I see in other reviews that this antenna has helped a few other Bobcat miners with indoor antenna setups like mine, but it does not seem to be the case for mine. Very disappointed.

Thank you for sharing your experience. An increase in gain means an increase in overall range, but a drop in receive path because it becomes more narrow. It does not mean an automatic increase of witnesses in all locations. Witnesses would need to be located within the additional range area. It is possible for witnesses to decrease in some environments with a higher gain antenna because of the more narrow receive path, or other factors (witness count can go up or down regularly with no change to the antenna). If you would like any assistance determining what is going on, or to see if another antenna may be more ideal, please reach out to our support with your three word hotspot name.

Abdul Rahman Rahmanzia

Helium Hotspot Miner 5.8 dBi Indoor Antenna Kit, 11ft CFD-200 Antenna Extension Cable & Magnet Base for RAK Nebra Indoor Bobcat SyncroB.it

Kristian gomes

Helium Hotspot Miner 5.8 dBi Indoor Antenna Kit, 11ft CFD-200 Antenna Extension Cable & Magnet Base for RAK Nebra Indoor Bobcat SyncroB.it