Description
Mini Duplex Hotspot Main Board for MMDVM Digital Modem Box and 433 Antenna Support DMR / D-Star / NXDN / POCSAG
Features:
- MMDVM simplex hotspot version, using imported crystals. Classic motherboard interface support: 2 x OLED screen interfaces, NXT serial port screen interface, SMA antenna base, IPEX antenna base, STLink firmware upgrade interface, support online upgrade, support DMR, D-Star, YSF (C4FM), P25, NXDN, POCSAG and other digital modes, on-board PCB antenna takes up small space. And it has stable signal, convenient DIY, LED light dual-line design display more clearly, support raspberry pie 1B 2B, 3B, 3B+, ZeroW.
- The mini board supports PCB antenna and two external antenna interfaces! The duplex version supports two external antenna bases and supports online firmware upgrade.
Parameter:
- Frequency: U band (420.000-434.900/438.100-470.00/)
- Supported mode: DMR, D-Star, YSF (C4FM), P25, NXDN, POCSAG
- Power: 20mW
- Size: 65 x 30mm
- Supported Raspberry Pi: 2B/3B/3B+/4B/ZeroW (The Raspberry Pi can be loaded directly, and the row header has been welded.)
- For BlueDV with Type-C interface can be used to connect computers
The difference between Simplex and Duplex:
- Simplex can only work in direct frequency, just like the direct frequency intercom on the handset radio. Only one handset radio can talk to each other simultaneously.
- The duplex box can be like a relay station. The handset radio needs to set different frequencies for transmitting and receiving. The working principle of the duplex box is like a multi-mode digital relay station.
- The advantage of duplex box is to use DMR mode to talk at the same time without interfering with each other. One box can monitor two groups at the same time, and two groups can talk at the same time without interfering with each other. One duplex board is equivalent to two simplex boards. (Duplex board can also be set as simplex.)
Package Included:
- 1 x Mini Duplex Board
- 2 x Antenna
Features:
- MMDVM simplex hotspot version, using imported crystals. Classic motherboard interface support: 2 x OLED screen interfaces, NXT serial port screen interface, SMA antenna base, IPEX antenna base, STLink firmware upgrade interface, support online upgrade, support DMR, D-Star, YSF (C4FM), P25, NXDN, POCSAG and other digital modes, on-board PCB antenna takes up small space. And it has stable signal, convenient DIY, LED light dual-line design display more clearly, support raspberry pie 1B 2B, 3B, 3B+, ZeroW.
- The mini board supports PCB antenna and two external antenna interfaces! The duplex version supports two external antenna bases and supports online firmware upgrade.
Parameter:
- Frequency: U band (420.000-434.900/438.100-470.00/)
- Supported mode: DMR, D-Star, YSF (C4FM), P25, NXDN, POCSAG
- Power: 20mW
- Size: 65 x 30mm
- Supported Raspberry Pi: 2B/3B/3B+/4B/ZeroW (The Raspberry Pi can be loaded directly, and the row header has been welded.)
- For BlueDV with Type-C interface can be used to connect computers
The difference between Simplex and Duplex:
- Simplex can only work in direct frequency, just like the direct frequency intercom on the handset radio. Only one handset radio can talk to each other simultaneously.
- The duplex box can be like a relay station. The handset radio needs to set different frequencies for transmitting and receiving. The working principle of the duplex box is like a multi-mode digital relay station.
- The advantage of duplex box is to use DMR mode to talk at the same time without interfering with each other. One box can monitor two groups at the same time, and two groups can talk at the same time without interfering with each other. One duplex board is equivalent to two simplex boards. (Duplex board can also be set as simplex.)
Package Included:
- 1 x Mini Duplex Board
- 2 x Antenna
Payment Terms
1. We accept PayPal,Payoneer,Visa Card,Google pay,Credit card etc.
2. We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay.
2. We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay.
Shipping Terms
1. We will process the order within the handling time ,if you have any questions, please contact us via eBay message or email.
2. For remote regions of DHL/FedEx..., extra shipping costs might be charged. Usually it costs about 30USD-50USD. We will contact you if shipping company informed us your address belongs to remote area. Thanks for your understanding.
2. For remote regions of DHL/FedEx..., extra shipping costs might be charged. Usually it costs about 30USD-50USD. We will contact you if shipping company informed us your address belongs to remote area. Thanks for your understanding.
Return Terms
If you receive the item that not satisfied or defective, please do not open case and kindly notify us within 30 days. We will guide you the returning process for replacement or refund.
Custom Duties & Taxes
1. It is buyer's responsibility to cover the import duties, taxes.We do not charge any taxes and fees, and the possible taxes and fees will be collected by the platform or by third parties such as customs and carriers.
2. Please check with your country's customs office and inform us what/how much should declare before shipping.
2. Please check with your country's customs office and inform us what/how much should declare before shipping.
Feedback
1. Please kindly leave us a positive feedback and 5 star DSR if you satisfied with our product and service. Please feel free to contact us firstly if you have any problem with your order, we are responsible and credible seller and will solve the issue it for you asap.
2. If you are dissatisfied for any reason, please don't be quick to leave us neutral or negative feedback. We work hard to make sure EVERY CUSTOMER 100% SATISFIED and resolve any problem for you and always leave positive feedback to all our customers.
2. If you are dissatisfied for any reason, please don't be quick to leave us neutral or negative feedback. We work hard to make sure EVERY CUSTOMER 100% SATISFIED and resolve any problem for you and always leave positive feedback to all our customers.
On Feb 12, 2023 at 23:23:09 PST, seller added the following information: