New Packet Radio Modem Version 1.0 for long-range 70cm band HAMNET connections with 500mW output power and Power over Ethernet (PoE).I was amazed by the work of F4HDK. And as a ham radio guy who was active in packet radio in 1999 and the years beginning of 2000s I wanted to have something faster. HAMNET is nice, but you cannot have that long range transmissions as on 2m or 70cm bands. The NPR-H modem is compatible with F4HDK's firmware and can be used for ham radio guys as a standalone long range communication bridge, entrance to ham radio, bridge between networks, etc.What is New Packet Radio?Bi-directional IP over radio link  (no AX.25 despite the name “packet radio”) 70cm Frequency band - much easier to use / reaches longer distances than 2.4GHz or 5.6GHz (Hamnet). Transparent TCP bridge over 70cm100% Open-Source FirmwareSpecial modulation and codes to operate in Germany with 100 kbpsAlready many NPR master nodes in operationAll-in-one HardwareUp to 0.5 Watts output power @ 70cmSRAM 1024KLow noise amplifier and TRXRaw datarate: 110 kbps to 1 Mbps Compatible to NPR firmware from F4HDKSuccessor of NPR-H, see CQ DL 3-2021Design by DO5DSH, Ortsverein O28PoE capabilities, a single cable for power and data! The modem has a build in PoE power supply, so you can use it directly from an Ethernet PoE source.Technical SpecificationOutput Power:     +25 dBm typ.LNA Gain:     13 dBRF Connector:     SMAFrequency Range: 360 - 535 MHz, optimized for 70 cm ham radio bandPower consumption    170mA @ 5V USBPower supply     5V USB (DC) or Power over Ethernet (4W)DeliveryNew Packet Radio Modem NPR-H 1.0 PCB, flashed, tested and pre-configured. Enclose not included.    

New Packet Radio Modem Version 2.0 for long-range 70cm band HAMNET connections with up to 7W output Power.  I was amazed by the work of F4HDK. And as a ham radio guy who was active in packet radio in 1999 and the years beginning of 2000s I wanted to have something faster. HAMNET is nice, but you cannot have that long range transmissions as on 2m or 70cm bands. The NPR-H modem is compatible with F4HDK's firmware and can be used for ham radio guys as a standalone long range communication bridge, entrance to ham radio, bridge between networks, etc.What is New Packet Radio?Bi-directional IP over radio link  (no AX.25 despite the name “packet radio”) 70cm Frequency band - much easier to use / reaches longer distances than 2.4GHz or 5.6GHz (Hamnet). Transparent TCP bridge over 70cm100% Open-Source FirmwareSpecial modulation and codes to operate in Germany with 100 kbpsAlready many NPR master nodes in operationAll-in-one HardwareUp to 7 Watts output power @ 70cmSRAM 1024KLow noise amplifier and TRXRaw datarate: 110 kbps to 1 Mbps Compatible to NPR firmware from F4HDKSuccessor of NPR-H, see CQ DL 3-2021 and CQ DL 3-2022Fits into standard commercial aluminium enclosureDesign by DO5DSH, Ortsverein O28Technical SpecificationOutput Power:     +38 dBm typ.LNA Gain:     13 dBRF Connector:     SMAFrequency Range: 360 - 535 MHz, optimized for 70 cm ham radio bandPower consumption    170mA @ 12V, up to 1.5 A in TXPower supply     12V -16V DCEnclosure     Designed for    AKG 71 24 100 MEAKG 71 28 100 MEAKG 71 32 100 MEDimensions:72x28x100mmDeliveryNew Packet Radio Modem NPR-H 2.0 PCB, flashed, tested and pre-configured. Enclose not included - please order separately.    

QO-100 Upconverter-H Please also check QO-100 Upconverter-H from www.wimo.com The device from DO5DSH converts a low frequency radio signal to the 13cm (2.4GHz) band and is suitable for operation via the QO-100 satellite. The frequency band of the input signal can be selected from 10m, 6m, 2m, 70cm or 13cm. The input power can be between 10mW and 5W. No additional mixing signals are required to upconvert the low frequency IF signals of your ham-radio transceiver. The Localino QO-100 Upconverter-H provides all signals internally via (low ppm) TCXO and high-precision PLL. The output signal has a high spectral purity; undesired mixing products are suppressed by additional filters. The QO-100 Upconverter-H comes in an aluminum housing including internal passive cooling. All HF connections are SMA sockets. The power supply should be 10V to 24V, with typically 13.8V or 20V in operation, depending on desired output power. The current consumption in standby is about 60mA @ 20V, TX operation draws approx. 900mA @ 20V.Application To become QRV on the QO-100 satellite, a clean RF signal on the 13cm band is required. An upconverter is used here so that existing ham radio transceivers can continue to be used. The transmission signal can be provided by a shortwave or VHF transceiver. The QO-100 Upconverter H from DO5DSH can be set to the 10m, 2m, 6m, 70cm or 13cm band input by jumper. The QO-100 Upconverter-H works with a digital HF vox. Instead of an analogue VOX, a digital VOX ensures that the PA switches reliably even with low input power and dynamic input levels (such as is usual with SSB signals). In addition, no separate PTT line is required. The control power should be between 10mW and 5W. The output power of up to 10W allows you to work directly with the satellite without an additional amplifier and small antenna dishes. With the QO-100 Upconverter-H you can also work with e.g. ADALM PLUTO and 13cm signals, since the device has two 2.4GHz inputs to the amplifier.   Features  Up to 10W output power4 factory pre-programmed frequency LOs for 4 IF inputs from 10m to 70cm Clean and stable output signal Low Spurious emissions Amplifier only mode for 13cm Input Signals with 0-3dBm or 10-13dBm (to be used with e.g. ADALM PLUTO (soldering and rotation of single SMD part required)) Two IF inputs (low and high power) for 10m to 70cm signals Standby function with digital VOX for dynamic input signals, e.g. SSB  Function indicators (Power, PLL Lock, Power Transmission)High power / overdrive input protection (short duration only!) and overdrive warning LED Technical Data Article name QO-100 Upconverter-H Brand Localino Supply voltage 10V – 24V Current consumption (standby, typ.) < 60mA @ 20V Current consumption (PA standby, typ.) < 120mA  @ 20V Current consumption (TX, typ.) up to approx. 900mA at 20V Dimensions W x H x D W x H x D 100 x 80 mm Output power (typ.) up to 10W on 13cm (2.4GHz) 13 cm input (optional) Yes (can be used as a standalone PA) VOX digital Frequency inputs 10m, 6m, 2m, 70cm HF connector types SMA Low Power Input SMA, 10-17dBm High Power Input SMA, 30-37dBm 10MHz reference Input SMA, 0-5dBm CautionEven though the IF input is protected, you should not overdrive it. Maximum input power levels must be taken care of! Measure your power level at the IF Input of the Upconverter-H before operation (your transceiver TX power at the end of the cable). Take care of your SWR (S11, reflectivity) of your 2.4GHz antenna. It must be ensured to have a good SWR (SWR < 1.9 / S11 < -10 dB). The power amplifier may break if you operate on bad antenna SWR. With a typical POTY or helix feed, 80cm dish antenna and optimal input power levels the RF signal power of the Upconverter-H can exceed the nominal power level at the QO-100 satellite and cause LEILA to trigger. In this case, lower the IF input power levels of your signal or DC supply voltage. Please take care when using QO-100 Upconverter-H. Important information / description  Descritption and data sheet (PDF)3D Printable frontside 3D Printable backside (print in ABS / PLA Material) DeliveryPCB, fully tested, calibrated Cooling pads and aluminium block-connector to connect the PCB to the housing (see pictures)Aluminium Enclosure (no milled holes)You need to assemble the aluminium housing.

QO-100 Upconverter-H IP 67K Enclosure mounting the QO-100 Upconverter-H as close to the antenna as possible with short RF cables is key. Reduction of cable loss at these high frequencies is of importance. The IP67K enclosure with three cable outlet ports is well proven and resistant to keep your QO-100 Upconverter-H well even in harsh environments. DeliveryIP67K Enclosure for QO-100 Upconverter-H3 Cable outlet ports

Simple Amplifier5 Watts power amplifier for 13 cm signals.   The "Simple Amplifier" features an output power of up to 5 Watts for 13 cm (2.4 GHz) band ham radio signals to be used with QO-100 for example. The amplifier fits into commercially available aluminum housings including internal passive cooling. All HF connections are SMA sockets. The power supply should be 12V to 20V, with typically 13.8V or 20V in operation. The current consumption in PA standby is about 170 mA @ 13.8V, TX operation draws < 400mA @ 13.8V at 15 dBm input.   Technical Data Article name 13cm Amplifier Gain (typ.) 15dB Amplifier MHT 1008 Supply voltage 12V – 20V Current consumption (PA standby) typ. 170mA  @ 13.8V Current consumption (TX), typ. < 400mA @ 13.8V Output power (typ.) up to 5W (37 dBm) on 13cm (2.4 GHz) Frequency input 13 cm HF connector type SMA Power Input 10-23dBm   Delivery "Simple amplifier" soldered, calibrated and tested (see picture), Version without preamp (10-23 dBm RF power input) Aluminium cooling block Enclosure not encluded. Fitting enclosure: AKG 71 24 100 or other height models from Fischer.