Welcome in the World of QRP and Homebrew HAM Radio of Peter, DL2FI and Nikolai, DL7NIK
QRP Made in Germany and more
|Top-Level 144MHz SSB/CW Transceiver Hohentwiel|
2m SSB / CW only designed for low sideband and phase noise (NO PLL, NO DDS) This helps if you plan to use it wit Microwave Transverters Low current RX, good for portable use.
5 Watt output
Two Subbands: Lower band 144,0-144,2MHz, Upper band 144,2-144,5MHz) generated by switched VCXO's.
High IP3 low noise RX-Frontend
Preselektor Frontend helps working from QRA with high RF levels.Low harmonics and spurious withh excellent IM charakter guarant clean signal even with power amplifiers.
10,7 MHz IF-(SSB-Exciter)
The basic kit contains all PCB,s plus all parts for the PCB,s. Enclosure, peripheral parts are NOT included in the basic kit.
Optionals we offer
Enclosure kit: Enclosure, mountig area, all mechanical part, jacks, knobs, pots.
Digital Frequency readout
BarGraph S-Meter / power-Meter (The S-Meter shown in the picture is NOT available, if you want to use a needle meter, you must organize it by yourself at a flee market.
Basic Kit with for PCB,s all parts for the PCB,s and printed manual. The differences between the 4 basic kits are the type of coils and the quartzfilter.
The enclosure kit contains: enclosure, mounting board, mounting parts, RF tight enclosures for RF PCB and VCXO PCB, reday made SMA connectors, Jacks, Pots, 10 turn Pot for frequency adjustment, mechanical display.
Pictures of a Hohentwiel (Kai, DL1GJJ) click here
The story of my Hohentwiel by Mike K7MDL (EME Specialist) (englisch)
|Look inside the Hohentwiel, Left the enclosure for the RF board, right the enclosure for the VCXO board. IF and control board are below the mounting plate.|
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