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2m

Projects

144MHz FM/SSB Receiver by DL5NEG
After I had developed a couple of shortwave and VHF-FM Receivers in my sparetime, I decided to develop an allmode receiver for the 144 MHz amateur radio band as my university graduation thesis.
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2m.Ontvanger FM 144 Mhz de F6FEO
Voici un récepteur FM VHF très simple réalisé à l'aide de composants récupérés sur une épave de téléphone sans fil.
Il faudra y dessouder : deux circuits intégrés, le filtre à quartz 10F7.5A, un quartz 10.245 Mhz, le filtre céramique et un pot FI 455 Khz.

 

DSP-10 Project The DSP-10 is an amateur-radio, software-defined 2-meter transceiver by W7PUA
PDF files:

Un transceiver 144 SSB
Le PICARDY par
F6FEO Principe de fonctionnement
La platine de base du transceiver SANTERRE est utilisée en moyenne fréquence fixe sur 22.915 Mhz.
Un transverter équipé d'un VXO ultra-stable sur 121 Mhz permet un trafic confortable dans la bande SSB 144 Mhz.
ONLY in FRENCH

144MHz All Mode Transceiver,The main characteristic of the transceiver presented below it is the simplicity, but in the same time to obtain good performance with a minimum investment. The principal component of this radio it is MC3362
BY VA3IUL

Fredbox: 2m AM Transceiver by GØUPL

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See original Fredbox at G3XBM's homepage here



2m TX ~2W by LY3LP Laboratory

Description of a 144 MHz high power amplifier for 2 x 4CX250B by LA0BY





A 144MHz and 432MHz GS35b High Power Amplifier by DL4MEA  

Description GS35b PA 144MHz & 432MHz in German and English language.



The FARA 2m Amplifier Project by WA1GPO An economical, easy-to-build, 25 watt 2 meter amplifier.

VHF Linear Amplifier
BLY 89C There is not a personal design on this page, just I've transfered useful notes from PHILIPS RF Bipolar Transistors - Data HandBook (1993 Edition).

By SV1BSX









UN AMPLI 144 AVEC UNE GS31B
par F6CHT
Shematic

This 7-Element-28-Ohm-DK7ZB-Yagi
has the highest gain and best F/R for
CW/SSB/EME-use between 144 and
144,6MHz.









For two purposes a Cross-Yagi can be useful: Satellite work or if you need both vertical and horizontal polarization for terrestrial contacts.You can use two different feeding methods: Always cross polarization or switchable for vertical, horizontal an right hand cross polarization.
By DK7ZB  



QUAGI ANTENNA DESIGN   by    VE3SQB

 
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