HF TRX work shop organised at SJR Degree college, bangalore.

Dec 27th and 28th an HF TRX workshop has organized in SJR Degree college at Banglore. 10 hams started assembling HMY2K8 TRX. They were given orientation on assembling SSB HF trx, testing and alignment.

The complete article is published in souveneer of HFI2008 and in souveneer of HAMEXPO2008 or mail to vu2hmy@yahoo.co.in

HMY2K8 - A MULTI BAND HF TRANSCEIVER

By Dr. R. RAJASEKHAR, VU2HMY


TECHNICAL SPECIFICATIONS:
Frequency coverage: Ham Bands
3.500 - 3.600 M.Hz ( 80 M )
7.000 - 7.100M.Hz ( 40 M )
14.000 – 14.350 M.Hz ( 20 M )
21.000 - 21.350 M.Hz ( 15 M )
28.000 – 28.350 M.Hz ( 10 M )
Frequency control:
Ver. 1: Direct Digital Synthesizer (DDS) with 1 Hz step continuously variable vfo
with 20 memory channels. 2 line LCD display. Dual VFO, Split , RIT, Key pad /
rotary encoder for frequency entry.
Ver. 2: 5 Band Heterodyne VFO with PIC frequency counter to reduce cost of the
project.

Receiver:
Single conversion receiver with 10.000 M.Hz Cohn filter.
Low noise figure, 2.2 K.Hz SSB band width, 1.5 W audio O/P.
Transmitter:
RF O/P - SSB - 90 W ( DC PWR I/P )
CW - 60 W ( DC PWR I/P )
Built in CW side tone, CW delay, pwr meter, MOS FET Push Pull PA.
Dimensions: 8.5 X 7 X 4.5 inches

Dr.R.RAJASEKHAR