N.Ganesan - VU3GEK-KJ6LRR
This circuit design follows a standard well-proven approach based on various kits available on WWW modifications have been done.
Features & specification
q 160-10 Meter receptions.
q AM/SSB & CW.
q DDS VFO of tuning step 1, 10,100Hz, 1, 10,100 KHz, 1& 10MHz.
q Sensitivity Approx. 0.2 μV.
q Selectivity 5-pole variable-bandwidth crystal filter, approx. 200-2000 Hz
q Discrete Pass band Tuning (DPT).
q I.F- derived AGC with fast/slow/off control *.
q Variable RF gain controls (actually IF gain useful in weak signal reception)
q Switchable low noise pre-amp (14dB gain) and attenuator (20dB).
q S-METER for signal strength indication.
q Internal speaker, 2Watts dc controlled audio amplifier.
q Low-noise analog variable audio filter approx. 600-4000 Hz *
q 12VDC Power.
q Available as a DIY kit or fully assembled high quality components for reliable operation.
2N5109,J310,MC1350,SA602,NE5532,MAX293,AD9851,16F73 & TDA1013.
UNDER TESTING SEE THIS BLOG FOR UPDATE