EGV-9B
80 to 10m QRP CW Transceiver Kit
Page 3
Note: good experience on radio assembly is required.
It shouldn't be your first transceiver to build.
All SMD parts soldered at the factory. You don't have to solder anything SMD
SPECIFICATIONS
GENERAL:
Frequency coverage:
80-60-40-30-20-17-15-12-10m
Note
: You can tune below and above the bands (from 3 to 30MHz) but downgrading the characteristics
Tuning steps on two ranges:
10Hz-100Hz-1kHz and 10kHz-100kHz-1MHz.
Modes:
CW.
RIT function:
Without frequency limit
Power requirements:
10
– 14VDC, 1 – 2A transmit, 0.15 – 0.25A receive.
Antenna impedance:
50 ohms nominal.
Controls:
Tuning with pushbutton. Band-pass adjust. Volume. RF attenuator. UP-DOWN band switches.
Board dimensions:
180 x 140 mm.
Weight:
(no enclosure): 0.35 kg.
TRANSMITTER:
Mode:
CW (direct frequency, without heterodyning or mixing)
RF output:
3 to 6W
@13.8V
(depends on band)
Output TX Amp:
C class amplifier.
Harmonics output:
-45dBc or better below the fundamental frequency (
excepted 60, 17 and 12m
)
Other spurious signals:
-50dBc or better below the fundamental frequency.
60, 17 and 12m bands:
The attenuation of harmonics signals are not so good.
T/R switching:
Relays.
RECEIVER:
Type:
Superheterodyne. Balanced mixers.
Sensitivity:
0.4uV minimum discernible signal average (according band).
Selectivity:
3-pole crystal ladder filter, 800Hz nominal bandwidth.
IF frequency:
4.915MHz.
AGC:
acts on the receive path according to the received audio level.
Audio output:
250mW, 4-8 ohms.
PLEASE READ ALL ASSEMBLY INSTRUCTIONS COMPLETELY AT
LEAST ONCE BEFORE YOU BEGIN.
Summary of Contents for EGV-9B v1
Page 10: ...EGV 9B 80 to 10m QRP CW Transceiver Kit Page 10 252 QUADRANT COMPONENT LAYOUT MAP...
Page 14: ...EGV 9B 80 to 10m QRP CW Transceiver Kit Page 14 100n capacitors location map...
Page 24: ...EGV 9B 80 to 10m QRP CW Transceiver Kit Page 24...
Page 34: ...EGV 9B 80 to 10m QRP CW Transceiver Kit Page 34 SCHEMATICS...
Page 35: ...EGV 9B 80 to 10m QRP CW Transceiver Kit Page 35...
