EGV-9B_BPFLPF
module for EGV-9B CW Transceiver kit
Page 2
INTRODUCTION
EGV-9B_BPFLPF
The
EGV-9B_BPFLPF
is the 3 to 30MHz filter plug-in module for the
EGV-9B
9-band CW transceiver.
This module incorporates 5 7-pole low-pass filters and two variable band-pass filters and one band-pass
filter. All the filters are switched by means of relays to avoid their interactions.
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
RX BAND-PASS FILTER:
Power requirements:
12
– 14VDC
Antenna impedance:
50 ohms nominal.
Frequency:
1) Fixed filter for 80m
2) Variable filter from 60 to 30m
3) Variable filter from 20 to 10m
LOW PASS FILTER:
Filters:
80m, 60-40m, 30-20m, 17-15m and 12-10m
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:
T
he attenuation of harmonics signals are not so good.
Switching:
Relays.
Board dimensions:
100 x 100 mm.
PLEASE READ ALL ASSEMBLY INSTRUCTIONS COMPLETELY AT
LEAST ONCE BEFORE YOU BEGIN.
