I said lets do something different, a basic level thing. We have commercial rigs, we have some homebrew rigs and some homebrew rigs are as par with commercial rigs.
But there is a gap between something called pixie to R7 Dayton receiver. Even simple than a dc receiver, which a novice or a new entrant in ham radio can build without any problem and experience some RF and learn to use cw-tx , cw-rx , antenna, etc But there is a penalty to simplicity. Only a single frequency. You are tied to a single freq, I have a dream to make a small portable full working airworthy cw transceiver using xtal. Similar to MUZO.
I am making two receivers using cheap and easily found 3.579mhz, 7.159mhz, 14.318mhz xtals for band 40meter and 20 meter.
cw tx using 7.159mhz for 40 meter and 14.318mhz for 20 meter. I have made a pcb pattern. No hole. You place the components on pcb and its done.
have a look
But there is a gap between something called pixie to R7 Dayton receiver. Even simple than a dc receiver, which a novice or a new entrant in ham radio can build without any problem and experience some RF and learn to use cw-tx , cw-rx , antenna, etc But there is a penalty to simplicity. Only a single frequency. You are tied to a single freq, I have a dream to make a small portable full working airworthy cw transceiver using xtal. Similar to MUZO.
I am making two receivers using cheap and easily found 3.579mhz, 7.159mhz, 14.318mhz xtals for band 40meter and 20 meter.
cw tx using 7.159mhz for 40 meter and 14.318mhz for 20 meter. I have made a pcb pattern. No hole. You place the components on pcb and its done.
have a look
Parts list
ITR40-ITR20
Sr No |
Item No. |
Value
|
Note
|
---|---|---|---|
1 |
Q1 |
BC549C |
|
2 |
R1 |
2K2 |
|
3 |
R2 |
1K |
|
4 |
R3 |
220 |
|
5 |
R4 |
100 |
|
6 |
R5 |
10 |
|
7 |
R6 |
10 |
|
8 |
C1 |
0.1 |
|
9 |
C2 |
0.1 |
|
10 |
C3 |
100,25V |
|
11 |
C4 |
33P |
|
12 |
C5 |
33P |
|
13 |
C6 |
33P |
|
14 |
Q2 |
BF494 |
|
15 |
Q3 |
BC549C |
|
16 |
R7 |
10K |
|
17 |
R8 |
47K |
|
18 |
R9 |
470 |
|
19 |
R10 |
4K7 |
|
20 |
R11 |
10 |
|
21 |
C8 |
0.1 |
|
22 |
R15 |
470 |
|
23 |
R20 |
470 Preset |
|
24 |
D1 |
1N4148 |
|
25 |
D2 |
1N4148 |
|
26 |
C13 |
100p |
|
27 |
Q4 |
BC547 |
|
28 |
R12 |
100K |
|
29 |
R13 |
2K2 |
|
30 |
R14 |
100 |
|
31 |
C9 |
100p |
|
32 |
C10 |
100p |
|
33 |
C11 |
33p |
|
34 |
C12 |
0.1 |
|
35 |
Q5 |
|
|
36 |
R16 |
2K2 |
|
37 |
C14 |
0.1 |
|
38 |
C15 |
10, 25 |
|
39 |
C16 |
100p |
|
40 |
R17 |
1M |
|
41 |
R18 |
4K7 |
|
42 |
C17 |
10,25 |
|
43 |
R19 |
10 |
|
That's it folks.
Nice efforts Inderjit......but you can attain frequency agility with a ceramic resonator vxo. And simplicity and minimalism is synonymous with qrp. Keep simple and no nonsense homebrewing alive.......I have been doing that since 1982 now I have incepted a blog too.......
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