This is the third part of xtal filter making.
After making the R7 Dayton receiver my confidence grew. This pcb was gifted by VU2UPX. Thanks charu. This whole experience opened my blocks for the filters..From lamington road I, recently bought few 10 Mhz. xtals costing around rs300/- for 30 pieces. How to measure ! Just see the part-1 and part-2.
Well I can get only 2 set of 4 xtals and 2 set of 3xtals. a, b, c, d denotes the selected filter. a0 denotes the oscillator.
OK. I am happy. If I have bought the 100xtals beg of KDS xtal than it might have yielded me good results.
After making the R7 Dayton receiver my confidence grew. This pcb was gifted by VU2UPX. Thanks charu. This whole experience opened my blocks for the filters..From lamington road I, recently bought few 10 Mhz. xtals costing around rs300/- for 30 pieces. How to measure ! Just see the part-1 and part-2.
srno
|
xtal
|
open
|
close
|
diff
|
||
12
|
24
|
999950
|
999634
|
316
|
||
17
|
2
|
999948
|
999640
|
308
|
6
|
ao
|
14
|
3
|
999957
|
999641
|
316
|
1
|
a
|
15
|
18
|
999953
|
999644
|
309
|
3
|
a
|
6
|
8
|
999965
|
999644
|
321
|
0
|
|
21
|
17
|
999958
|
999645
|
313
|
1
|
a
|
18
|
7
|
999959
|
999645
|
314
|
0
|
a
|
19
|
23
|
999949
|
999648
|
301
|
3
|
|
2
|
20
|
999955
|
999650
|
305
|
2
|
bo
|
8
|
11
|
999961
|
999651
|
310
|
1
|
b
|
22
|
6
|
999964
|
999651
|
313
|
0
|
b
|
5
|
12
|
999956
|
999653
|
303
|
2
|
b
|
20
|
25
|
999959
|
999653
|
306
|
0
|
|
27
|
22
|
999953
|
999654
|
299
|
1
|
c
|
11
|
10
|
999959
|
999654
|
305
|
0
|
c
|
29
|
27
|
999960
|
999654
|
306
|
0
|
c
|
13
|
16
|
999965
|
999654
|
311
|
0
|
c
|
3
|
21
|
999960
|
999655
|
305
|
1
|
c
|
25
|
14
|
999965
|
999658
|
307
|
3
|
|
9
|
13
|
999964
|
999661
|
303
|
3
|
|
26
|
26
|
999973
|
999665
|
308
|
4
|
|
7
|
1
|
999960
|
999666
|
294
|
1
|
do
|
10
|
15
|
999960
|
999670
|
290
|
4
|
d
|
4
|
4
|
999963
|
999670
|
293
|
0
|
d
|
24
|
19
|
999964
|
999670
|
294
|
0
|
d
|
16
|
0
|
999970
|
999673
|
297
|
3
|
|
28
|
28
|
999979
|
999673
|
306
|
0
|
|
23
|
5
|
999978
|
999680
|
298
|
7
|
|
1
|
9
|
999967
|
999696
|
271
|
16
|
Well I can get only 2 set of 4 xtals and 2 set of 3xtals. a, b, c, d denotes the selected filter. a0 denotes the oscillator.
OK. I am happy. If I have bought the 100xtals beg of KDS xtal than it might have yielded me good results.
Happy filtering.