| SPECTRUM
COMMUNICATIONS
EST. OCTOBER 1978. Proprietors;- Mr A.J. Nailer HNC BA G4CFY, Mrs J.R. Nailer. 12 WEATHERBURY WAY, DORCHESTER, DORSET, DT1 2EF, ENGLAND Phone & Fax UK 01305 262250 International 0044 1305 262250 Components 27 November 2009 Prices exclude UK Carriage. All popular credit cards accepted. Cheque or Postal Order payable to Spectrum Communications. Technical & order queries can be sent to tony@spectrumcomms.co.uk
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Postage and Packing on all orders £1.00 unless otherwise stated.
CAPACITORS
Ceramic 50V NPO: 1pf to 390pF, all 10p each.
Electrolytic radial small 25V: 1uF to 220uF, all 20p each.
Mica 350V 10pF, 33pF, 47pF, 68pF, 100pF, 120pF, 200pF, 330pF, all 75p. 680pF & 1nF both £1.00.
Polyester block 7.5x7.5x2mm 63V: 1nF, 2n2, 4n7, 10nF, 22nF, 47nF, 100nF, all 15p each.
Trimcap: Murata 5-30pF green 50p each. Phillips/Vishay 5.5-65pF yellow 75p.
Tetfer 10pF, 15pF, £1.00 each.
RESISTORS
1/4W carbon film: 1 Ohm to 1M Ohm, all 2p each,
Trimpot 100mW horizontal: 100, 220, 470, 1K, 2K2, 4K7, 10K, 47K, 100K, 470K, 1M, all 25p each.
Trimpot 100mW vertical: 470, 1K, 2K2, 4K7, 10K, 25K, 47K, 100K, 470K, all 25p each.
DIODES
1N4148 5p, 1N5406 30p, Shottky BAT42 25p, Varicap BB809 75p.
Zeners 100mW: 2v7, 5v1, 6v2, 8v2, 9v1, 10v, 16v, all 20p.
TRANSISTORS
Bipolar AF: BC548B, BC148B, BC157, BC557, BC182L, all 15p each.
Bipolar RF: BF195, BF199, 25p each, 2N2369A/BSX20 50p each, 2N4427 £1.50 each.
Bipolar Power RF: 2N6080, BLY87C £20.00, MRF239, BLY89C, BLW60C £25 each. P&P £2.00
FET: BF256A, J309, both 35p each.
MOSFET: 3N201 £2.25, BF964 75p.
FILTERS
2 pole mechanical HCFM2 455D 50p, 2 pole crystal 10M15A £3.00, 4 pole ceramic LT455HTW £2.50.
6 pole ladder, 2.4KHz BW SSB 9 or 10.7MHz centre frequency £15.00.
10mm 10K COILS
TOKO original coils and pin compatible Spectrum types, now available as listed in the first table.
Value |
TOKO |
Spectrum |
1.2uH |
3335R |
1u2H |
1.7uH |
4612 |
- |
2.6uH |
586 |
2u6D |
2.6uH |
1509 |
2u6LC |
2.6uH |
3892 |
2u6F |
2.6uH |
3893 |
2u6H |
5.3uH |
~3334/7 |
5u3L |
5.3uH |
~3334/7 |
5u3H |
9uH |
2027 |
- |
11uH |
- |
11u0L |
23uH |
~2926 |
23u0L |
45uH |
3333R |
45u0L |
Inductance, frequency, and capacitance guide.
1.2uH |
F MHz |
29 |
24 |
21 |
18 |
|
C pF |
27 |
39 |
47 |
68 |
||
2.6uH |
F MHz |
21 |
18 |
14 |
10.7 |
9 |
C pF |
22 |
33 |
47 |
82 |
120 |
|
5.3uH |
F MHz |
14 |
10 |
7 |
3.65 |
|
C pF |
27 |
47 |
100 |
360 |
||
11uH |
F MHz |
10 |
7 |
3.65 |
1.9 |
|
C pF |
22 |
47 |
180 |
640 |
||
23uH |
F MHz |
7 |
5.25 |
3.65 |
1.9 |
1 |
C pF |
22 |
39 |
82 |
305 |
1100 |
|
45uH |
F MHz |
3.65 |
1.9 |
1 |
0.5 |
|
C pF |
42 |
160 |
560 |
2200 |
||
Suffix L is low impedance secondary and suitable for aerial connection. H is high impedance secondary suitable for interstage use and Hartley oscillators. Suffix D is discriminator, F is 300 Ohm filter matching, C includes a capacitor in parallel with the main winding. The 2.6uH coils can have the capacitor removed and then be used up to 21MHz.
L uH |
TYPE |
TOKO |
C pF |
F MHz |
T 1-2 |
T 2-3 |
T 1-3 |
T 4-6 |
Q |
Z pri |
Z (1-2) |
Z (2-3) |
Z sec |
1.2 |
1u2H |
3335 |
0 |
28 |
4 |
4 |
8 |
2 |
85 |
17944 |
4486 |
4486 |
1121 |
1.7 |
1u7H |
4612 |
0 |
14 |
0 |
0 |
11 |
3 |
45 |
6729 |
0 |
0 |
500 |
2.6 |
2u6DC |
586 |
82 |
10.7 |
0 |
0 |
12 |
0 |
100 |
17479 |
0 |
0 |
0 |
2.6 |
2u6LC |
1509 |
82 |
10.7 |
7 |
7 |
14 |
1 |
85 |
14857 |
3714 |
3714 |
75 |
2.6 |
2u6FC |
3892 |
82 |
10.7 |
7 |
7 |
14 |
2 |
80 |
13983 |
3495 |
3495 |
285 |
2.6 |
2u6HC |
3893 |
82 |
10.7 |
7 |
7 |
14 |
3 |
80 |
13983 |
3495 |
3495 |
642 |
5.3 |
5u3L |
0 |
7 |
5 |
15 |
20 |
1 |
85 |
19814 |
1238 |
11145 |
49 |
|
5.3 |
5u3H |
~3334/7 |
0 |
7 |
10 |
10 |
20 |
4 |
85 |
19814 |
4953 |
4953 |
792 |
9 |
9u0H |
2027 |
0 |
5 |
3 |
0 |
28 |
5 |
70 |
19792 |
227 |
0 |
631 |
11 |
11u0L |
0 |
3.6 |
7 |
23 |
30 |
2 |
80 |
19905 |
1083 |
11699 |
88 |
|
23 |
23u0L |
~2926 |
0 |
1.9 |
11 |
37 |
48 |
3 |
50 |
13728 |
720 |
8156 |
53 |
45 |
45u0L |
3333 |
0 |
1.9 |
14 |
42 |
56 |
3 |
60 |
32232 |
2014 |
18130 |
92 |
Price |
1-9 |
75p, |
10-24 |
60p, |
25-99 |
45p, |
100+ |
30p |
CRYSTALS
HC49/U new stock, parallel mode 25pF: 8.9985, 9.0015, 10.6985, 10.7015, 22.0000, all £4.00.
HC49/U new stock, series third overtone: 31.3333, 37.5000, 38.4667, 38.6667, 42.0000, all £4.00.
HC18/U, HC25/U, & HC49/U used, parallel mode 25pF or 30pF loading: 1.0000, 3.4010, 3.6350, 3.5795, 3.8500, 3.8570, 5.0000, 5.9624, 7.3600, 8.2550, 8.4640, 8.8315, 8.8360, 8.8450, 9.0000, 9.2160, 9.2850, 9.2865, 9.4550, 9.4420, 9.8167, 9.8275, 9.8304, 9.9500, 10.0525, 10.1600, 10.1650, 10.2000, 10.2040, 10.2150, 10.2370, 10.2400, 10.2750, 10.2775, 10.3588, 10.4010, 10.4220, 10.4663, 10.5130, 10.5910, 10.6262, 10.6375,10.6445, 10.6920, 10.6950, 10.7391, 10.9385, 10.9400, 10.9415, 11.0000, 11.0592, 11.0750, 11.1125, 11.2625, 11.2850, 11.3258, 11.4360, 11.4758, 11.6188, 11.6806, 12.0000, 12.1250, 12.0830, 12.0080, 12.3333, 12.3583, 12.4416, 12.5375, 12.5833, 12.6335, 12.6583, 12.8220, 12.8270, 12.8572, 12.8583, 12.8882, 13.1125, 13.1166, 13.1310, 13.1916, 13.3385, 13.3395, 13.3583, 13.3604, 13.9910, 13.9960, 13.9970, 14.0000, 14.0333, 14.1778, 14.1916, 14.2415, 14.4277, 14.4551, 14.5250, 14.5800, 14.6500, 14.7500, 14.8583, 14.8889, 14.910, 15.0380, 15.2222, 15.2262, 15.3583, 15.4500, 15.4800, 15.4825, 15.4830, 15.4833, 15.4880, 15.5250, 15.5563, 15.6500, 15.6667, 15.7675, 15.8100, 15.8335, 15.8362, 15.8366, 15.9300, 15.9380, 16.0380, 16.1030, 16.1444, 16.1916, 16.2600, 16.5063, 16.5100, 16.9150, 16.9613, 17.0150, 17.0650, 17.3694, 18.0563, 18.3000, 18.8319, 18.6000, 18.7500, 18.9340, 19.0916, 19.6050, 19.8550, 19.8800, 19.9150, 20.0000, 20.1050, 20.1150, 20.3275, 20.3300, 20.3400, 20.3800, 20.4230, 20.5325, 20.5550, 20.7425, 20.8475, 20.8625, 21.1844, 21.7225, 22.4440, 22.5700, 23.2979, 23.3900, 23.4000, all £2 each.
HC18/U, HC25/U, & HC49/U used, series overtone, infinite capacitance: 24.6100, 25.5300, 26.5100, 30.7100, 32.0000, 35.2222, 35.4000, 36.7813, 37.0000, 37.6667, 38.5600, 39.2000, 40.5800, 40.6667, 41.6510, 43.3988, 43.5750, 44.1667, 46.2500, 49.6667, 50.6750, 50.9750, 52.1083, 63.6000, 66.4875, 69.2990, 78.075, 100.8375, all £2 each.
INTEGRATED CIRCUITS
Linear: S042P £2.50, TL074 £1.00, TL082 50p, TBA120S £1.00, LM324 £1.00, TCA440 £3.50, 555 50p, SA602 £3.00, 741 50p, TBA820M £1.25, TDA1001 £3.50, CA3189E £3.50, MC3359 £4.00, MC3403 £1.50.
Logic: 4011 40p, 4017 50p, 4046 60p, 4093 75p, 74HC04 50p, 74HC74 50p, 74HC390 60p, 74LS92 75p. MC145151P £6.00.