SPECTRUM COMMUNICATIONSQuality English products hand-crafted to order |
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COMPONENTS - 26 March 2024Proprietor;- Antony Nailer HNC BA G4CFY 12 WEATHERBURY WAY, DORCHESTER, DORSET, DT1 2EF, ENGLAND Phone UK 01305 262250 International 0044 1305 262250 You can pay by card or to g4cfy@talktalk.net via Paypal, or direct to my bank Santander, Spectrum Communications, sort code 09-01-29, account 67273308. For multiple quantities or multiple items, please email for a quote or for a Paypal money request. You can also obtain many of my products from my Ebay shop https://ebay.co.uk/str/Spectrum-Comms PRICES ARE UP TO DATE The Spectrum CFJ455K5 ceramic filter is now available and also modules to fit in the Kokusai Filter used in the KW2000 transceiver and related products. Each module is aligned ready to fit and use. Send me an email to order one. |
P&P on all orders £3.10 minimum, otherwise according to weight or size, email for a quote.
CONTENTS
| PTFE Feedthroughs | Ferrite Binocular core | Field Effect Transistors, junction type |
| Polyvaricon Tuning Capacitors | Ceramic 2 pole 5 way Switch | Dual Gate Mosfets, 40673, 3N201, etc |
| Spectrum 10mm Coil (TOKO replacements) | Power Relay | IF Filters, crystal, ceramic, & ladder |
| Capacitors, fixed and trimcap | Resistors, fixed and trimpot | Crystals, new & S/H, HC18U, HC49U, etc |
| Dust Iron Toroidal Cores | Diodes, signal, varicap, zener, rectifier | Integrated Circuit, Op Amps, & RF/IF, etc |
| Ferrite Toroidal Cores | Transistors, small signal, AF, IF, RF power | Valves, B7G, B9A, & Octal |
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PTFE Feedthrough. High quality silver plated PTFE feedthrough to fit into panels up to 1/8" (3.2mm) thick. Flashover voltage at sea level 4kV. Top pin 0.04" (1mm) diameter 0.19" long. Bottom pin 0.04" (1mm) diameter 0.17" long. Fits into 3.5mm hole. Price 40p each, any quantity. P&P £3.10 |
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POLYVARICONSPolyvaricons 280pF + 280pF + 20pF + 20pF, size 22x22x18mm with 18mm long 6mm diameter tuning shaft. Price £2.00 each, P&P £3.10 quantity 1-6. Polyvaricons 160pF+65pF, size 21x21x10.5mm with 18mm long 6mm diameter tuning shaft. Price £1.75 each, P&P £3.10 any quantity 1-6. |
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NEW HIGH PRECISION HIGH STABILITY SPECTRUM 10mm RF/IF/OSC COILS
These coils supplement the existing Spectrum coils and are distinguished by an extra H in the purchase code. They are matt tin plated bras instead of bright nickel plated brass. The tuning range is smaller and the inductance tolerance and temperature coefficient are much tighter. Price 1-99 £1.00, 100+ £0.80. P&P £3.10 min.
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L uH |
TYPE |
uH min |
uH max |
Q |
F MHz |
T 1-2 |
T 2-3 |
T 1-3 |
T 4-6 |
|
0.6 |
0u6HL |
0.4 |
0.9 |
60 |
50 |
3 |
3 |
6 |
1 |
|
1.2 |
1u2HL |
0.7 |
1.4 |
69 |
28 |
2 |
6 |
8 |
1 |
|
1.2 |
1u2HH |
0.7 |
1.4 |
66 |
28 |
4 |
4 |
8 |
2 |
|
1.7 |
1u7HL |
1.0 |
2.4 |
47 |
14 |
2 |
8 |
11 |
1 |
|
2.6 |
2u6HL |
1.9 |
4.5 |
57 |
10.7 |
3 |
11 |
14 |
1 |
|
2.6 |
2u6HF |
1.9 |
4.6 |
57 |
10.7 |
7 |
7 |
14 |
2 |
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2.6 |
2u6HH |
1.8 |
4.6 |
57 |
10.7 |
5 |
7 |
12 |
3 |
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5.3 |
5u3HL |
2.9 |
8.2 |
58 |
7 |
5 |
15 |
20 |
1 |
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5.3 |
5u3HH |
2.8 |
8.2 |
56 |
7 |
10 |
10 |
20 |
4 |
|
11 |
11uHL |
6.7 |
17.6 |
46 |
3.6 |
7 |
23 |
30 |
2 |
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23 |
23uHL |
11.7 |
28.6 |
52 |
1.9 |
9 |
31 |
40 |
3 |
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45 |
45uHL |
24.6 |
62.8 |
62 |
1.9 |
14 |
42 |
56 |
3 |
|
90 |
90uHL |
47.2 |
112.0 |
68 |
1 |
19 |
57 |
76 |
5 |
SPECTRUM 10mm RF/IF COILSSpectrum 10mm coils, replacements for popular TOKO coils. These coils are ideal for RF and IF stages but not suitable for high stability oscillator circuits. Prices 1-99 80p each, 100+ 65p each. P&P £3.10 minimum. |
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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 |
| 0.6 | 0u6H | 50 | 3 | 3 | 6 | 1 | 75 | 14137 | 3534 | 3534 | 392 | ||
| 1.2 | 1u2L | 28 | 2 | 6 | 8 | 1 | 85 | 17944 | 10093 | 1122 | 280 | ||
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1.2 |
1u2H/1R2 |
3335R |
0 |
28 |
4 |
4 |
8 |
2 |
85 |
17944 |
4486 |
4486 |
1121 |
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1.7 |
1u7L |
4612 |
0 |
14 |
2 |
8 |
10 |
1 |
45 |
6729 |
4306 |
269 |
67 |
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2.6 |
2u6DC |
586 |
82 |
10.7 |
0 |
0 |
12 |
0 |
100 |
17479 |
0 |
0 |
0 |
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2.6 |
2u6L-I |
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10.7 |
3 |
11 |
14 |
1 |
85 |
14857 |
681 |
9172 |
75 |
| 2.6 | 2u6L-R | 10.7 | 11 | 3 | 14 | 1 | 85 | 14857 | 9172 | 681 | 75 | ||
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2.6 |
2u6FC |
3892 |
82 |
10.7 |
7 |
7 |
14 |
2 |
80 |
13983 |
3495 |
3495 |
285 |
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2.6 |
2u6HC |
3893 |
82 |
10.7 |
7 |
7 |
14 |
3 |
80 |
13983 |
3495 |
3495 |
642 |
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5.0 |
5u0L |
3337R |
0 |
7 |
2 |
23 |
25 |
3 |
50 |
10995 |
70 |
9306 |
158 |
| 5.3 | 5u3L | 0 | 10.7 | 15 | 5 | 20 | 1 | 85 | 19814 | 11145 | 1238 | 49 | |
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5.3 |
5u3H |
3334R |
0 |
7 |
10 |
10 |
20 |
4 |
85 |
19814 |
4953 |
4953 |
792 |
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9 |
9uH |
2027 |
0 |
5 |
3 |
0 |
28 |
5 |
70 |
19792 |
227 |
0 |
631 |
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11 |
11uL |
0 |
3.6 |
23 |
7 |
30 |
2 |
80 |
19905 |
1083 |
11699 |
88 |
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23 |
23uL | 0 | 1.9 | 11 | 37 | 48 | 3 | 50 | 13728 | 8156 | 720 | 53 | |
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45 |
45u0L |
3333 |
0 |
1.9 |
42 |
14 |
56 |
3 |
60 |
32232 |
2014 |
18130 |
92 |
| 90 | 90u0L | 0 | 1 | 57 | 19 | 76 | 5 | 65 | 36756 | 20675 | 2297 | 159 | |
| 105 | 105u0L | 10E | 0 | 1 | 42 | 14 | 56 | 3 | 85 | 66759 | 37551 | 4172 | 191 |
Inductance, frequency, and capacitance guide.
| 0.6uH | F MHz | 70 | 50 | 29 | 21 | 11uL | F MHz | 10 | 7 | 3.65 | 1.84 | |
| C pF | 8p2 | 18 | 56 | 82 | C pF | 22 | 47 | 180 | 680 | |||
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1.2uH |
F MHz |
29 |
24 |
21 |
18 |
23uH | F MHz | 7 | 5.3 | 3.65 | 1.85 | |
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C pF |
27 |
39 |
47 |
68 |
C pF | 22 | 39 | 82 | 330 | |||
| 1.7uH | F MHz | 21 | 18 | 14 | 10.7 | 45uH | F MHz | 5 | 3.65 | 1.85 | 1 | |
| C pF | 33 | 47 | 82 | 120 | C pF | 22 | 47 | 180 | 560 | |||
| 2.6uH | F MHz | 18 | 14 | 10.7 | 9 | 90uH | F MHz | 3.65 | 1.85 | 1 | 0.455 | |
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C pF |
33 |
47 |
82 |
120 |
C pF | 22 | 82 | 330 | 1500 | |||
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5.3uH |
F MHz |
14 |
10 |
7 |
3.8 |
105uH | F MHz | 3.65 | 1.85 | 1 | 0.455 | |
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C pF |
27 |
47 |
100 |
330 |
C pF | 18 | 68 | 270 | 1200 |
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VHF 10mm COILS Replacements for TOKO MC120 types 100112 and 100076. Spectrum coils SC112 70nH, and SC076 220nH. Prices 1-99 80p each, 100+ 65p each. P&P £3.10 minimum. |
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CAPACITORS
Ceramic 50V NPO: 1pF to 390pF, all 20p each.
Ceramic multilayer 50V CGO 470pF, 560pF, 680pF, and 820pF all 20p each.
Ceramic 50V N150: 30pF, 47pF, 56pF, 68pF, 180pF, 1nF, 1n5 2n2, 3n3, 4n7, 10nF, 22nF, 47nF, all 20p each.
Ceramic 50V Hi-K: 1nF, 1n5, 2n2, 3n3n, 4n7, 10nF, 22nF, 47nF, 100nF, 20p each.
Ceramic N150: 10nF 500V, 100nF 50V 20p each.
Electrolytic radial small 25V: 1uF, 2u2, 4u7, 10uF, 22uF, 47uF, 100uF, all 20p each.
Electrolytic radial medium 25V: 220uF, 470uF, 40p each. 1000uF 75p.
Electrolytic axial 2200uF 35V £2.00. 4700uF 35V £3.00.
Mica 350V 10pF, 33pF, 39pF, 47pF, 68pF, 100pF, 120pF, 330pF, 680pF & 1nF all £1.00 each.
Polyester block 7.5x7.5x2mm 63V: 1nF, 2n2, 4n7, 10nF, 22nF, 47nF, 100nF, all 15p each. 220nF & 470nF 30p each.
P&P £3.10 UK minimum.
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TRIMCAPS Murata style 2-5pF blue, 3-10pF white, 5.5-20pF red, 6.5-30pF green, 12-50pF yellow; 65p each any quantity. Tetfer 10pf & 15pF £1.00 ea; Phillips/Vishay 5.5-65pF yellow; £2.30 each. P&P £3.10 minimum. |
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DUST IRON & FERRITE TOROIDAL & BINOCULAR CORES
TOROIDAL CORESDust Iron Cores, T37-2 40p, T50-2 45p, T68-2 55p, T130-2 £2.00. T37-6 45p, T50-6 65p, T68-6 95p, T130-6 £3.25, P&P at cost £2.30 minimum. T200-2 £5 P&P £3.50. Design Data sheet Ferrite Cores, FT37-43 40p, FT50A-43 75p, FT37-61 85p, FT50A-61 £1.30. Ferrite bead RL452, like FX1115, 4mm OD, 5mm long, 2mm ID, 10-99 8p ea, 100+ 6p ea. P&P at cost £2.30 min. FT140-43 £3.00 ea. P&P £3.50 (1-5qty). BINOCULAR FERRITE CORESFerrite Binocular Cores, BN-Width-Length-Ferrite: BN1307-43 55p, BN1310-43 75p, BN1313-43 80p, BN2025-43 £2.25, BN1307-61 80p, BN1310-61 £1.00, BN1313-61 1.25p, P&P at cost £2.30 min. Design Data Sheet |
Cores are painted yellow for type 43 and blue for type 61 so you will never get them mixed up again.
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CERAMIC SWITCH Twin wafer each with two single pole 5 way switches, non shorting. Suitable for legal limit amplifiers and antenna tuning units. Picture shows the single wafer version. Price £6.50 each plus £5.70 UK P&P. |
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POWER RELAY Double pole double throw. Suitable for HF linear amplifier up to 2kW rating. Supplied with 4mm chassis fixing screw. Coil 12/13.5V at 140 Ohm. Size 43(L) x 30(W) x 30(H). £3.00 each plus £3.50 P&P. |
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RESISTORS & TRIMPOTS 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 75p each. Trimpot 100mW vertical: 470, 1K, 2K2, 4K7, 10K, 25K, 47K, 100K, 470K, all 75p each. |
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CONNECTORS PL259, N type, BNC, microphone connectors etc., click Connectors
DIODES P&P £3.10 minimum.
Rectifier: 1N4001 10p, 1N4007 10p, 1N5401/6 30p.
Germanium detector diodes like OA81, IN60A, slope resistance 62-230 Ohms, packs of four £3.00.
Germanium diodes for ring mixers, slope resistance 42 Ohms, matched set of four £3.00.
Small Signal: BAT42 Schottky 15p, FH1100 UHF 25, 1N4148 5p.
Varicap BB505G 2-20pF 75p, BB809 10-40pF 75p, KV1236 20-420pF £4.00.
Zeners 100mW: 2v7, 5v1, 6v2, 8v2, 9v1, 10v, 16v, all 10p.
TRANSISTORS P&P £3.10 minimum.
Bipolar AF: BC109C, BC548B, BC148B, BC157, BC557, BC182L, all 15p each.
Bipolar RF: BF195, BF199, 25p each, 2N2369A/BSX20 50p, 2N918 2N5179 £1.00, 2N4427 £1.50.
Bipolar Power RF: KT290b like 2N6080, MRF239, SD1274 £25.00 each. BLW60 £30.00.
FETS TO92 package
| TYPE | Freq MHz | Gfs mmhos | Vgs off | Idss mA | NF dB | PRICE |
| BF256B | 100 | >4.5 | -3 to -4 | 6-13 | 1 | 50p |
| J304 | 100 | 4.5-7.5 | -2 to -6 | 5-15 | 1.7 | 75p |
| J309 | 450 | 10-20 | -1 to -4 | 12-30 | 2.7 | 75p |
| J310 | 450 | 8-18 | -2 to -6.5 | 24-60 | 2.7 | 75p |
MOSFETS
| TYPE | PACKAGE | Freq MHZ | Gfs mmhos | Idss mA | NF dB | PRICE £ |
| 3SK45 | TO72 | 200 | 14 | 17 | 2.2 | 3.00 |
| 3N201 | TO72 | 300 | 12.8 | 15 | 2.0 | 3.00 |
| 40673 | TO72 | 400 | 12 | 15 | 3.5 | 3.00 |
| BF964 | SOT103 | 800 | 18.5 | 10 | 1.0 | 1.50 |
FILTERS
455kHz 2 pole mechanical filter, -6dB Bw 10kHz, -30dB Bw 200kHz, term 2k, HCFM2 455D 50p.
455kHz 4 pole piezo-ceramic, -6dB Bw 6kHz, -40dB Bw 18kHz, term 2k, LT455HTW £2.50.
10.7MHz 2 pole crystal filter-3dB Bw 7.5kHz, -20dB Bw 36kHz, term 1k8 & 6pF, 10G7A £3.00.
10.7MHz 2 pole crystal filter, -3dB Bw 15kHz, -15dB Bw 50kHz, term 3k & 2pF,10M15A £3.00.
9MHz & 10.7MHz SSB IF FILTERA 6 pole crystal ladder SSB filter with impedance matching toroids. Termination choice 50 Ohms or 820 Ohms and less than 5pF. Bandwidth 2.3kHz at -6dB,Shape factor 2.6:1. Insertion loss 2dB. PCB size 60 x 27 x 15mm. State which intermediate frequency is required when ordering. Price £23.00. UK P&P £3.60. EU P&P £10.65. World P&P £12.85. Carrier crystals £3.00 each. |
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CRYSTALS Link P&P £3.10 per order.
New stock HC49/U, parallel resonant mode 25pF or 30pF load, series resonant third overtone infinite capacitance, all at £3.00.
INTEGRATED CIRCUITS IC list
VALVES, B7G, B8A, B9A, Octal, B8B, and pins Valve list Prices range from £2 to £15. UK P&P at cost.
