SPECTRUM COMMUNICATIONS

Components 20 December 2016

Please email or phone for a quote or to place an order by credit/debit card or for a Paypal money request. Purchase of several items is likely to make a saving on postage. Tel 01305 262250

Orders & quote requests to  jean@spectrumcomms.co.uk

Technical queries to  tony@spectrumcomms.co.uk

HOME AMATEUR AERIALS & CABLES TVI FILTERS
COMPONENTS LISTENER RADIO TEST EQUIPMENT CB RADIO BOARDS

      P&P on all orders 1.50 minimum, otherwise according to weight or size, email for quote.

BREAKING NEWS FT140-43 toroids now in stock. See toroids section below.

NEW PRODUCT   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. 1-24qty 1.25 each.  25-99qty 1.00 each. 100+ 0.75 each.  P&P 1.50.

PTFE FEEDTHROUGH

      

POLYVARICONS

Polyvaricons. 266pF + 266pF + 20pF + 20pF 22x22x18mm.  Also 66+155pF 21x21x10.5mm. Tuning shaft 6mm diameter 18mm long. Mounting screws 2.5mm with M3 nuts as spacers also.

1-24 1.75 each, 25-99 1.50 each, 100+ 1.25 each. P&P 1.50 min.

 

SPECTRUM 10mm 10K RF/IF COILS    

  Spectrum 10mm coils, replacements for popular TOKO coils.  Frequency, capacitance and inductance guide Link

Prices 1-24 80p each, 25-99 65p each, 100+ 50p each. P&P 1.50 minimum.

Spectrum coils small.jpg (9371 bytes)Coil.jpg (6121 bytes)

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

1.2

1u2H

3335

0

28

4

4

8

2

85

17944

4486

4486

1121

1.7

1u7L

4612

0

14

2

8

10

1

45

6729

4306

269

67

2.6

2u6DC

586

82

10.7

0

0

12

0

100

17479

0

0

0

2.6

2u6L

 

 

10.7

3

11

14

1

85

14857

3714

3714

75

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

23

7

30

2

80

19905

1083

11699

88

23

23u0L

~2926

0

1.9

37

11

48

3

50

13728

720

8156

53

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
125 125u0L 10E 0 1 42 14 56 3 85 66759 37551 4172 191

 

VHF 10mm COILS

Replacements for TOKO MC120 types 100112 and 100076. 

Spectrum coils SC112 70nH, and SC076 220nH.

Prices 1-24 80p each, 25-99 65p each, 100+ 50p each. P&P 1.50 minimum.

Coils.jpg

 

 

       CAPACITORS

       Ceramic 50V NPO: 1pF to 390pF, all 10p each.

       Ceramic multilayer 50V CGO 470pF, 560pF, 680pF, and 820pF all 10p each.

       Ceramic 50V N150: 30pF, 47pF, 56pF, 68pF, 180pF, 1nF, 1n5 2n2, 3n3, 4n7, 10nF, 22nF, 47nF, all    10p each.

       Ceramic 50V Hi-K: 1nF, 1n5, 2n2, 3n3n, 4n7, 10nF, 22nF, 47nF, 100nF, 10p 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, 200pF, 330pF, all 75p.       680pF & 1nF 1 each.

       Polyester block 7.5x7.5x2mm 63V: 1nF, 2n2, 4n7, 10nF, 22nF, 47nF, 100nF, all 15p each. 220nF & 470nF 30p each.

TRIMCAPS

Murata style 2-5pF blue, 3-10pF white, 5.5-20pF red, 6.5-30pF green, 12-50pF yellow;  70p each 1-9, 60p each 10-99, 50p each 100+. 

Tetfer 10pf & 15pF 1.00 ea;  Phillips/Vishay 5.5-65pF yellow; 1.50 each.  

           

DUAL GANG VARIABLE CAPACITOR

330+330pF with 3:1 reduction drive, and fixing screws.

10.00 plus 3.50 P&P

Dual gang cap small.jpg

      DUST IRON & FERRITE TOROIDAL & BINOCULAR CORES

 TOROIDAL CORES  Design Data sheet

Dust Iron Cores, T37-2 30p, T50-2 50p, T68-2 60p, T130-2     2.00, T37-6 30p,  T50-6 50p, T68-6 60p, T130-6 3.00, P&P at cost 1.50 minimum.   T200-2 5 P&P 3.50.

Ferrite Cores, FT37-43 35p, FT50-43 60p, FT50A-43 60p, FT37-61 60p, FT50-61 80p, FT50A-61 1.00.   Ferrite bead RL452, like FX1115, 4mm OD, 5mm long, 2mm ID, 1-9 10p ea, 10-99 8p ea, 100+ 6p ea. P&P at cost 1.50 min. FT140-43 4.00 ea. P&P 3.50 (1-5qty).

BINOCULAR CORES  Design Data sheet

Ferrite Binocular Cores, BN-Width-Length-Ferrite: BN1307-43 45p,  BN1310-43 50p, BN1313-43 55p, BN2025-43 4.00, BN1307-61 75p, BN1313-61 75p,  P&P at cost 1.50 min.

 

Ferrite cores small.jpg

    

Switch angle small.jpg (9745 bytes)

CERAMIC SWITCH 

Two wafers each with 2 pole 5 way switches, non shorting.  Suitable for legal limit amplifiers and antenna tuning units.  8.00 each plus 3.50 P&P.

      

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.

Relay small.jpg (11217 bytes)

  

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 30p each.

   Trimpot 100mW vertical: 470, 1K, 2K2, 4K7, 10K, 25K, 47K, 100K, 470K, all 30p each.

Resistors small.jpg (8258 bytes)

       CONNECTORS  PL259, N type, BNC, microphone connectors etc., click Connectors

       DIODES

       Rectifier: 1N4001 10p, 1N4007 10p,1N5401/6 30p. 

       Small Signal: BAT42 Schottky 15p, FH1100 UHF 25, 1N4148 5p. 

       Switching diodes: BA243 and BA482 20p, M1301 75p.    

       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.

       Diode bridge: W005M 1.00.  8A bridge 2.00.

       Diode ring mixer: HPF-506X-1 like SBL-1X 7.50.

       TRANSISTORS

       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 each. BLW60 30. P&P 2.00

       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 50p
J309 450 10-20 -1 to -4 12-30 2.7 50p
J310 450 8-18 -2 to -6.5 24-60 2.7 50p

       MOSFETS     

TYPE PACKAGE Freq MHZ Gfs mmhos Idss mA NF dB PRICE
3SK45 TO72 200 14 17 2.2 2.00
3N201 TO72 300 12.8 15 2.0 2.25
40673 TO72 400 12 15 3.5 2.50
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.

  10.7MHz 2 pole ceramic filter, -3dB Bw 50kHz, -20dB Bw 200kHz, term 330R, SFE107MT 1.20

  10.7MHz 2 pole ceramic filter, -3dB Bw 220kHz, -20dB Bw 350kHz, term 330R, SK107M5A0 1.20

  10.7MHz 2 pole ceramic filter, -3dB Bw 360kHx, -20dB Bw 720kHz, term 330R, SK107M0A0 1.20

  9 or 10.7MHz 6 pole crystal ladder SSB filter with impedance matching toroids. Bandwidth 2.3kHz at -6dB, Shape factor 2.6:1. Insertion loss 2dB.  Termination 560 Ohms and less than 5pF.  PCB size 60 x 27 x 15mm.  PCB Kit 15.50. PCB built 20.00.  Carrier crystals 3.00 each.  P&P 1.50.       

       CRYSTALS      Link       P&P 1.50 per order.

       New stock HC49/U, parallel resonant mode 25pF or 30pF load, series resonant third overtone infinite capacitance, all at 5.00. 

       Used or old stock HC18/U, HC25/U, & HC49/U, parallel mode 25pF or 30pF loading, 3rd overtone, 5th overtone and 7th overtone series     resonant 2.50 each.    

      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.