SPECTRUM COMMUNICATIONS

Quality English products hand-crafted to order

       

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GENERAL ACCESSORIES 

20 August 2023

Proprietor;- Antony Nailer HNC BA G4CFY 

12 WEATHERBURY WAY, DORCHESTER, DORSET, DT1 2EF, ENGLAND

Phone UK 01305 262250 International 0044 1305 262250. Email: g4cfy@talktalk.net  

 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

 

CONTENTS

BNC Switch Boxes, 2 way, 3 way, & 4 way
Coax Cable Tester for BNC & PL259
Capacitance Meter, 1pF to 100nF
HF Wide Range Power Meter 10W, 100W, 500W
Morse Practice Oscillator
Two Tone Tester, for transmitter alignment
TVI Filters, high pass 450MHz and 550MHz

 

BNC SWITCH BOXES FOR VIDEO OR SMALL SIGNAL RF WORK

BNC 2 Way Switch. One receiver to two antennas, or two cameras to one video recorder. Isolation to 140MHz , >30dB. Box size 60x55x30mm. Ready built £31.20 UK, £40.40 EU, £48.50 World, including tracked carriage.

BNC 3 Way Switch. One receiver to three antennas, or 3 cameras to one video recorder.  Isolation to 80MHz >30dB. Box size 80x55x25mm. Ready built £32.70 UK, £41.90 EU, £50.00 World, including tracked carriage.

BNC 4 Way Switch.  One receiver to four antennas, or four cameras to one video recorder. Isolation between ports >36dB to 150MHz. Box size 115x63x30mm. Ready built £38.75 UK, £48.40 EU, £56.00 World, including tracked carriage.

 

COAX LEAD TESTER

This handy tester allows cables with PL - PL, or BNC - BNC, or PL - BNC to be tested inner to inner, outer to outer, inner to outer, and also a single end PL or BNC inner to outer.  It should be intuitive, with a wanted connection showing the LED ON and the unwanted connection with the LED OFF.  Price £30.00 UK, £38.50 EU, £42.30 World including tracked carriage.

 

 

CAPACITANCE METER

Direct linear reading in 5 ranges, 100pF, 1nF, 10nF, 100nF, and 1uF full scale.  Supplied in an ABS box.  12/13.5V operation at 10mA.  Accuracy within +/-2%.  With 13cm (5") probe wires and connectors.  

ABS box kit £47.50 UK, £56.00 EU tracked, £60.00 World. Ready built £62.50 UK, £71.50 EU, £76.00 World.  Price include tracked carriage.

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HF WIDE RANGE POWER METER

1.8-52MHz in four power ranges 1, 10, 100, and 200W with an accuracy of +/-5%.  Thruline concept with a toroidal current transformer sampling element.  Switched forward and reverse reading.  SO239 connectors. Each unit is individually calibrated on each range. 

Ready Built and calibrated £76.00 UK, £86.50 EU, £91.75 World, including tracking.

 

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MORSE PRACTICE OSCILLATOR

A stand alone Morse Practice Oscillator supplied either as a kit of parts to build the board shown in the picture as well as a drilled and labelled box, and all associated hardware, or ready built.  The boxed kit includes 1/4" jack socket for the Morse key, and 3.5mm jack socket for headphones, a SPST toggle switch, volume control, LED and holder, internal loudspeaker, PP3 battery holder and the necessary nuts and screws.  The kit even includes various coloured hookup wire and four stick on feet.  The battery shown in the pictures is NOT included.

PCB & Hardware kit £35.50 UK, £43.00 EU, £45.50 World.  Ready Built £53.00 UK, £61.00 EU, £64.80 World.

 

TWO TONE TESTER

A vital test unit for power output, envelope, and carrier suppression testing of AM, DSB, and SSB transmitters. Either 1600Hz or 1850Hz tones or both. Diecast box size 102x84x40mm.  

Box kit with all hardware £35.00 UK, £41.50 EU, £46.80 World, tracked.  Ready built £51.50 UK, £59.50 EU, £63.30 World, including tracked carriage.

TTO small.jpg

 

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TVI HIGH PASS FILTERS HPF450 & HPF550

The HPF450 has passband with a -6dB point at about 450MHz.  It rejects signals from DC to 200MHz by 60dB.  This includes HF, CB, 6m, 4m, 2m, marine,  & taxi.  Passband ripple 455-1000MHz 4dB. The HPF550 is a modified version to allow digital signals above 550MHz to pass and to reduce breakthrough by analogue signals at the bottom of the band. Price £15.50 UK, £17.50 EU, £18.50 World. Including P&P.