Radio Detectors ~ crystalreceiver.co.uk

PERIKON DETECTOR No1

This was made for Alan Reeves for his Westinghouse Crystal Receiver which was missing the detector. I mounted the finished detector on a base as I originally intended this to be used with other crystal receivers.I have fitted a Galena and Zincite Crystal to this but many combinations of crystals can be used.

It is essential to make a good electrical contact to the Zincite I used a very thin strip of sheet pewter which is a very soft metal and cushions the contact with the rather delicate Zincite.The whole crystal is held in place with a grub screw.

The Galena is held in place with 'Woods metal' another very soft metal alloy which melts at a lower temperature than Lead and Galena.

The two crystals are held in point contact by a spring loaded shaft and the pressure is adjustable with the Knurled screw.It is possible to rotate the crystals and move up and down and side to side on the crystal surfaces in a similar way to a Catswisker.

The Dark Oak stained box measure 6 inches x 4 inches The size of the detector was a bit of a challenge to make on my old lathe but i really enjoyed it.

Im looking forward to the next one of these projects as I find these devises very interesting. If research had continued on these instead of the thermionic valve we may have had the transistor in the 1920's.and computers by the 30's

Close Up View

	GALENA CRYSTAL HOLDER with fixing screws, insulators and solder tag also including a small piece of Galena (Lead Sulphide). The holder is ½ inch/12.5mm diameter and 3/8 inch/10mm deep. Suitable for woods metal or grub screw securing of crystal.Larger View Included Hardware	P/N 01-001 £5.99 Ea.
	CATSWHISKER DETECTOR with galena crystal. I made this in my workshop from Solid Brass Turned parts and finest Rosewood. The detector has a solid gold wire 'Catswhisker'used to tickle the crystal until you find the best reception. It works great with a little patience. Larger View	P/N 30-001 £50.00 Ea.
	PERIKON DETECTOR No1 The description is shown above. Larger View Close Up View	P/N 30-002 £100.00
	PERIKON DETECTOR No2 The description will be added soon Larger View	P/N 30-003 £100.00
	VERTICAL MOUNTED PERIKON DETECTOR No1 This detector holds two crystals in point contact in a clear tube. It has a knurled screw on top for fine adjustment of pressure. Larger View	P/N 30-004 £50.00
	ENCLOSED TICKLER DETECTOR #1 Larger View	P/N 30-005 £ POA
	CLAPP EASTHAM TYPE Larger View	P/N 30-006 £ POA
	COHERER No1 Larger View	P/N 30-007 £ POA
	FRENCH STYLE DETECTOR Larger View	P/N 30-008 £ POA
	GEOFF JAM JAR DETECTOR No1 Larger View	P/N 30-009 £ POA
	GERMANIUM TICKLER DETECTOR Larger View	P/N 30-010 £ POA

	GALENA CRYSTAL Small Crystal approx 1/2 inch x 1/4 inch or 12.5mm x 6mm. Larger view. Please enquire for prices and availability.	P/N 10-014 £x.xx Ea.
	FOOLS GOLD (Iron Pyrite) Approx 1/2inch x1/2 inch or 12.5mm x 12.5mm Larger view. Please enquire for prices and availability.	P/N 10-015 £x.xx Ea.
	IRON PYRITE CUBE Near Perfect Cube. 1/2 x 1/2 x 1/2 or 12.5 sq Larger view. Please enquire for prices and availability.	P/N 10-016 £x.xx Ea.
	PEACOCK ORE Approx 3/4 x 3/4 or 20 x20 mm Larger view. Please enquire for prices and availability.	P/N 10-017 £x.xx Ea.
	RED ZINCITE Approx 20mm Long Larger view. Please enquire for prices and availability.	P/N 10-018 £x.xx Ea.
	SILICON METAL Pure Silicon metal element. Size is approx 1/4x1/4x5/16 inches.6mm x 6mm x 8mm. Larger view.	P/N 10-019 £x.xx Ea.
	GERMANIUM METAL Pure germanium metal crystal.size approx 1/4 x 1/4 x 5/16 or 6mm x 6mm x 8mm. Other sizes available on request Larger view. Please enquire for prices and availability.	P/N 10-020 £x.xx Ea.