Directory of this web site

Sorted by subject areas and alphabet

Diese Seite in deutscher Sprache

Crystal receivers

AEG, manufacturer
Arlt, Radio Arlt, dealer of crystal receiver kits
Berliner, manufacturer
Crystal set kits
DeTeWe, manufacturer
Eswe, manufacturer
Frigo, manufacturer
Go Labs, manufacturer of crystal set kits
Hegra, manufacturer
Kosmos, manufacturer of crystal receiver kits
Kretzschmer, manufacturer
Luxor, manufacturer
Minilabs, manufacturer of crystal receiver kits
Miniman, manufacturer
Nora, manufacturer
Old-time Crystal sets
Omega, manufacturer of crystal receiver kits
Rim, Radio Rim, dealer of crystal receiver kits
Schieren, manufacturer
Seibt, manufacturer
Sensiblator, manufacturer
Schneider Opel, manufacturer
SM Elektronik, dealer of crystal receiver kits.
Telefunken, manufacturer
Unknown, manufacturer
Werco, manufacturer

Construction projects

Antenna tuner, Crystal receiver with antenna tuner.
Crystal detector for crystal receiver
Crystal receiver created by Werner Diefenbach
Crystal receivers with AF amplifiers (no battery necessary, self-powered)
Crystal receiver with bias voltage
Crystal receiver with LED
Crystal receivers with good audio quality
Crystal receiver with transistor AF amplifier and home brewed battery
Crystal receivers with silicon diodes
Einkreis/Zweikreis-Detektor mit Eisenkern-Spulen.
Frame antenna MW (BC) crystal receiver for dx reception
Frame antenna LW (LF) crystal receiver
FM crystal receiver with slope rectifier
Gollodyne. Triple tuned crystal receiver with ferrite pot core coils and matching capactior.
High end MW (BC) crystal receiver, construction project
Honey comb coil
Impedance adapter for modern stereo ear phones
Impedance transformer for modern ear phones
Long wave (low frequency, LW, LF) crystal receiver
Long wave double tuned crystal receiver
Medium wave (MW, BC) crystal receiver
Mystery Set, double tuned variante by Gollum
Old-time high selectivity crystal receiver
Push pull crystal receiver
Schematics
Shortwave (SW) crystal receivers
SW DX crystal set with spider web coil.
Simple crystal set, construction project (Using my set of parts)
Single / double tuned crystal receiver using ferrite core coils.
Slope rectifier
Spider web coil crystal receiver
Triple tuned crystal receiver with spider web coils and matching capactior.
.
Tube rectifier receiver
Two circuit crystal receiver
Yagi antenna

History

Crystal receiver history
List of some old-time German, Austrian and Swiss crystal set manufacturers

Hints, tips and little tricks

2000 Ohms headphones, replacement with crystal phones
acryl coil formers
Balun transformer
Crystal receiver DX reception.
Crystals for crystal receivers, hints
Crystal set analysis. Article by Berthold Bosch, DK6YY.
Cylinder coils with lower internal capacity
Cylinder basket coil for hig performace crystal receivers
Diode AM Conversion Efficiency in Crystal Sets and Some Implications. Article by Berthold Bosch, DK6YY.
Diodes
Dipole antenna
Do I need measuring instruments to build crystal receivers?
Ferrite pot core coils. (RM6 or P18*11)
Ground, wich ground is best?
Hints
Honey comb coils, some photos
How to adjust the coil for the required frequency range?
Litz wire, r.f. litz wire
Loop antenna
Low loss coils
Marginal reception at day-time?
Q factor. Determining the q factor of your resonant circuits
Rejector circuits (wave traps) for crystal receivers
Shottky-diodes, diode 5082-2835
Solid dielectric or air dielectric tuning
Spider web coils, some photos
Tuning range of your crystal receiver
Voltage doubler circuit
Wave traps for crystal receivers
What kind of antenna should I use?

Xtal-Store (Crystal receivers,adapters, replacement parts for sale)
These are commercial offers.

Business terms and impress.

2000 Ohms headphones, replacement with crystal phones
Air spaced variable capacitors
Crystal receivers for sale
Crystal ear phone for sale
Crystals for crystal receivers, replacement parts
Ferrite core coils
Germanium diodes for sale
Gollum´s Crystal Receiver # 1 for sale
Gollum´s Crystal Receiver # 2 for sale, "Gollum´s Crystal Case"
Gollum´s Crystal Receiver # 3 for sale, "The Black Gollum"
Gollum´s Crystal Receiver # 4 for sale, "Gollum´s Wave Spider"
High end MW (BC) crystal receiver, construction kit by Gollum
Impedance transformer for modern ear phones
Impedance adapter for modern stereo ear phones
MW (BC) coils for sale
Rejector circuits (wave traps) for sale
Replacement of old-time 2000 Ohms headphones
Replacement parts
Set of parts for modern crystal receiver
Simple crystal set for sale
Spider Web Coil, ready for use.
Tuning capacitors for sale
Wave traps for sale

Miscellaneous

Articles by my site visitors (Charles A. Lauter, Berthold Bosch, DK6YY, etc.)
About this site
Bosch, Berthold, DK6YY. Article: Crystal Set Analysis.
Bosch, Berthold, DK6YY. Article: Diode AM Conversion Efficiency in Crystal Sets and Some Implications.
Crystal receivers of my guests
E-mail address of webmaster "Gollum´s Crystal Receiver World"
Forum for friends of old-time and modern crystal receivers.
Guestbook
Guests, crystal receivers of my guests
Lauter, Charles A. Diode Article: Crystal set testing.
Links
Miscellaneous