ANTIQUE-RADIO-LAB

Antique Radio Forum for Collectors antique-radio-lab.forumotion.com
 
HomeHome  RegisterRegister  FAQFAQ  SearchSearch  Log inLog in  

Share | 
 

 Different types of Crystals for radios

View previous topic View next topic Go down 
AuthorMessage
FrankB
Moderator
Moderator
avatar

Join date : 2010-11-22

PostSubject: Different types of Crystals for radios   2016-11-13, 6:05 pm

I have tried numerous different xtals for use in xtal radios.
The old Galena detectors embedded in either lead, solder or Whites Metal, 1N34, 1N34A, (Some sources indicate that the newer 1N34's are not as good as the older ones), 1N21,1N60, 1N60A, (Used as video det. in some 1950's B&W TV sets) 1N270, (From an old UHF tuner), old germanium xistors that had defects - E- B  or B-C junctions used, Carborundum- (with battery), Copper ore, Galena ore, Iron Pyrite, and a few other types of metallic crystals.
  Tested on the BCB only, so far.
So far, I found the best to be the galena detectors, followed by the 1N34 & 1N60 types.

Have any of you experimented with different types of detector materials? I would like to know of your experiences.

 I do know that they used Mercury detectors using a Platinum wire in a Mercury pool; but have not tried that yet. (Yes, I know the hazards of Mercury fumes. I do some prospecting also as a hobby).
 I want to try casting a Galena crystal into a copper plumbing cap with either lead or solder to hold it in place at some point also.


Last edited by FrankB on 2016-11-27, 5:53 pm; edited 1 time in total
Back to top Go down
Cliff Jones
Site Administrator
Site Administrator
avatar

Join date : 2010-11-22

PostSubject: Re: Different types of Crystals for radios   2016-11-22, 11:52 pm

I think there's a microchip that's a mosfet that Has a lower threshold of 0 volts.

[You must be registered and logged in to see this link.]

_________________
I'm a Science Thinker, Radio Tinkerer, and all around good guy. Just ask Me!
Back to top Go down
 
Different types of Crystals for radios
View previous topic View next topic Back to top 
Page 1 of 1
 Similar topics
-
» discussion on hand types via the elements
» Crystals set in gold or silver?
» When crystals don't appeal
» Giving crystals as gifts?
» What Crystals are You Currently Carrying or Wearing?

Permissions in this forum:You cannot reply to topics in this forum
ANTIQUE-RADIO-LAB :: Radio Repair Bench :: Crystal Radios-
Jump to: