|
- Manufacturer : receiver has been
realised with suggests by Mc Mahon and O. Losev
- Type : crystal radio receiver
- Device : crystal receiver using all early
authentic parts!
- Operating estimation (1-10) : does work!
- Global estimation (1-10) : 10
- Specials : needs long wire antenna ( 60
ft long ) and appropriate good ground
- good selectivity
- the left slider of coil used as a
matching impedance of closed type of detector
- the medium slider used as
resonant tuning slider together with fixed 160 pF mica cond.
- the right slider used as antenna
matching slider together with var. condenser 1000 pF
- very early brass telegraph
binding posts for outside connections
- has heavy brass name plate
- Note : this type
of crystal receiver was used before 1920's as
prebroadcasting
or spark telegraph
receiver assemblied with parts of resonable manufacturers as were
Charles Leutz
(owner?), Thordarson, Wm.J.Murdock . . . from the U.S.A.
- very hard to find some of
these early parts
DETAILS of PARTS
(click on a picture!)
 |
 |
 |
 |
 |
 |
|
tuning coil
1917 |
knife switch
1911 |
var. cond.
1914 |
fixed cond.
1916 |
detector
1920's |
AF transf.
1920's |
headphones
1914 |
|
