| Ferron Crystal Detector |
1908–12 |
Radio part |
|
9 |
 |
|
|
|
| Adjustable Spark Gap |
1909 |
Amateur-D |
|
8 |
 |
|
|
|
| Transmitting Set Type A.C.C. [1/4 K.W.] |
1909 |
Amateur-T |
|
1 |
 |
|
|
|
| Wireless Receiving Transformer Loose Coupler |
1909 |
mod-pre26 |
|
14 |
 |
|
|
$ |
| Oscillation Coil Double Slide |
1909 ? |
Amateur-D |
|
5 |
 |
|
|
|
| Crystal Receiving Set |
1909–14 |
Crystal |
|
1 |
 |
|
|
|
| Ceco Tuning Coil |
1910 |
Radio part |
|
2 |
 |
|
|
|
| Crystal Receiving Set No. 6040 |
1910 |
Crystal |
|
1 |
 |
|
|
|
| Receiving Set No. 14 |
1910 |
Crystal |
|
1 |
 |
|
|
|
| Receiving Set No. 16 |
1910 |
Crystal |
|
1 |
 |
|
|
|
| Wireless Telegraph Apparatus Catalog G |
1910 |
Paper |
|
25 |
 |
|
|
|
| Blitzen Transformer Type E |
1910–20 |
Amateur-D |
|
8 |
 |
|
|
$ |
| Blitzen Duplex Loading Coil |
1912 |
Radio part |
|
3 |
 |
|
|
|
| Blitzen Transformer 1/4 KW |
1912 |
Radio part |
|
3 |
 |
|
|
$ |
| Crystal Receiving Set Duck No. 60X43 |
1912 |
Crystal |
|
2 |
 |
|
|
|
| Improved Ceco Tuning Coil |
1912 |
mod-pre26 |
|
12 |
 |
|
|
$ |
| Improved Ferron Detector |
1912 |
Radio part |
|
10 |
 |
|
1F |
$ |
| Portable Transmitting & Receiving Set Duck No. 97X42 |
1912 |
Amat TRX |
|
1 |
 |
|
|
|
| Wireless Telegraph Apparatus Catalog M |
1912 |
Paper |
|
23 |
 |
|
|
|
| Early Loose Coupler |
1912 ? |
mod-pre26 |
|
2 |
 |
|
|
$ |
| Blitzen Glass Plate Condenser |
1912 ?? |
Amateur-D |
|
7 |
 |
|
|
$ |
| Blitzen Crystal Receiver |
1912–15 |
Crystal |
|
24 |
 |
|
|
$ |
| Blitzen Receiving Set |
1912–15 |
mod-pre26 |
|
16 |
 |
|
|
|
| Blitzen Rotary Variable Condenser [1912 version] |
1912–15 |
Radio part |
|
3 |
 |
|
|
|
| Blitzen Tuner |
1912–15 |
mod-pre26 |
|
10 |
 |
|
|
$ |
| Blitzen Helix 1/4 KW |
1912–17 |
mod-pre26 |
|
4 |
 |
|
|
$ |
| Loose Coupler Crystal Receiver Dual Perikon |
1913 |
Crystal |
|
19 |
 |
|
|
$ |
| Commercial Receiving Set Type D |
1913–15 |
mod-pre26 |
|
11 |
 |
|
|
|
| Antenna Switch Dove Marble base |
1914–16 |
Radio part |
|
11 |
 |
|
|
|
| 1/2 K. W. High Potential Condenser Cat. No. W655 |
1914–16 |
Amateur-D |
|
8 |
 |
|
|
|
| Boston Wireless Key Italian Dove Marble base |
1914–17 |
Morse+TTY |
|
10 |
 |
|
|
$ |
| Blitzen Transformer 1/2 K.W. |
1914–20 |
Radio part |
|
4 |
 |
|
|
|
| Blitzen Type Transformer L [1/4 K.W.] |
1914–20 |
Radio part |
|
8 |
 |
|
|
$ |
| D tuner |
1914–22 |
mod-pre26 |
|
7 |
 |
|
|
|
| Catalog M Circa 1915 |
1915 ? |
Paper |
|
23 |
 |
|
|
|
| Hytone Quenched Spark Gap |
1915 ? |
mod-pre26 |
|
|
|
|
|
|
| Radio Telegraph Apparatus Catalog S |
1915/16 |
Paper |
|
49 |
 |
|
|
|
| Blitzen Tuning Coil Single Slide |
1916 |
mod-pre26 |
|
5 |
 |
|
|
|
| Catalog X 1916 |
1916 |
Paper |
|
40 |
 |
|
|
|
| Radion Receiving Set |
1916 |
Crystal |
|
1 |
 |
|
|
|
| Receiving Set Type ASA |
1916 |
mod-pre26 |
|
1 |
 |
|
|
|
| Receiving Set Type AF |
1916 ? |
Radio |
1 |
1 |
 |
|
|
|
| Spark Gap No. W656 |
1916 ? |
Amateur-D |
|
14 |
 |
|
|
$ |
| Receiving Set Type S |
1916–18 |
mod-pre26 |
|
3 |
 |
|
|
|
| Blitzen Amplifying Coil |
1917 |
Radio part |
|
|
|
|
|
|
| Blitzen Amplifying Telephones |
1917 |
Speaker-P |
|
|
|
|
|
|
| Blitzen Capacity Condenser |
1917 |
Radio part |
|
|
|
|
|
|
| Blitzen Complete Transmitting Set |
1917 |
mod-pre26 |
|
|
|
|
|
|
| Blitzen Detector Stand |
1917 |
Radio part |
|
1 |
 |
|
|
|
| Blitzen Electrolytic Interrupter |
1917 |
mod-pre26 |
|
2 |
 |
|
|
|
| Blitzen Oscillation Transformer |
1917 |
mod-pre26 |
|
|
|
|
|
|
| Blitzen Rotary Variable Condenser |
1917 |
mod-pre26 |
|
4 |
 |
|
|
|
| Blitzen Spark Gap Cat. No. W656 |
1917 |
mod-pre26 |
|
|
|
|
|
|
| Blitzen Switch Cat. No. W782 10-point |
1917 |
Radio part |
|
|
|
|
|
|
| Blitzen Tesla Coil |
1917 |
mod-pre26 |
|
|
|
|
|
|
| Blitzen Tesla High Frequency Coil |
1917 |
mod-pre26 |
|
|
|
|
|
|
| Blitzen Tuning Coil |
1917 |
mod-pre26 |
|
|
|
|
|
|
| Blitzen Wave Meter |
1917 |
Radio part |
|
2 |
 |
|
|
|
| Cambridge Semi-Quenched Rotating Spark Discharger Y741 |
1917 |
mod-pre26 |
|
1 |
 |
|
|
|
| Cambridge Tuner for Long Wave length Stations |
1917 |
mod-pre26 |
|
7 |
 |
|
|
$ |
| Cambridge Variable Condenser |
1917 |
mod-pre26 |
|
6 |
 |
|
|
$ |
| High Frequency Buzzer |
1917 |
Radio part |
|
|
|
|
|
|
| Loose Coupler Tuner Type X Receiving Transformer |
1917 |
mod-pre26 |
|
11 |
 |
|
|
$ |
| Quenched Spark Transmitter |
1917 |
mod-pre26 |
|
|
|
|
|
|
| Radion Receiving Transformer Loose Coupler |
1917 |
mod-pre26 |
|
13 |
 |
|
|
$ |
| Turney Crystaloi Detector Type AA with Buzzer coupling |
1917 |
Radio part |
|
2 |
 |
|
|
|
| Turney Crystaloi Detector Type BB with Buzzer built in |
1917 |
mod-pre26 |
|
|
|
|
|
|
| Turney Crystaloi Detector Type O |
1917 |
Radio part |
|
|
|
|
|
|
| Type D Receiving Transformer De Luxe |
1917 |
mod-pre26 |
|
|
|
|
|
|
| Blitzen Helices Oscillation Transformers |
1917 ? |
Radio part |
|
3 |
 |
|
|
|
| Blitzen Radiocoupler |
1917 ? |
Radio part |
|
2 |
 |
|
|
|
| Radion Receiving Transformer |
1917 ? |
mod-pre26 |
|
2 |
 |
|
|
|
| Receiving Transformer De Luxe Type "D" |
1917 ? |
mod-pre26 |
|
8 |
 |
|
|
|
| Universal Type Ferron Detector Stand Alone Crystal Detector |
1917 ? |
Radio part |
|
11 |
 |
|
|
$ |
| 1/2 K.W. "Hytone" Transmitter |
1917 ? |
Amateur-T |
|
2 |
 |
|
|
|
| 1 K.W. "Hytone" Transmitter |
1917 ? |
Amateur-T |
|
2 |
 |
|
|
|
| Balanced Variable Condenser Type 800 |
1919 |
Radio part |
|
2 |
 |
|
|
|
| Two Stage Audio Amplifier YI (O.Z. 27393) |
1919 |
Ampl/Mixer |
2 - VT-Class-II |
3 |
 |
|
|
|
| Variometer Type S.S. |
1919 |
Radio part |
|
2 |
 |
|
|
|
| Adjustable Spark Gap Y656 |
1919 ? |
Amateur-D |
|
1 |
 |
|
|
|
| Laboratory Type Variable Air Condenser Y699 Y700 Y701 |
1919 ? |
Radio part |
|
1 |
 |
|
|
|
| Rotary Variable Condenser Y735 Y736 Y774 Y775 [glass case] |
1919 ? |
Radio part |
|
1 |
 |
|
|
|
| Antenna Switch Type Y 658 |
1919 ?? |
Radio part |
|
13 |
 |
|
|
|
| Spark Gap Type F-656 |
1919 ?? |
Amateur-D |
|
5 |
 |
|
|
$ |
| Type B. Q. Wavemeter Z7042 |
1919 ?? |
Equipment |
|
1 |
 |
|
|
|
| Shortwave Tuner (Blitzen) H |
1919/20 |
mod-pre26 |
|
|
|
|
|
|
| Boston Wireless Key Engraved Bakelite Base |
1919–21 |
Morse+TTY |
|
3 |
 |
|
|
|
| Radion Receiving Transformer [New Type] |
1920 |
mod-pre26 |
|
7 |
 |
|
|
$ |
| Regenerative Receiver (Tuner) ZRF |
1920 |
mod-pre26 |
|
13 |
 |
1S |
|
$ |
| Regenerative Receiving Set Type F.A.R. (FAR) |
1920 |
Radio |
1 - VT-1 |
2 |
 |
|
|
|
| Variometer Type Z. R. V. |
1920 |
Radio part |
|
5 |
 |
|
|
|
| Bulletin Z |
1920 ? |
Paper |
|
8 |
 |
|
|
|
| Improved Transformer Type L |
1920 ?? |
Amateur-D |
|
5 |
 |
|
|
|
| One Stage Amplifier Panel Z.R.A. |
1920–22 |
Ampl/Mixer |
1 - UV201 |
2 |
 |
|
|
|
| Type Z.R.D. [Tube Control or Detector Panel] |
1920–22 |
mod-past25 |
1 - UV200 |
5 |
 |
|
|
|
| Radak Electro Ampliphone |
1921 |
Speaker-P |
|
1 |
 |
|
|
$ |
| Type Z.R. Double Regenerative Receiving Set 175-600 Meters (ZR) |
1921 |
Radio |
3 - UV200 |
2 |
 |
2S |
|
$ |
| ZRFD |
1921 |
Radio |
1 |
2 |
 |
|
|
|
| ZRFDA |
1921 |
Radio |
3 |
2 |
 |
|
|
|
| Universal Crystal Detector Type Y 675 |
1921 ? |
Radio part |
|
4 |
 |
|
|
$ |