Model: Spule veränderbar, (Variometer, Schiebespule)
Kugelvariometer, 130-450µH, ca.1925; eingebaut in Ultradyne 
Variometer als Sreckspule, evtl.Selbstbau? 
More pictures
| Ctry | Manufacturer | Year | Name | Notes | |
| B | Rexola | 34 - | Rexola 356 | ||
| B | SBR | 39 - | 339A (339 A) | ||
| CH | Paillard | 48 - 52 | Telefonrundspruchgerät TD1001 (TD 1001) | ||
| CS | Telegrafia | 33 - 34 | Super 34 ~ | Reflex-Super | |
| D | Philips | 59 - | AG9133/95 (AG 9133/95) | Stereo-Kofferplattenspieler; Geschwindigkeiten: 16, 33, 45, 78 UpM. | |
| D | UndyWerke | 37 - 38 | 65 W | Schatulle. Phono-Chassis = 71. | |
| D | Philips | 63 - 64 | Electrophon SK91 (SK 91) | Phono-Chassis hnlich SC10. Stereo-Kristall-System. Tischgert mit pultfrmig angeordneten | |
| D | Telefunken | 38 - | Fernseh-Großanlage (Karolus) | Grobild-Zellentafel 400 400 cm, 100 Zeilen mit je 100 Glhlampen. Bildabtastung der 100 Bildpun | |
| D | Elektron | 60 - 62 | EMG9/2ce (EMG 9/2 ce) | Zweispur; Bandgeschwindigkeit: 9,5 cm/s; Spulen- 15 cm. | |
| D | Siemens | 54 - 55 | Eladyn-Vollverstärker 6S Ela5172 | ||
| D | Telefunken | 57 - 58 | Magnetophon KL65TS (KL 65 TS) | Zweispur; 4,75/9,5 cm/s; Spulen- 13 cm. Baugleich mit AEG KL65TS. | |
| D | Krechlock | 62 - | Flamingo (Musiktruhe) | Exportmodell mit "bewhrtem Marken-Mittelsuper", vertrieben von Heim-Electric Deutsche Export- u | |
| DK | Johnsen | 36 - | Always Cyklop 37u (37 u) | Automatische Fadingregulierung. | |
| F | Homebrew | 35 - | 3-tube Receiver 1930-1945 | HOMEBREW ORIGINAL: noncommercial product from times when it was state of the art. Guidelines at | |
| F | Radialva | 53 - 55 | Fox | DK92 ou 1AC6; DF91 ou 1T4; DAF91 ou 1S5; DL95 ou 3Q4 Colours: ivory or aubergine. Accessoires: | |
| F | Picard | 13 - 14 | détecteur à galène sous verre sur socle | dimensions du socle fournies ci-dessus -Fixation au pas T.M - diamtre du cylindre : 26mm, haute | |
| FIN | Asa | 54 - | 820 | 820 has output for external loudspeaker and input for a recordplayer. | |
| GB | Laskys | 50 - | ViewMaster | 9" or 12" round tube 405 lines TV kit for table or console cabinet, Model A, B, C, D, E known f | |
| GB | Cossor | 35 - | Super-Ferrodyne 368 | ||
| GB | Philips | 46 - | 170A/15 (170 A/15) | ||
| I | ItalMinerva | 52 - | SA286 (SA 286) | ||
| I | Phonola | 50 - | 5511 | Gamme d'onda: medie divise, 5 corte. Wave bands: 2 BC, 5 SW. |
|
| J | Aiwa | 65 - | AR142 (AR 142) | ||
| J | Sharp | 65 - 70 | FXC-39 (FXC39) | Only for 120Volt AC. 9 Transistoren: 2SC535 2SC461 2SC460 2SC460 2SC460 2SB75 2SB75 |
|
| PL | ELTRA | 73 - | Lucyna MOT725 (MOT 725) | ||
| S | Philips | 61 - | Conserton (Concerton) V822 (V 822) Puck | Tonabnehmer- und Lautsprecher-Anschluss; getrennter Antrieb fr UKW und LW/MW/KW. | |
| USA | Encore | 70 - | TFN-1003 (TFM1003) | ||
| USA | Admiral | 60 - | Y4132 (Y 4132) Ch= 5K5A (5 K 5 A) | Stereophonic Amplifier | |
| USA | RCA | 57 - | 1-BX-5 (1BX5) Ch= RC-1183A (RC1183A) | Selenium Rectifier. | |
| USA | Raytheon | 56 - | T-100-5 | Came in 5 different colors: T-100-1 = black/yellow, T-100-2 in ivory/yellow, T-100-3 in black/r | |
| USA | Zenith | 50 - | Mercury 6-MM-790E (Ch=6D90E) | Export version of 6MM790; In Riders Vol.18-13 the schematic is erroneously named 6-MN-790. Corr | |
| USA | Story | 31 - | 77 | ||
| USA | Stewart | 39 - | 910-1113 | ||
| USA | Stewart | 36 - | 1468 | ||
| USA | Sears | 32 - | Silvertone 1582 | Some of this sets have 224 translator and 57 detector, others have 57 translator and 224 detect | |
| USA | Lang | 35 - | 80UA | ||
| USA | Hallicrafters | 55 - 61 | SX-100 (SX100) | Coverage: 0.538-1.58, 1.72-4.9, 4.6-13, 12-34MHz, 2nd IF=50KHz, 50KHz L/C-Filter, Reception Gap | |
| USA | GrigsbyGrunow | 30 - | 103 | One dial (primary tuning control knob) | |
| USA | Goodrich | 41 - | R419B | ||
| USA | GambleSkogmo | 38 - | 3132 | ||
| USA | Fairbanks | 36 - | 73C3B (73 C 3 B) Ch= 73 | Sync.vibrator for+B. | |
| USA | Dumont | 32 - | 600 | ||
| USA | Amrad | 29 - | Minuet 81 | One dial (primary tuning control knob) | |
| USA | Emerson | 33 - | AT175 |
