City-Boy 203
|
|
||||
|
alternative name
|
Grundig Portugal || Grundig USA / Lextronix | ||||
|---|---|---|---|---|---|
| Year: 1963–1965 | Category: Broadcast Receiver - or past WW2 Tuner | ||||
| Semiconductors (the count is only for transistors) | 9: AF121 AF125 AF126 AF126 AF126 AC126 AC125 AC128 AC128 OA90 OA90 1N60 E25C5 |
| Main principle | Superheterodyne (common); ZF/IF 460/10700 kHz |
|---|---|
| Tuned circuits | 7 AM circuit(s) 12 FM circuit(s) |
| Wave bands | Broadcast, Short Wave plus FM or UHF. |
| Details | |
| Power type and voltage | Dry Batteries / 2 × 4,5; 9 Volt |
| Loudspeaker | Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical |
| Power out | 1 W (unknown quality) |
| from Radiomuseum.org | Model: City-Boy 203 - Grundig Radio-Vertrieb, RVF, |
| Material | Plastics (no bakelite or catalin) |
| Shape | Portable set > 8 inch (also usable without mains) |
| Dimensions (WHD) | 260 x 160 x 70 mm / 10.2 x 6.3 x 2.8 inch |
| Notes | Netzbetrieb mit nachträglich einsetzbarem Netzteil TN9 (52,- DM) möglich. |
| Net weight (2.2 lb = 1 kg) | 1.8 kg / 3 lb 15.4 oz (3.965 lb) |
| Price in first year of sale | 249.00 DM |
| Source of data | Handbuch VDRG 1963/1964 / Radiokatalog Band 1, Ernst Erb |
| Mentioned in | Handbuch RFP 1963 |
| Literature/Schematics (1) | -- Original-techn. papers. (ETL-Liste, März 1963) |
| Picture reference | Das Modell ist im «Radiokatalog» (Erb) abgebildet. |
All listed radios etc. from Grundig (Radio-Vertrieb, RVF, Radiowerke)
Here you find 6070 models, 5290 with images and 4088 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
|
Hits: 1438 Replies: 3
grundig: Faulty Germanium transistor on City-Boy
|
|
|
Ganesh Ramanathan
26.Sep.16 |
1
My City-Boy had constant hissing sound which was traced to a faulty TF65 (AC125) transistor on the amplifier section. I temporarily replaced it with a bulky TF78 and it seems ok, but are there any online shops selling old transistors? I would be glad to know your ideas and suggestions. Thank you very much! |
|
Michael Watterson
26.Sep.16 |
2
Many Eastern European sellers on eBay have both domestic and military "NOS" Germanium transistors of Russain or USSR origin. Just select parts with suitable voltage, power and frequency rating for the application, rather than equvalent or better spec. I've used a 60MHz part to replace the usually faulty AF117. Audio parts other than higher power audio (such as AD161 AD162) are easier to replace than RF parts. Western European parts are also available, but can be extremely expensive. AC125 should be no problem. Parts like AF117 are usually better replaced with AF127 etc due to tin whiskers inside the can. Littlediode is I think one western source specialising in obsolete parts. They sell on their own site and ebay. |
|
Andrew Wylie
25.Nov.16 |
3
TF65 are for sale on eBay quite cheaply. Andrew |
|
Rudolf Drabek
25.Nov.16 |
4
Pls send email with address. I can send you two pieces. If you have a SI pnp transistor you can adapt R55 to e.g.18k for equal emitter current of the LF-driver stage. Rudi |
End of forum contributions about this model
