My Lady Margaret CN429

Vidor Ltd.; Erith (Kent)

Data
Forum
Pictures
Collections

  • Year
  • 1954
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 74822

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • Superheterodyne (common); ZF/IF 470 kHz; 2 AF stage(s)
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Dry Batteries / 1.5 & 90 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4 inch = 10.2 cm
  • Material
  • Leather / canvas / plastic - over other material
  • from Radiomuseum.org
  • Model: My Lady Margaret CN429 - Vidor Ltd.; Erith Kent
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Dimensions (WHD)
  • 8 x 4 x 8 inch / 203 x 102 x 203 mm
  • Notes
  • Attaché case radio. Various colours. Advertised as both "Lady Margaret" & "My Lady Margaret". Receiver switches on when lid is raised.
  • Circuit diagram reference
  • Radio and TV Servicing books (R&TVS) book
  • Mentioned in
  • Attaché Radios, by Mark Johnson
  • Literature/Schematics (1)
  • Trader Sheet 1153

 Collections | Museums | Literature

Collections

The model My Lady Margaret is part of the collections of the following members.

 Forum

Forum contributions about this model: Vidor Ltd.; Erith: My Lady Margaret CN429

Threads: 1 | Posts: 2

Questions about Lady Margaret

Schematics/Service/Circuit Diagrams
Trader has CN429
R&TVS has CN429 and CN434

Neither has any mention of "Deluxe" or "Z" versions. For simplicity I don't refer to "My Lady Margaret" but just Lady Margaret (Vidor used both forms).

I have two "official" Vidor service sheets. The CN396 is a reprint of ERT.  The CN430 appears to be a "real" Vidor work. I've not got others but seen some on eBay (but £3 each + £5 postage is too much!)

There are suggestions

  1. That there is a CN429Z (differences unknown) (Adrian's portable Tubes1)
  2. That there is a de luxe version of CN429 (Adrian's portable Tubes1).
  3. Here that there are "early" (gone from here as it was a duplicate) and "late" versions of CN434 Lady Margaret Deluxe


Lady Margaret CN429

(from June 1954 according to Trader)

Vidor Lady Margaret CN429This example (mine) has no "Lady Margaret" on the badge.


It's evident that there are variations of labels inside lid of the CN429. Some have the round V sticker top left others have Vidor, "Vidor & Lady Margaret" or Lady Margaret in the middle. Vidor sometimes called it "My Lady Margaret".
Adrian claims the CN429Z has clear knobs, but mine has clear knobs and no indication of a "Z".
It's one of the smallest Vidor cases but the CN435 Lady Catherine only differs in panel style and is same case & chassis. The CN435Z Lady Catherine uses a PCB.

Note that Service Information doesn't "Name" either CN429, CN434 or CN435. Vidor in other literature and on labels affixed to inside of lid is inconsistent in naming.

Lady Margaret Deluxe CN434

(Probably 1957, maybe late 1956? Not in Trader)
It seems to me that the "Deluxe" consists of purely cosmetic changes on the panel.

(Edited from Seller sandway7 ebay 261383726324)


Differences CN434  from CN429

  1. The grill / panel has an extra ridge around the speaker grill with V at top and recess for knobs.
  2. There is an extra Vidor badge above the wavechange which only has L & M not the Vidor of CN429
  3. The case is curved rather than flat at the sides.
  4. The DK96 pin 5 shares DF96 screen grid resistor and decoupler (separate on CN429) and C14 4.7pF on DF96 anode omitted. Otherwise the chassis look identical with minor component value changes (i.e. C1 reduced to 130pF instead of 150pF, the CN429 uses lower value resistors on DAF96 than the CN434).


Questions:

  1. Is there really a CN429 Deluxe (i.e. appearance as CN434)?
  2. Is there really a CN429Z, if so what is the change?
  3. Are all CN434 the "Deluxe" style?
  4. Are all CN434 called "Deluxe" on the badge?
  5. Are there "early" (gone from here as it was a duplicate) and "late" versions of CN434 Deluxe, or is in fact the "Early" version a CN429 based "Deluxe" (i.e. CN429 case & chassis but CN434 panel)?

Searches of current and past ebay listings and Internet (over a period of time) don't show me more than two versions (CN429 not Delux and Deluxe CN434) other than here and Adrian's portabletubes site. If anyone finds an authentic "Deluxe" with CN429 Chassis and label that will be created.

1See www portabletubes co uk/portables/v429VAR htm (replace spaces with dots)

Michael Watterson, 03.Feb.14

Weitere Posts (2) zu diesem Thema.