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AvoMinor (AVO Minor Meter) Mk.iv (4)

AvoMinor Mk.iv ; AVO Ltd.; London (ID = 1067701) Equipment
 
AvoMinor Mk.iv ; AVO Ltd.; London (ID = 1067703) Equipment
AvoMinor Mk.iv ; AVO Ltd.; London (ID = 2219279) Equipment AvoMinor Mk.iv ; AVO Ltd.; London (ID = 250224) Equipment
AvoMinor Mk.iv ; AVO Ltd.; London (ID = 250225) Equipment AvoMinor Mk.iv ; AVO Ltd.; London (ID = 250226) Equipment
AvoMinor Mk.iv ; AVO Ltd.; London (ID = 250227) Equipment AvoMinor Mk.iv ; AVO Ltd.; London (ID = 1392708) Equipment
AvoMinor Mk.iv ; AVO Ltd.; London (ID = 1491712) Equipment AvoMinor Mk.iv ; AVO Ltd.; London (ID = 2092375) Equipment
AvoMinor Mk.iv ; AVO Ltd.; London (ID = 2092376) Equipment AvoMinor Mk.iv ; AVO Ltd.; London (ID = 2092377) Equipment
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AvoMinor Mk.iv ; AVO Ltd.; London (ID = 2219279) Equipment
AVO Ltd.; London: AvoMinor Mk.iv [Equipment] ID = 2219279 1400x1050
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For model AvoMinor (AVO Minor Meter) Mk.iv (4), AVO Ltd.; London
 
Country:  Great Britain (UK)
Manufacturer / Brand:  AVO Ltd.; London
Year: 1964 ?? Category: Service- or Lab Equipment
Wave bands - without
Details
Power type and voltage Dry Batteries / 1.5 Volt
Loudspeaker - - No sound reproduction output.
Power out
from Radiomuseum.org Model: AvoMinor Mk.iv - AVO Ltd.; London
Material Special material, described in the notes.
Shape Tablemodel, with any shape - general.
Dimensions (WHD) 142 x 25 x 91 mm / 5.6 x 1 x 3.6 inch
Notes Measurement ranges:
DC: 100mV, 2.5, 10, 25, 100, 250, 1000 V;
AC: 10, 25, 100, 250, 1000 V;
I (DC): 0.1, 1, 10, 100, 1000 mA;
R ranges are 0-20 k and 0-2 Mohm;
Ohms/volt: 10k on DC ranges, 1k on AC ranges;
Basic meter movement: 60 µA.

The front panel is light-grey Bakelite, the rear of the case is metal in earlier examples and grey plastic in later production. It is also possible (but not certain) that the design of the meter movement may have been changed some time after 1966. There are two typographical errors in the AVO Working Instructions on the parts list:- - It is titled "Mulitminor" and - switch position 12 should read 100 V a.c. (not 100 V d.c.)
Net weight (2.2 lb = 1 kg) 0.2 kg / 0 lb 7 oz (0.441 lb)
Collectors' prices  
Source of data - - Data from my own collection

Model page created by Juhani Makivuoti † 21.09.13. See "Data change" for further contributors.



All listed radios etc. from AVO Ltd.; London
Here you find 65 models, 64 with images and 34 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



 


Forum contributions about this model
AVO Ltd.; London: AvoMinor Mk.iv
Threads: 1 | Posts: 4
Hits: 2797     Replies: 3
avo: MK4 (MK IV); Multiminor
John Sykes
07.Oct.11
  1

I have recently aquired an AVO Multiminor Mk4 which may be a later version than the one illustrated. It has a different movement (not distinguishable without opening the meter), and the rear cover is plastic, not metal.  It's also in excellent cosmetic condition. Should this information be uploaded as a seperate entry as a possible later variant, or added as supplementary to the exising entry?  The latter would require  some detailed explanation.  

 

John

 

 

 

Attachments

Michael Watterson
08.Oct.11
  2

There are a huge number of AVO variations.

Each regular Model + Mk combination of regular AVO meter has it's own model page. I think it's strange it should be different from a another Multiminor without change of Model and Mk as AVO not averse to creation of new Model + Mk for a small variation of dial label.

I have the Model 9 MkIV, which isn't listed here. The Model 8 MkIV is essentially the same, but other slightly different Model8 and Model9 of same Mk version have different pages.

Did you email the Model Moderator(s)?

Maybe the listed Model/MK of the different one already listed is wrong, or your meter movement was replaced (this is where the Model and MK on regular AVO is shown), or your rear cover was replaced (or both) and in reality the model/Mk you have is not actually the Multiminor you think it is.

 

 

 

John Sykes
08.Oct.11
  3

Michael:

I can e-mail you everything I know about my model, plus extracts from the 1966 AVO service manual for the Mk 4, and you can make up your own mind regarding this "variant".  It is of course possible that AVO have repaired this sample, fitting perhaps the movement from a Mk 5?, and for some reason deciding to replace the rear half of the case, but it seems a little unlikley they would tool up 'specially to service an obscolete model?  I can tell you that the new movement is mechanically "adapted"  or interfaced to the main meter chassis (which holds the scale etc) using a dedicated "matching-black" bakelite block.  Again, this may be a feature of the Mk 5 contruction, but I don't have service information for the later meter.

 

John

 

 

 

 

 

Michael Watterson
08.Oct.11
  4

AVO was renowned even for re-calibration & repair of even WWII models up to 70s or 80s, I guess until Thorn/Megger took them over.

I'm no expert on AVO stuff, but they did repair even very old models of AVOmeter.

 

 

 
AVO Ltd.; London: AvoMinor Mk.iv
End of forum contributions about this model

  
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