General > General Technical Chat
Historical 'Look' of old Radio Components!
GlennSprigg:
--- Quote from: rsjsouza on June 16, 2020, 01:18:10 am ---You are very lucky if you can get it. This radio had a great sound (large speaker).
You want to be sure the capacitor and the switch are in good condition - common things on radios of that era. Also, if I recall correctly from my dad's first restoration in the 1980s, the dial string is a dog to get it right. Let me know if you need some photographs from the insides (it will take a bit a I need to get it, unpack, open and nothing will "jump" at me) :)
--- End quote ---
Thank YOU for your offer too, mate!! Yes, even before I've purchased it, I have all the tech
info, including the dial-stringing!! Will get back to you when/if I get it & need help! :D
P.S. ...
I will generally replace all old caps, and were possible make them 'look' old hahaha!...
It amazes me when 'restorers' (although generally important!), make the VERY last
thing they do to check the Valves/Tubes?... It's a pedantic point that gripes me!.
YES!... those old caps need replacing, and some resistors go way high etc., but to me
the initial stumbling block is the tubes. So often, their unchanging oxide coated pins
are the initial 'problem'. How can one do 'voltage' measurements when the cct is non
functioning due to the Tube base connections!! YES!.. change caps etc, but do NOT bother
with voltage measurements until all Tubes/Bases bedded in !! ;D
YEARS ago, I had a Tube tester. All gone!! I'm going to rebuild my own, for performing
the basics at least, on common tubes. Now if I lived in the U.S. then WooHoo!! 8)
GlennSprigg:
--- Quote from: GlennSprigg on June 17, 2020, 11:54:57 am ---
--- Quote from: rsjsouza on June 16, 2020, 01:18:10 am ---You are very lucky if you can get it. This radio had a great sound (large speaker).
You want to be sure the capacitor and the switch are in good condition - common things on radios of that era. Also, if I recall correctly from my dad's first restoration in the 1980s, the dial string is a dog to get it right. Let me know if you need some photographs from the insides (it will take a bit a I need to get it, unpack, open and nothing will "jump" at me) :)
--- End quote ---
Thank YOU for your offer too, mate!! Yes, even before I've purchased it, I have all the tech
info, including the dial-stringing!! Will get back to you when/if I get it & need help! :D
P.S. ...
I will generally replace all old caps, and were possible make them 'look' old hahaha!...
It amazes me when 'restorers' (although generally important!), make the VERY last
thing they do to check the Valves/Tubes?... It's a pedantic point that gripes me!.
YES!... those old caps need replacing, and some resistors go way high etc., but to me
the initial stumbling block is the tubes. So often, their unchanging oxide coated pins
are the initial 'problem'. How can one do 'voltage' measurements when the cct is non
functioning due to the Tube base connections!! YES!.. change caps etc, but do NOT bother
with voltage measurements until all Tubes/Bases bedded in !! ;D
YEARS ago, I had a Tube tester. All gone!! I'm going to rebuild my own, for performing
the basics at least, on common tubes. Now if I lived in the U.S. then WooHoo!! 8)
--- End quote ---
Dear 'rsjsouza' (and anyone else interested!!! ;D )
Well myself & the 'missus' drove nearly 200kms to Perth, to meet the guy who had the 'Aussie' version
of your Philips European BX462A, and did a cheap deal with the 'Aussie' one, '113A' shown here...
It IS in pieces, but every part is there in the box, and the protruding glass band/station piece is in pristine
condition! (Although for Aussie Stations!).
HOWEVER, while I was there, I was 'Sucked-in' to a few other purchases !!!...
(Damn... more stuff to repair/use)... :-+
SO we also loaded in the car an English Philips Radio, model B3G75U, in pristine condition!!!...
Here's a pic of the Bands...
There is NO mains transformer inside!! and It runs on 230/240/250v AC or DC!! It has 3 Bands of operation.
What they call on the dial 'VHF', which is basically 'FM' from about 88 to 100 Mhz. A typical 'Medium' wave
from about 200 to 550 Metres, (aprox 1700 to 530 Mhz), And a LONG Wave from about 1100 - 5000 Metres,
(about 153 to 279 Khtz). The weirdest thing about the 'mechanics' is this!!... (Re: this diagram)...
Regarding the ABOVE photo, as noted by a repairer...
Switch (A) moves a rod (B), swinging arm (C) that turns the gear (D) which rotates gear (E)
at 90 degrees and finally operates the waveband switch (F).
Let's not get into the 'Stringing' of the dials!!! (I have all the tech data now, haha...)
OK, this guy ALSO had a power-supply, that I wanted as a Battery Replacement for old radios, and although
I'll re-build it ENTIRELY inside & out, the majority of the physical construction is now done for me!!!...
It won't look like that when I'm finished!!!! ;D
DAMN it... when we were going out through the Garage... we found an ancient 'chassis' that may need a
new lease on life!! It was a throw-in with the deal, though yet we know NOTHING!!! Be it 'parts' or another
unit for restoration?? Right now, it is a 'Hotpoint', (seemingly 9 valve?), with 6 ShortWave Bands. At the
moment, (tonight) I know NOTHING about it!! It is very much on the Back Burner...
My ONLY further purchases in the near future, are replacement capacitors & resistors. P.S. This guy also has
boxes & boxes of many hundreds of Valves/Tubes... We will meet again!!!! Drool-drool 8)
rsjsouza:
Congratulations, Glenn! You are a very lucky person! Very nice items, including the 113A.
I love the V.H.F. band and the "Hotpoint" display, which shows nicely several radio stations.
rsjsouza:
By the way, I caved in and got an EBL21 replacement from Bulgaria. Supposedly NOS. The guy also had some cheap Nixie Russian tubes (the same model used by everyone that has been making clocks these days) and I put in the same package. I almost got an AZ4 (almost identical to the AZ1) but the cost would be excessive. Maybe another time.
GlennSprigg:
Good on you. It's contagious isn't it!! ;D
For anyone interested, I found out about the 'Hotpoint' Chassis...
It's a "Hotpoint Bandmaster 19SGZ" which is exactly the same as...
the "AWA Radiola model 805GZ". (Another crossover of Companies).
It has 10 Tubes, (including a 'Magic-Eye' if wanted)...
6U7G 6J8G 6G8G 6AU6 Y61-or-Y63 6AU6 6J5GT 6V6GT 6V6GT 5Y3GT
It WAS part of a Cabinet, including a record player, but I'm not worried about that part!!
I'm going to make a nice polished timber escutcheon for the front, and a perspex backing box, that will
show off a highly polished metal chassis & top components!! way beyond the original 'look'. (And obviously
rebuilding it electronically). The old 'Phono' input will be put to NEW use!!! 8) 8) (Down the track).
P.S. I just thought I would explain better about my 'use' of the Power-Supply unit, shown above...
Firstly, as a replacement for 'Batteries' for some VERY old Valve Radios. (Back to the 1920's).
Typically about 1.5v for Tube heaters, and -45v 0 +45v for Anode voltages etc. (And higher!!).
But ALSO for Testing numerous Tubes/Circuits, where the 'Heater' varies from 1.2v to 12v, and many
DC high voltage outputs from/through 35v, 45v, 78v, 90v, 135v, 200v & higher, for some Tubes. Including
various voltages for screen/grid bias etc. I 'initially' wanted a Centre-Tapped transformer, just to use a
Dual-Diode Tube as a rectifier (for part of the circuit), with the Tube protruding, for an authentic look!! ;D
Most of the 'Voltage' variances will be via strings of Zener Diodes, although the Heater voltages will be
using a more modern Voltage-Regulated output from say 1.2 to 12v. I'll even probably include an output,
for the generally rare 'C' Battery!!, needed in REAL old sets that I have!! :)
My PRIORITY though, is this Power-Supply first.
Then finishing touches & testing of my 'Crosley model-51' 1920's Radio/Amp.
Then repairs/testing of my Battery powered 'Breville' Tube radio.
Then repairs/testing of my Battery powered 'Tecnico Aristocrat' (ugliest radio! post.. ;D).
Then all these 'latest' acquisitions!!
I'm as happy as a 'pig-in-shit' now... hahaha... :-+
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