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 Raid in Wollongong
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 Return to top of page · Post #: 1 · Written at 2:52:18 PM on 13 August 2017.
Robbbert's avatar
 Location: Sydney, NSW
 Member since 18 September 2015
 Member #: 1801
 Postcount: 685

Just came back from a quick radio raid in Wollongong.

First shop had lots of radios at decent prices, so I came away with yet another 11-7, a Blaupunkt AM/FM valve radio, and a National tape recorder with tapes.

The lady said the 11-7 makes no sound which means she's plugged it in (oh no!).
The Blaupunkt has had the power cord cut off, and I can see the internal speaker has been disconnected. It has a tuning indicator valve.
The National looks intact, and being Japanese, might even still work! We will see. It has a tuning indicator valve doing the job of a recording-level meter.

Then I visited another shop which stank because of all the dogs laying about in the place. They had a few radios but the prices were beyond my budget. They have 2 ancient box-shaped brown radios with headphones, 3 large tuning knobs and some switches. One was $600, the other (which also includes battery boxes and large diamond-shaped frame antenna) had no price tag attached. Obviously 1920s TRF type. Couldn't see inside, but maybe they might have '01A or similar. Didn't buy anything.

I'll report back on what success (if any) I have with these 3 pieces of equipment.


 
 Return to top of page · Post #: 2 · Written at 3:58:24 PM on 13 August 2017.
Vintage Pete's avatar
 Location: Cromer, NSW
 Member since 1 May 2016
 Member #: 1919
 Postcount: 567

I have a Typ 42 Blaupunkt stereogram, Its a 1962 mod with Fm. The Typ 42 looks different from the others here in oz.
I bought it years ago in Newcastle and at the time I though it was great, but these days I like my Kriesler 11 77 much more .
It still works fine ,Apart from the volume is a bit down on one channel and its not as loud as it use to be.
I think its 4 speakers by memory. Its a very nice looking unit and FM in 1962.
I note though , I dont get the full coverage of the Fm stations on the dial span

Pete


 
 Return to top of page · Post #: 3 · Written at 7:33:34 PM on 13 August 2017.
JamieLee's avatar
 Location: Clare, SA
 Member since 27 March 2016
 Member #: 1894
 Postcount: 384

Yes I have a Blaupunkt New York 4540 from 1958, it needs recapping and some resistors, it was working well but slowly started playing up, first the turntable fell silent then the AM started taking ages to come on, so I used to leave it on all of the time, just turn it down when I wanted to listen to anything else. That was when I was living at my cottage in Cambrai-Sedan, where it still is, but mice got into it and although the FM still worked fine two years ago, it's under a tablecloth now, still at the cottage and I'm not game to turn it on as this was my first, I bought it for $140 back in 2009 and got 5 years good service out of it (this was before I knew about re-capping etc.) I replaced all of the valves thinking erroneously that was best for it... Started getting zaps from the antenna! But it'll be a great project, and yes the FM gets JJJ and ABC and a few others but MMM and SAFM I couldn't get as the range is just below where those Austereo stations are. Blaupunkt are a really great sounding bells and whistles radio!


 
 Return to top of page · Post #: 4 · Written at 7:14:24 PM on 14 August 2017.
Vintage Pete's avatar
 Location: Cromer, NSW
 Member since 1 May 2016
 Member #: 1919
 Postcount: 567

. Jamielee,
Yes they are a great sounding unit with plenty of volume.
You will meet neighbours you never knew you had !!!
I bought mine years ago off gumtree for $45.
It's a great unit , but it does not have the look I'm after in a radiogram. Mine is a dark walnut.
It's been very reliable. Once the tuner dial become very stiff to turn ,so I pulled the chassis out and gave it a blast with that CRC stuff and it was fine after that.
Funny how the Germans put their caps in with the numbers facing upwards! Wish all units did that. I have a German TV and its the same.
Pete


 
 Return to top of page · Post #: 5 · Written at 1:30:47 PM on 16 August 2017.
Robbbert's avatar
 Location: Sydney, NSW
 Member since 18 September 2015
 Member #: 1801
 Postcount: 685

First installment..

Checked out the tape recorder. It's a National RQ702, valves are 12AX7, 6BM8, 6DA5 (=EM81). No sound except a crackle at switch-on. Mechanical problems. I tried another 6BM8 but no difference. The thing is extremely difficult to work on, not only is everything packed around everything else (and the wax caps are at the bottom of it all), but there's a bunch of hard-wired cables going to the accessory panel. The mechanical problems included a loud knocking noise in playback, and the fast-forward and rewind was not steady (tapes formed an egg-shaped lump on the reel instead of circular, and in rewind the tape broke). Mechanical problems are usually the death-knell for tape recorders, as the specialised rubber replacements are impossible to obtain. So, scrapped it. It came with a manual and schematic which has been scanned and should appear on my website in a few weeks.

Next, the Kriesler 11-7. Valves are 6AN7, 6SK7GT, 6SQ7GT, 6M5, 6X5GT. Opened up, a thin layer of dust but otherwise immaculate. The only previous repair was a replacement first electro. The cloths around the speaker were intact and still attached. Measured the transformers and choke, all good. Cleaned the valves, and cleaned the silver pins of the 6AN7 and 6M5. Plugged them back in except for the rectifier, powered on, and the lack of sound reported by the lady was now obvious - the 6SK7 didn't light up. Used the one that came with the mouse-eaten 11-7 described elsewhere. Plugged in the 6X5 and we had some sound, but the HT was only 120 volts. The gunk that had leaked out of both the power transformer and the speaker transformer made the next step obvious. Replaced a bunch of capacitors, powered on again, HT now at 130 volts. Perhaps the overload had worn out the 6X5? Raided the mouse-eaten set for its 6X5, and hey presto, 250 volts. Made sure both bands worked, made a very slight adjustment of the aerial trimmers, tightened up the screws in the power plug, and we have a nice working set.

Lastly, the Blaubunkt. It's a model 2420, valves are ECC85, ECH81, EF89, EABC80, EL84, EM80. Very dusty and some rust. Dial cord for AM is broken. The ferrite aerial had fallen off its mount and unwound itself and become disconnected, since the rubberband-type retainer had perished ages ago. The EABC80 had been replaced by a 6T8A, which appears to be a close (but not exact) equivalent. It looks like there was some kind of internal FM antenna but it has been ripped out. The power cord has been cut off. There's a wire poking through the chassis next to the 6T8, going nowhere. The main problem is to get the ferrite connected to the correct place, can anyone help here?


 
 Return to top of page · Post #: 6 · Written at 6:32:44 PM on 16 August 2017.
Redxm's avatar
 Location: Tamworth, NSW
 Member since 6 April 2012
 Member #: 1126
 Postcount: 401

Good score


 
 Return to top of page · Post #: 7 · Written at 7:43:27 PM on 23 August 2017.
Robbbert's avatar
 Location: Sydney, NSW
 Member since 18 September 2015
 Member #: 1801
 Postcount: 685

The manual for the RQ702 tape recorder is now online.

The Blaupunkt is a 110 volt model, and since the dial light is blown, perhaps someone plugged it in already.


 
 Return to top of page · Post #: 8 · Written at 10:38:04 AM on 30 August 2017.
Robbbert's avatar
 Location: Sydney, NSW
 Member since 18 September 2015
 Member #: 1801
 Postcount: 685

Checked out the Blaupunkt, it is a write-off, and has been consigned to the bin. You win some, you lose some.


 
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