ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Trumpy 5
Recent Posts
What do you do?
by gfretwell. 09/18/17 08:17 PM
Supporting conduit bodies
by ghost307. 09/18/17 12:12 PM
Thermal Imaging Camera upgrade
by Potseal. 09/18/17 11:57 AM
Linear Power Supply Quits Under Load
by JoeTestingEngr. 09/15/17 11:37 PM
Recreational Trailer Power Supply
by David1. 09/14/17 01:55 PM
New in the Gallery:
Gallery Test
Popular Topics(Views)
240,815 Are you busy
176,577 Re: Forum
168,504 Need opinion
Who's Online Now
0 registered members (), 61 guests, and 11 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
Page 1 of 2 1 2
#140788 - 05/04/04 09:31 AM And yet another record player thread...  
Texas_Ranger  Offline
Member
Joined: Dec 2001
Posts: 2,402
Vienna, Austria
In the Quelle Simonetta thread Classicsat was talking about record players with an idler wheel that touches the record. That reminded me of the weirdest record player I've ever seen. My Sharp Mini Stereophono.

It starts innocent enough, looking like an ordinary portable radio.

[Linked Image]

Then you flip over the handle and turn out a foot.

[Linked Image]

And now... Suprise! As you open what appears to be the back cover you discover it's the world's smallest record player that takes LPs!
You can see the 2 black idler wheels for 33 and 45 rpm.

[Linked Image]

And that's what it looks like with a record.

[Linked Image]

For playing you have to close the lid though, because there's another wheel in the cover that presses the record down on the idler wheel. The small brick is the power supply. Weird, eh?

[Linked Image]


Test Equipment:
Large Selection of Test Equipment For Electrical, HVAC, Test & Measurement
Large Selection of Test Equipment For Electrical, HVAC, Test & Measurement

#140789 - 05/04/04 09:41 AM Re: And yet another record player thread...  
Texas_Ranger  Offline
Member
Joined: Dec 2001
Posts: 2,402
Vienna, Austria
The weirdest thing about that beast: The radio part goes down to 86,5Mhz FM! All other radios I've seen start at 87.5. However, police radio doesn't seem to be on that frequency any more... I can't get anything below Radio Stephansdom (St. Stephens Cathedral radio, a catholic station that mostly plays classical music, and @something like 88 Mhz the lowest regular station on the scale).


#140790 - 05/04/04 10:47 AM Re: And yet another record player thread...  
pauluk  Offline
Member
Joined: Aug 2001
Posts: 7,520
Norfolk, England
Now that is unusual.

The weirdest player I ever saw was a novelty item some years back in the shape of a model car which just rode around the record which you placed on a flat surface. Hardly hi-fi, and I hate to think what it did to any record unlucky enough to be played that way! [Linked Image]

Re the FM band, British police used to use the section just above 100MHz, as our original broadcast allocation wasn't extended right up to 108MHz until the 1980s.

The section just below 88MHz is low-band PMR (Private Mobile Radio), commonly used by breakdown and utility vehicles, etc.

In the U.S., the sound carrier for TV channel 6 is immediately below the FM broadcast band, and can be received on some sets.


#140791 - 05/04/04 02:53 PM Re: And yet another record player thread...  
Texas_Ranger  Offline
Member
Joined: Dec 2001
Posts: 2,402
Vienna, Austria
My dad says in the 50ies and maybe later police radio used to be on 86 Mhz. Don't know about today.

I just tried to use the Sharp today, and it doesn't work too good. The output is close to nothing, even with the volume all the way up, both the radio and the phono section.

The model car record player sounds really weird. I guess they didn't sell too many of those...


#140792 - 05/04/04 04:38 PM Re: And yet another record player thread...  
SvenNYC  Offline
Member
Joined: Aug 2002
Posts: 1,691
New York City
The electrolytic capacitors in these old transistor radios dry out with age.

Replace them (observe polarity) and it should solve the problem. Clean the switches and volume control with a good quality contact cleaner like Caig De-Oxit.

I assume Austria (or nearby Germany) must have at least one radio/electronics parts supply houses that operate via mail-order or with counter service?

[This message has been edited by SvenNYC (edited 05-04-2004).]


#140793 - 05/05/04 02:39 AM Re: And yet another record player thread...  
Texas_Ranger  Offline
Member
Joined: Dec 2001
Posts: 2,402
Vienna, Austria
Nearby Germany... it's a 3-hour car trip to get there. Yeah, of course we got Conrad Electronics, a large chain, and lots of small electronics parts stores as well.
I was thinking about the caps too. Looks like it's time to learn soldering on a few scrap boards... and get a good soldering iron (one that can be used for electronics work - not my 1930ies 85W one with a heavy wood handle [Linked Image]) Or find someone who does the job for me. Getting new caps shouldn't be any problem.


#140794 - 05/05/04 11:16 AM Re: And yet another record player thread...  
SvenNYC  Offline
Member
Joined: Aug 2002
Posts: 1,691
New York City
Three hours to the border? That's pretty close (then again it's like six or seven hours to the Canadian border from New York City)

Nothing fancy really needed if all you're doing is occasional work.

I use one of these 30-watt pencils.

[Linked Image]

It's enough for most PC board work. For soldering to metal chassis or heavy contacts, you might want a 100 watt or more soldering gun.



[This message has been edited by SvenNYC (edited 05-05-2004).]


#140795 - 05/07/04 04:01 PM Re: And yet another record player thread...  
classicsat  Offline
Member
Joined: Nov 2002
Posts: 456
86.5 isn't that wierd, that is where the Japanes FM band starts. I believe it goes to 104 Mhz or so, if not to 108.


#140796 - 05/08/04 06:14 AM Re: And yet another record player thread...  
Texas_Ranger  Offline
Member
Joined: Dec 2001
Posts: 2,402
Vienna, Austria
The labeling ends at 108 "M C" as they put it, but you can turn almost to 112. AM range goes from 54 to 160 kHz.

I wonder if it is a direct import from Japan. OTOH the power supply seems to be original and it'S 220V only, output 3/4,5/6/9V DC.


#140797 - 05/08/04 02:23 PM Re: And yet another record player thread...  
SvenNYC  Offline
Member
Joined: Aug 2002
Posts: 1,691
New York City
The Japanese FM radio band stretches from 76 to 92. The rest is used for TV audio for channels 1, 2 and 3.

Below the Japanese FM band is the Eastern European FM band....which goes down to like 66-something Megahertz.

Here is a Japanese FM radio from WA2ISE:
[Linked Image]

Here is a Eastern European FM radio from WA2ISE also:

[Linked Image]

In most NTSC countries (with the exception of Japan), the range below 88 FM is used for TV channels 2, 3, 4 and 5. So on the Japanese radio you will find TV channel 5 and TV channel 2 or 3 audio on the E.E. set.


Page 1 of 2 1 2

Member Spotlight
sparky66wv
sparky66wv
West Virginia
Posts: 2,236
Joined: November 2000
Show All Member Profiles 
Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.031s Queries: 15 (0.015s) Memory: 0.8186 MB (Peak: 0.9925 MB) Zlib enabled. Server Time: 2017-09-19 22:30:05 UTC