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 Post subject: Airline 1131 ‘Transistor 6’ project - Completed
PostPosted: May Sat 14, 2022 11:48 pm 
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Joined: Jan Thu 01, 1970 12:00 am
Posts: 1492
Location: Jackson, TN
Hi all,

Back again with this Airline 1131, apparently ca 1959 or so. I picked it up recently with another set in an eBay auction.

Its in a little rough shape…
>> Case cracked
>> Old scotch tape repairs with lots of fossilized glue.
>> A few wires pulled loose from the circuit board, I’ll need a little info to put all that back together.

Overall, looks restorable with a little effort. It really is kind of a cool looking set, the color is more burnt orange than red. Should be fun!

The circuit board looks pretty intact visually, except for broken wires. It looks like someone got in there and tried to do something with it, uh-oh. The cover is missing from the polyvaricon but it does turn, so my fingers are crossed that it hasn’t been tinkered with.

I paid $15 for this and it will likely be worth about $20 when restored, so I’m looking forward to a nice profit.

I’m attaching a few pictures of the starting point. I’ll update this post as things progress.

Tim


Attachments:
1130 a1 eBay Pic.jpg
1130 a1 eBay Pic.jpg [ 406.55 KiB | Viewed 1524 times ]
1130 a2.jpg
1130 a2.jpg [ 632.24 KiB | Viewed 1524 times ]
1130 a3.jpg
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1130 a4.jpg
1130 a4.jpg [ 651.8 KiB | Viewed 1524 times ]
1130 a5.jpg
1130 a5.jpg [ 688.13 KiB | Viewed 1524 times ]
1130 a6 shell disasm.jpg
1130 a6 shell disasm.jpg [ 661.92 KiB | Viewed 1524 times ]
1130 a7 shell disasm.jpg
1130 a7 shell disasm.jpg [ 688.46 KiB | Viewed 1524 times ]
1130 a8 tape adhesive.jpg
1130 a8 tape adhesive.jpg [ 533.51 KiB | Viewed 1524 times ]


Last edited by Tkilboy on May Thu 26, 2022 6:17 pm, edited 3 times in total.
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 Post subject: Re: Airline ‘Transistor 6’ project, looking for a schematic…
PostPosted: May Sun 15, 2022 12:11 am 
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Joined: Aug Sat 16, 2014 1:19 am
Posts: 2303
Location: Palos Verdes, CA
Tim - You may be able to use the schematic from the Sharp TR-182, which is available from the radiomuseum:

https://www.radiomuseum.org/r/continent ... 2tr18.html


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 Post subject: Re: Airline ‘Transistor 6’ project, looking for a schematic…
PostPosted: May Sun 15, 2022 12:47 am 
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Joined: Jan Tue 31, 2012 12:55 am
Posts: 21392
Location: Bryansford Village. Ireland.
2N219 2N218 2N218 2N215 2N217 2N217 1N34A

Sams Photofact Set-516 Folder-4 covers these models…
ref only: https://www.samswebsite.com/en/photofac ... msid/516_4

$2.99 eBay • four-pages: https://www.ebay.com/itm/224100121093

Image
Large: https://i.ebayimg.com/images/g/6fYAAOSw ... -l1600.jpg


Last edited by egg on May Sun 15, 2022 2:03 pm, edited 1 time in total.

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 Post subject: Re: Airline ‘Transistor 6’ project, looking for a schematic…
PostPosted: May Sun 15, 2022 1:26 pm 
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Joined: Jan Thu 01, 1970 12:00 am
Posts: 1492
Location: Jackson, TN
Mark and Greg,

Thank you for the information, now ready to move forward on electronic side.

Question...
This set has a dual jack assembly which I dont understand.
On one side, its a standard earphone jack which can break the speaker circuit. Got that.
On the other side, it has a contact which will break the battery circuit if something is plugged into it. Is this some sort of external power jack?

Thanks for the help!
Tim


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 Post subject: Re: Airline ‘Transistor 6’ project, looking for a schematic…
PostPosted: May Sun 15, 2022 1:49 pm 
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Location: Bryansford Village. Ireland.
Random 1962 schematic…
https://nvhrbiblio.nl/schema/Airline_GEN1202.pdf

I never liked those 1/8" type power jacks and sockets. lol
best to have the set switched off when inserting.


Attachments:
x.png
x.png [ 16.61 KiB | Viewed 1472 times ]
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 Post subject: Re: Airline ‘Transistor 6’ project, looking for a schematic…
PostPosted: May Sun 15, 2022 3:54 pm 
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Joined: Jan Thu 01, 1970 12:00 am
Posts: 1492
Location: Jackson, TN
Thanks for that detail Greg.

With that I was able to noodle out the 3 broken wires in just a few minutes, solder them back in and power the set up. Still needs work (likely e-caps) but its talking a little.

These old radios seem to be very robust, you have to try hard to kill'em. :lol:

Tim


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 Post subject: Re: Airline ‘Transistor 6’ project, looking for a schematic…
PostPosted: May Sun 15, 2022 3:57 pm 
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Joined: Jan Thu 01, 1970 12:00 am
Posts: 1492
Location: Jackson, TN
I wonder if the 'Ext Battery Jack' was intended for a particular external battery pack or power supply, or if they were just there for those who were resourceful enough to use them.

Thanks, Tim


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 Post subject: Re: Airline ‘Transistor 6’ project, looking for a schematic…
PostPosted: May Sun 15, 2022 5:31 pm 
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Location: Bryansford Village. Ireland.
Zenith 12V Transistor Radio power supply. Guess the year. lol
viewtopic.php?p=2936511#p2936511

Greg.


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 Post subject: Re: Airline ‘Transistor 6’ project, looking for a schematic…
PostPosted: May Sun 15, 2022 6:23 pm 
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Joined: Oct Mon 26, 2009 9:02 pm
Posts: 7644
Location: Indianapolis, IN
Actually has a "zippered" carrying case !

Imagine they either offered a specific power-pack or adapter or recommended one. RCA actually offered a car cord charging cable with A/C adapter for at least one of their models at that time, the 1-T-4, which could use rechargeable batteries in place of regular or mercury "AA"'s. Of course, your jack breaks circuit indicating use of external power source...

John


Attachments:
RCA 1T4 CHARGER1.jpg
RCA 1T4 CHARGER1.jpg [ 388.58 KiB | Viewed 1437 times ]
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 Post subject: Re: Airline ‘Transistor 6’ project, looking for a schematic…
PostPosted: May Sun 15, 2022 7:05 pm 
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Joined: Jan Thu 01, 1970 12:00 am
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Location: Omak,WA,usa
Hello Tim,
nice Set !

Sincerely Richard


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 Post subject: Re: Airline ‘Transistor 6’ project, looking for a schematic…
PostPosted: May Sun 15, 2022 11:00 pm 
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Joined: Jan Thu 01, 1970 12:00 am
Posts: 1492
Location: Jackson, TN
Greg and John,

Those are cool adapters, I did not know they were used for the cheap sets that long ago. I've got a box of assorted walwarts, I'll dig out an old school non-switching 9vdc adapter and install the appropriate 1/8" plug.

I like the convenience of not having to put batteries in whenever I want to listen to a set. It's not that I mind the effort, but it's the wear and tear on old plastic cases, battery clips, etc.

Thanks Richard, this started out as a bit of a POS, but I think it might end up being a pretty little radio.

Tim


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 Post subject: Re: Airline ‘Transistor 6’ project - Update
PostPosted: May Wed 18, 2022 5:23 pm 
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Joined: Jan Thu 01, 1970 12:00 am
Posts: 1492
Location: Jackson, TN
This little gem is coming along, ready for reassembly.

Electronically, a recap found 3 out of 5 e-caps to be defective, having extremely low capacity values. The other two seemed pretty good. Illinois Capacitor was founded in Chicago area in 1934 and is still in business today. Interesting that US capacitors were used in a Japan made radio.

The recap, combined with reconnecting pulled out battery wires and a little TLC for the volume control got the radio working fine. I just tweaked the high end of the tuning alignment and left the rest along. The IF strip seems a little off, but once I saw that the IFTs are locked with white paint, I decided not to push my luck! :? The set is very sensitive, I’ll give it a night time DX test once its back together.

The case needed quite a bit of work…
Dried scotch tape glue was removed using Goo-Gone. It took a few applications over a few hours to get the stuff to finally break loose. It didn’t really melt the glue, but softened it enough where it could be scraped off with a plastic alignment screwdrive. The Goo-Gone seemed to have no effect on the styrene plastic (I did a test on inside surface before applying any)

The orange case was cracked in three places – all repaired with Faller 170492 Plastic Glue (which is an acetone based model glue which has a thin metal needle for controlled application and is thin so it flows into the crack nicely). The bottle of Faller glue was found on eBay for about $7.

There is still a broken screw boss which hasn’t been repaired, I may just try a longer screw. Any ideas for a repair?

After curing, the two external crack repairs were wet sanded then polished with Novus 2. Overall, they came out very good, one would likely never be found, and the other is barely visible.

The metal speaker grill had a creased dent, which was worked out with the rounded end of a screwdriver handle against a wooden block for support. Also, a piece of thin cardboard was used to protect the show side of the metal from scuffing or scratching. Its about 95% eliminated but I stopped for fear of overworking and stretching the metal.

I’ll post again when this radio is back together.

Tim


Attachments:
1130 b1 recap.jpg
1130 b1 recap.jpg [ 543.04 KiB | Viewed 1336 times ]
1130 b2 shell.jpg
1130 b2 shell.jpg [ 641.99 KiB | Viewed 1336 times ]
1130 b3 shell.jpg
1130 b3 shell.jpg [ 697.64 KiB | Viewed 1336 times ]
1130 b4 chassis.jpg
1130 b4 chassis.jpg [ 615.32 KiB | Viewed 1336 times ]
1130 b5 chassis.jpg
1130 b5 chassis.jpg [ 608.5 KiB | Viewed 1336 times ]
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 Post subject: Re: Airline 1131 ‘Transistor 6’ project - Update
PostPosted: May Thu 19, 2022 1:38 am 
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Location: Omak,WA,usa
Hello Tim,
Nice job one thing with lots of these radios some of those capacitors are really buried !
Sincerely Richard


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 Post subject: Re: Airline 1131 ‘Transistor 6’ project - Update
PostPosted: May Thu 19, 2022 5:26 am 
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Joined: Oct Mon 26, 2009 9:02 pm
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Location: Indianapolis, IN
Looking forward to finished "product" !

John


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 Post subject: Re: Airline 1131 ‘Transistor 6’ project - Update
PostPosted: May Fri 20, 2022 4:39 pm 
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Joined: Aug Sat 16, 2014 1:19 am
Posts: 2303
Location: Palos Verdes, CA
I have an Airline GEN-1202-A transistor radio and never noticed the plug for an external power source. The components are similar to the Airline 1131, but the 1202-A uses the gray electrolytic capacitors found in many Channel Master radios that often fail. - Mark


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 Post subject: Re: Airline 1131 ‘Transistor 6’ project - Update
PostPosted: May Sat 21, 2022 1:38 am 
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Mark,
Yes, those darn gray capacitors also I found older Panasonics radios their capacitors are garbage too.
Sincerely Richard


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 Post subject: Re: Airline 1131 ‘Transistor 6’ project - Completed
PostPosted: May Thu 26, 2022 6:20 pm 
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Joined: Jan Thu 01, 1970 12:00 am
Posts: 1492
Location: Jackson, TN
Finished up now. The set looks pretty and works fairly well.

I really like the color and the reverse painted dial escutcheon; I think it will be staying around for a while.

I got to gain a little more practice at making glue repairs to cracked styrene, overall a fun project.

Thanks to those who helped!

Tim


Attachments:
1130 c1 completed.jpg
1130 c1 completed.jpg [ 716.5 KiB | Viewed 990 times ]
1130 c2 completed.jpg
1130 c2 completed.jpg [ 440.35 KiB | Viewed 990 times ]
1130 c3 completed.jpg
1130 c3 completed.jpg [ 537.36 KiB | Viewed 990 times ]
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 Post subject: Re: Airline 1131 ‘Transistor 6’ project - Completed
PostPosted: May Thu 26, 2022 9:05 pm 
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Joined: Oct Mon 26, 2009 9:02 pm
Posts: 7644
Location: Indianapolis, IN
Wow, Tim, that looks great ! You did an excellent job with that dented grille !

John


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 Post subject: Re: Airline 1131 ‘Transistor 6’ project - Completed
PostPosted: May Fri 27, 2022 5:10 am 
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Location: Omak,WA,usa
Hello Tim,
Beautiful job and I too have a set that I need to do the same I have a set or two


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 Post subject: Re: Airline 1131 ‘Transistor 6’ project - Completed
PostPosted: May Fri 27, 2022 11:55 am 
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Joined: Jan Thu 01, 1970 12:00 am
Posts: 1492
Location: Jackson, TN
Thanks John and Rich.

It was a fun project, when summer ends I'll tackle a few more.

Tim


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