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 Post subject: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Mon 20, 2021 11:01 pm 
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Joined: Oct Fri 23, 2020 7:57 pm
Posts: 83
Location: Deerfield Beach, Fl
Hi all. Looking for some help and a few suggestions for my newest find. Day Fan 5 tube. My first test showed the audio transformers to be open. I see a lot of corrosion on many of the rivet connections which I will polish off and re solder as necessary as well as one disconnected wire from (I think) a coil. Searched for a schematic and found one that may be close. Not sure. I have attached along with my pictures. The voltage measurement's shown on the tube layout has me a bit confused. The filaments show 6.17 volts on one side and 2.39 on the other side. Whats up with that?
The radio has no 1/4 speaker/head phones jack. I have no speaker or headset with this small plug without cutting and splicing which I really don't want to do. Was thinking of adding a 1/4 jack to the rear of the set, looks to be a simple 2 wire hook up. Is that something that will work?
Any other info that I should be looking for?


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 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 4:56 pm 
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Joined: Nov Wed 09, 2011 3:55 am
Posts: 50
Location: victoria bc canada
Do you have a 1920s high impedence headphone or speaker , for testing ?


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 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 5:11 pm 
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Joined: May Sat 30, 2015 11:49 pm
Posts: 1945
Location: Keystone Heights, FL, USA 32656
Warewasher2025 wrote:
The voltage measurement's shown on the tube layout has me a bit confused. The filaments show 6.17 volts on one side and 2.39 on the other side. Whats up with that?

Whoever made those measurements was measuring between the "A" battery terminal and the socket connections. 6.17 volts is the supply voltage. 2.39 is what is left over after powering the filaments (at 3.78 volts). The remaining 2.39 volts is dissipated at the rheostat. Moving the rheostat knob would change the 2.39 volts, either higher of lower, depending on the setting of the rheostat.

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“Nothin’s worth nothin ‘till somebody wants it.”—Irv Metter


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 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 6:07 pm 
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Joined: Oct Fri 23, 2020 7:57 pm
Posts: 83
Location: Deerfield Beach, Fl
I do have a high impedance horn type speaker as well a 2000 ohm head set. Both have 1/4 plug for a speaker jack.


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 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 6:19 pm 
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Joined: May Sat 30, 2015 11:49 pm
Posts: 1945
Location: Keystone Heights, FL, USA 32656
Unscrew the plastic housing and see how the wires are attached. They may be pin-type ends attached with screws.

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“Nothin’s worth nothin ‘till somebody wants it.”—Irv Metter


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 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 6:42 pm 
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Joined: May Mon 25, 2020 7:37 pm
Posts: 852
Location: Greater Boston, MA
jrehkopf wrote:
Unscrew the plastic housing and see how the wires are attached. They may be pin-type ends attached with screws.
That's exactly what was inside the 1/4" plug on a recently acquired high impedance headset of mine.


Last edited by tym on Sep Tue 21, 2021 6:57 pm, edited 1 time in total.

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 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 6:44 pm 
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Joined: Oct Fri 23, 2020 7:57 pm
Posts: 83
Location: Deerfield Beach, Fl
No such luck. Wires are all soldered.


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 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 6:51 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 16869
Location: S. Dartmouth MA 02748-1225 USA
Adding phone tips to tinsel cord is a simple process that involves either soldering or crimping...

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 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 9:05 pm 
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Joined: Oct Fri 23, 2020 7:57 pm
Posts: 83
Location: Deerfield Beach, Fl
Any idea where I might find a set of those pin type tips? Been searching all logical sites but none turn up. Only Radio Daz but they are sold out.
Thanks
Dave


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 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 10:12 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 16869
Location: S. Dartmouth MA 02748-1225 USA
Warewasher2025 wrote:
Any idea where I might find a set of those pin type tips? Been searching all logical sites but none turn up. Only Radio Daze but they are sold out.
Thanks
Dave
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See:

viewtopic.php?f=6&t=86517

AND

https://www.antiqueradios.com/forums/vi ... 6&t=303822

Sort though the suggestions. Alan Douglas technique works, it is the same one I use...

PM your postal address, I'll send four tips... Reimburse the postage in envelope provided in cash.

https://www.keyelco.com/search-results. ... ps&x=0&y=0

Do the product location search, seems Mouser has the market cornered :roll:

Keystone "may" send a sample too... But that is just one...

I wrap the trimmed tinsel cord with either bare or tinned #28 copper wire, apply liquid solder flux and tin the copper wire wrap (whipping).

How much to trim off of the cord braid and how much to wrap with bare wire is mostly experimental. If wrapped too long the wrap will hang out of the tip. If not wrapped tight enough the end won't go into the phone tip. Do not use a grease base flux, no acid flux and not too much liquid flux (it will make the cord stiff) It is a matter of practice :roll:

When I solder tips I jam the tip into the electrode posts in a Weller gun. The current shunts through the tip, the posts hold the tip in place as long as one does not get rough. Feed a little rosin core solder into the tip, then plunge in the prepared tinsel wire. Don't roast the flux, clickety, click..

Chas

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 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 10:55 pm 
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Joined: Oct Fri 23, 2020 7:57 pm
Posts: 83
Location: Deerfield Beach, Fl
Thanks Chas
Mouser works. Ordered enough to practice! :D


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 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 11:16 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 16869
Location: S. Dartmouth MA 02748-1225 USA
Warewasher2025 wrote:
Thanks Chas
Mouser works. Ordered enough to practice! :D
To some extent, soldered phone tips are reusable. Heat with Weller, tap electrodes on corner of bench with trapped tip, solder will "bump" out... If tips are crimped, trash...

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