Forums :: NEW! Web Resources :: Features :: Photo Gallery :: Vintage Radio Shows :: Archives
Support This Site: Contributors :: Advertise


It is currently Dec Fri 03, 2021 2:38 am


All times are UTC [ DST ]





Post New Topic Post Reply  [ 17 posts ] 
Author Message
 Post subject: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Mon 20, 2021 11:01 pm 
Member

Joined: Oct Fri 23, 2020 7:57 pm
Posts: 92
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?


Attachments:
DSCN3150s.JPG
DSCN3150s.JPG [ 774.95 KiB | Viewed 671 times ]
DSCN3149s.JPG
DSCN3149s.JPG [ 751.89 KiB | Viewed 671 times ]
DSCN3147s.JPG
DSCN3147s.JPG [ 849.54 KiB | Viewed 671 times ]
DSCN3148s.JPG
DSCN3148s.JPG [ 875.31 KiB | Viewed 671 times ]
dayfan 5 ss2.JPG
dayfan 5 ss2.JPG [ 76.46 KiB | Viewed 671 times ]
Dayfan 5 ss1.JPG
Dayfan 5 ss1.JPG [ 129.97 KiB | Viewed 671 times ]
DSCN3151s.JPG
DSCN3151s.JPG [ 646.16 KiB | Viewed 656 times ]
Top
 Profile  
 
 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 4:56 pm 
Member

Joined: Nov Wed 09, 2011 3:55 am
Posts: 52
Location: victoria bc canada
Do you have a 1920s high impedence headphone or speaker , for testing ?


Top
 Profile  
 
 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 5:11 pm 
Member

Joined: May Sat 30, 2015 11:49 pm
Posts: 2046
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.

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


Top
 Profile  
 
 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 6:07 pm 
Member

Joined: Oct Fri 23, 2020 7:57 pm
Posts: 92
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.


Top
 Profile  
 
 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 6:19 pm 
Member

Joined: May Sat 30, 2015 11:49 pm
Posts: 2046
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.

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


Top
 Profile  
 
 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 6:42 pm 
Member

Joined: May Mon 25, 2020 7:37 pm
Posts: 959
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.

Top
 Profile  
 
 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 6:44 pm 
Member

Joined: Oct Fri 23, 2020 7:57 pm
Posts: 92
Location: Deerfield Beach, Fl
No such luck. Wires are all soldered.


Top
 Profile  
 
 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 6:51 pm 
Member
User avatar

Joined: Jan Thu 01, 1970 1:00 am
Posts: 17008
Location: S. Dartmouth MA 02748-1225 USA
Adding phone tips to tinsel cord is a simple process that involves either soldering or crimping...

_________________
List' & I will Enchant Thine Ear


Top
 Profile  
 
 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 9:05 pm 
Member

Joined: Oct Fri 23, 2020 7:57 pm
Posts: 92
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


Top
 Profile  
 
 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 10:12 pm 
Member
User avatar

Joined: Jan Thu 01, 1970 1:00 am
Posts: 17008
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
Attachment:
1601.png
1601.png [ 268.67 KiB | Viewed 591 times ]

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

_________________
List' & I will Enchant Thine Ear


Top
 Profile  
 
 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 10:55 pm 
Member

Joined: Oct Fri 23, 2020 7:57 pm
Posts: 92
Location: Deerfield Beach, Fl
Thanks Chas
Mouser works. Ordered enough to practice! :D


Top
 Profile  
 
 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Sep Tue 21, 2021 11:16 pm 
Member
User avatar

Joined: Jan Thu 01, 1970 1:00 am
Posts: 17008
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...

_________________
List' & I will Enchant Thine Ear


Top
 Profile  
 
 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Nov Sun 07, 2021 10:31 pm 
Member

Joined: Oct Fri 23, 2020 7:57 pm
Posts: 92
Location: Deerfield Beach, Fl
I got this radio playing very well. Replaced both audio transformers, re soldered a few wires and cleaned up some corrosion on some solder joint. Also re flowed several solder joints. I have good volume and good selectivity. I've been listening pretty much daily with my 2000 ohm headset. The weird problem that I have is when ever I plug a speaker (I have 3 1920's ish) into the jack I get a high pitch whistle. The same high pitch whistle that I get when I pass my hand inside the cabinet to adjust the volume. This set has 2 volume controls. One inside between the detector tube and the tuning coil and one on the front panel. Neither has any effect on the high pitch whistle sound , it's like a feed back sound but what could bee feeding back I have no clue. I assume passing my hand near the detector is some capacitance issue???
No high pitch sound with the head set plugged in.

Any thoughts on what may be causing this sound in my speaker??

Thanks
Dave


Top
 Profile  
 
 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Nov Sun 07, 2021 10:58 pm 
Member
User avatar

Joined: Jan Thu 01, 1970 1:00 am
Posts: 17008
Location: S. Dartmouth MA 02748-1225 USA
Bad contacts on stage control jacks, poor or long path to EARTH ground, high impedance DC power source like 9 volt transistor batteries, leaky or non existent audio bypass capacitor, usually across the B+ for the power, sometimes across the detector B+, open or missing mica bypass across the 1st audio transformer primary. Another poor connection, missed some place. The use of clip leads to connect to power source instead a cable/harness to keep the power connections away from the antenna/ground connection. Dirty tips on the tube pins, scrape off that grey oxidized lead, burnish the tube socket tangs with a Steno (gritty) eraser.
Warewasher2025 wrote:
...Replaced both audio transformers...
Insufficient plate load DC resistance in the replacement audio transformers. GL Chas

_________________
List' & I will Enchant Thine Ear


Top
 Profile  
 
 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Nov Tue 09, 2021 5:30 pm 
Member

Joined: May Sat 30, 2015 11:49 pm
Posts: 2046
Location: Keystone Heights, FL, USA 32656
No stage control jacks on this radio.

Dave, what did you replace the audio transformers with? You might try reversing the secondary wiring on one of the transformers (long shot idea).

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


Top
 Profile  
 
 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Nov Wed 10, 2021 4:19 am 
Member

Joined: Oct Fri 23, 2020 7:57 pm
Posts: 92
Location: Deerfield Beach, Fl
Hello Jeff:
I replaced both audio transformers with PT 156 from AES. Today I started with the simple things, sanding the tube tips and polishing the tube socket tabs. I have tried switching out the detector tube because slight vibrations close to the tubes create a lot of noise. I have the radio reinstalled in the case since it was playing well in my headset, I thought I was done. When I have some time in the next few days I'll try reversing the transformer leads. But I hesitate since that maneuver a few months back caused one of my my Freshman's to stop working. But I would rather listed to this radio through a speaker than a headset.


Top
 Profile  
 
 Post subject: Re: Just acquired a DAY FAN 5049 5 Tube
PostPosted: Nov Wed 10, 2021 4:30 am 
Member

Joined: Oct Fri 23, 2020 7:57 pm
Posts: 92
Location: Deerfield Beach, Fl
Another thought
Chas wrote: Insufficient plate load DC resistance in the replacement audio transformers.

Should I add some resistance between the plate and the transformer to make up the difference from the old transformer?


Top
 Profile  
 
Post New Topic Post Reply  [ 17 posts ]  Moderators: Norm Leal, Marcc

All times are UTC [ DST ]


Who is online

Users browsing this forum: eaglerockrecordplayers, Google [Bot], Majestic-12 [Bot], rck46 and 47 guests



Search for:
Jump to:  




































Privacy Policy :: Powered by phpBB