Hi all... I have a tech question....I have a old battery operated radio..3 dialer (has 5 201A tubes in it..and is not a known brand name)It has two transformers (two windings each)...one is good the other is bad. The first one has a ratio of 5 to 1 (AND IS BAD) The second one has a ratio 3 to one (and is good) MY QUESTION IS: If I replace the 5 to 1 transformer with a 10 to 1 transformer will this hurt or improve preformance....(I ask because I have found a transforer in my junk and before I rip things apart...thought I would ask those who know more than I) Also one last question...Of the transformers two windings the one deepest in the coil ..is that the primary or secondary winding?

I believe you are speaking of audio interstage xfmrs. 1:3 units from RadioDaze or AES will work fine. They act as a step-up xfmr, so the primary has fewer turns.

May not be possible to deduce the turns ratio from winding resistance measurements. One winding, being on top of the other, can affect its total length. Also, wire gauges may be different.

But 1:3 audio xfmrs are considered standard replacements for the old 3-dial TRFs.

Yes Doug these are audio interstage transformers...The first one is 5 to 1 and second one is 3 to 1....If I replace the 5 to 1 with a 10 to 1...will this effect preformance or enhance it???

:I believe you are speaking of audio interstage xfmrs. 1:3 units from RadioDaze or AES will work fine. They act as a step-up xfmr, so the primary has fewer turns.
:
:May not be possible to deduce the turns ratio from winding resistance measurements. One winding, being on top of the other, can affect its total length. Also, wire gauges may be different.
:
:But 1:3 audio xfmrs are considered standard replacements for the old 3-dial TRFs.

a 10 to 1 will over drive the tube and blow it out with too much power

:Yes Doug these are audio interstage transformers...The first one is 5 to 1 and second one is 3 to 1....If I replace the 5 to 1 with a 10 to 1...will this effect preformance or enhance it???
:
:
::I believe you are speaking of audio interstage xfmrs. 1:3 units from RadioDaze or AES will work fine. They act as a step-up xfmr, so the primary has fewer turns.
::
::May not be possible to deduce the turns ratio from winding resistance measurements. One winding, being on top of the other, can affect its total length. Also, wire gauges may be different.
::
::But 1:3 audio xfmrs are considered standard replacements for the old 3-dial TRFs.

:a 10 to 1 will over drive the tube and blow it out with too much power
:
::Yes Doug these are audio interstage transformers...The first one is 5 to 1 and second one is 3 to 1....If I replace the 5 to 1 with a 10 to 1...will this effect preformance or enhance it???
::
::
:::I believe you are speaking of audio interstage xfmrs. 1:3 units from RadioDaze or AES will work fine. They act as a step-up xfmr, so the primary has fewer turns.
:::
:::May not be possible to deduce the turns ratio from winding resistance measurements. One winding, being on top of the other, can affect its total length. Also, wire gauges may be different.
:::
:::But 1:3 audio xfmrs are considered standard replacements for the old 3-dial TRFs.

Soo just to be clear..I have a 5 to 1 (audio interstage) transformer that is bad in my old 3 dialer battery set...If I replace with a 10 to 1 that will be way to much??? I use to unwind these small old transformers and fix the break(s) in the secondary winding..would take all day since the wire is as fine as frogs hair...Anyway...hmmmmmm maybe I should just use a resistor and coupling cap (like Norm suggests in his article)...but.. to me that just seems lazy ...and takes the fun out of it...hmmmmmmmm

:a 10 to 1 will over drive the tube and blow it out with too much power
:
::Yes Doug these are audio interstage transformers...The first one is 5 to 1 and second one is 3 to 1....If I replace the 5 to 1 with a 10 to 1...will this effect preformance or enhance it???
::
::
:::I believe you are speaking of audio interstage xfmrs. 1:3 units from RadioDaze or AES will work fine. They act as a step-up xfmr, so the primary has fewer turns.
:::
:::May not be possible to deduce the turns ratio from winding resistance measurements. One winding, being on top of the other, can affect its total length. Also, wire gauges may be different.
:::
:::But 1:3 audio xfmrs are considered standard replacements for the old 3-dial TRFs.

I may be wrong but I dont think a 10 to 1 will "blow up the tube" from too much power like he said.

:Soo just to be clear..I have a 5 to 1 (audio interstage) transformer that is bad in my old 3 dialer battery set...If I replace with a 10 to 1 that will be way to much??? I use to unwind these small old transformers and fix the break(s) in the secondary winding..would take all day since the wire is as fine as frogs hair...Anyway...hmmmmmm maybe I should just use a resistor and coupling cap (like Norm suggests in his article)...but.. to me that just seems lazy ...and takes the fun out of it...hmmmmmmmm
:
::a 10 to 1 will over drive the tube and blow it out with too much power
::
:::Yes Doug these are audio interstage transformers...The first one is 5 to 1 and second one is 3 to 1....If I replace the 5 to 1 with a 10 to 1...will this effect preformance or enhance it???
:::
:::
::::I believe you are speaking of audio interstage xfmrs. 1:3 units from RadioDaze or AES will work fine. They act as a step-up xfmr, so the primary has fewer turns.
::::
::::May not be possible to deduce the turns ratio from winding resistance measurements. One winding, being on top of the other, can affect its total length. Also, wire gauges may be different.
::::
::::But 1:3 audio xfmrs are considered standard replacements for the old 3-dial TRFs.

:I may be wrong but I dont think a 10 to 1 will "blow up the tube" from too much power like he said.

Yes Jerry, you are correct. By using the incorrect transformer the performance will change. The tube will not blow up.

Dave