I have the schematic , but still not sure how to attach it here. It is using a rather standard tube set for German Radio, EC85, ECH81 & EF89 for tuning purpose.

The radio basically sound pretty good, but FM station drifts slighty ( I can still hear it just not as clear) . The problem is more obvious in the 1st 15 min of power up. Wonder which passive components of above tubes are more likely the cause.

Thanks

http://picasaweb.google.com/lh/photo/9xq5nqmvyesDU2QhmG-Qbg?authkey=Gv1sRgCLO7ivzvvMCHvgE&feat=directlink

Here is the link to the schematic, hope it works. It is attached to the inside of the back panel

:I have the schematic , but still not sure how to attach it here. It is using a rather standard tube set for German Radio, EC85, ECH81 & EF89 for tuning purpose.
:
:The radio basically sound pretty good, but FM station drifts slighty ( I can still hear it just not as clear) . The problem is more obvious in the 1st 15 min of power up. Wonder which passive components of above tubes are more likely the cause.
:
:Thanks
:

:http://picasaweb.google.com/lh/photo/9xq5nqmvyesDU2QhmG-Qbg?authkey=Gv1sRgCLO7ivzvvMCHvgE&feat=directlink
:
:
:Here is the link to the schematic, hope it works. It is attached to the inside of the back panel
:
:
::I have the schematic , but still not sure how to attach it here. It is using a rather standard tube set for German Radio, EC85, ECH81 & EF89 for tuning purpose.
::
::The radio basically sound pretty good, but FM station drifts slighty ( I can still hear it just not as clear) . The problem is more obvious in the 1st 15 min of power up. Wonder which passive components of above tubes are more likely the cause.
::
::Thanks
::
:

::http://picasaweb.google.com/lh/photo/9xq5nqmvyesDU2QhmG-Qbg?authkey=Gv1sRgCLO7ivzvvMCHvgE&feat=directlink
::
::
::Here is the link to the schematic, hope it works. It is attached to the inside of the back panel
::
::
:::I have the schematic , but still not sure how to attach it here. It is using a rather standard tube set for German Radio, EC85, ECH81 & EF89 for tuning purpose.
:::
:::The radio basically sound pretty good, but FM station drifts slighty ( I can still hear it just not as clear) . The problem is more obvious in the 1st 15 min of power up. Wonder which passive components of above tubes are more likely the cause.
:::
:::Thanks
:::
::
:
:Drift is almost always in the oscillator section. The schematic is REALLY hard to read, but I would suspect parts around the ECH 81. Try the old remedy for a sprain- first some cold spray, then the hairdryer. Try and isolate each component. Leaky capacitor would be my guess- but some of the other members can probably dial it in better than me. Have fun!
:

:::http://picasaweb.google.com/lh/photo/9xq5nqmvyesDU2QhmG-Qbg?authkey=Gv1sRgCLO7ivzvvMCHvgE&feat=directlink
:::
:::
:::Here is the link to the schematic, hope it works. It is attached to the inside of the back panel
:::
:::
::::I have the schematic , but still not sure how to attach it here. It is using a rather standard tube set
for German Radio, EC85, ECH81 & EF89 for tuning purpose.
::::

RE: schematics. I don't want to advertise for anyone on this site- but I purchased a DVD on eBay that includes 58 thousand schematics, plus all of the Rider's manuals. So far the only schematic I haven't found is for the Lectradio. These include sets from the 20' and 30's. I can post the address if that's cool.
::::The radio basically sound pretty good, but FM station drifts slighty ( I can still hear it just not as clear) . The problem is more obvious in the 1st 15 min of power up. Wonder which passive components of above tubes are more likely the cause.
::::
::::Thanks
::::
:::
::
::Drift is almost always in the oscillator section. The schematic is REALLY hard to read, but I would suspect parts around the ECH 81. Try the old remedy for a sprain- first some cold spray, then the hairdryer. Try and isolate each component. Leaky capacitor would be my guess- but some of the other members can probably dial it in better than me. Have fun!
::
:
:Hi Terry,
:
:I have a very good JPEG file of the schematic,wonder if there is a better way to attach it
:

Hi Terry ,

Please post address for schematic DVD , I am interested.

Thanks

::::http://picasaweb.google.com/lh/photo/9xq5nqmvyesDU2QhmG-Qbg?authkey=Gv1sRgCLO7ivzvvMCHvgE&feat=directlink
::::
::::
::::Here is the link to the schematic, hope it works. It is attached to the inside of the back panel
::::
::::
:::::I have the schematic , but still not sure how to attach it here. It is using a rather standard tube set
:for German Radio, EC85, ECH81 & EF89 for tuning purpose.
:::::
:
:RE: schematics. I don't want to advertise for anyone on this site- but I purchased a DVD on eBay that includes 58 thousand schematics, plus all of the Rider's manuals. So far the only schematic I haven't found is for the Lectradio. These include sets from the 20' and 30's. I can post the address if that's cool.
:::::The radio basically sound pretty good, but FM station drifts slighty ( I can still hear it just not as clear) . The problem is more obvious in the 1st 15 min of power up. Wonder which passive components of above tubes are more likely the cause.
:::::
:::::Thanks
:::::
::::
:::
:::Drift is almost always in the oscillator section. The schematic is REALLY hard to read, but I would suspect parts around the ECH 81. Try the old remedy for a sprain- first some cold spray, then the hairdryer. Try and isolate each component. Leaky capacitor would be my guess- but some of the other members can probably dial it in better than me. Have fun!
:::
::
::Hi Terry,
::
::I have a very good JPEG file of the schematic,wonder if there is a better way to attach it
::
: