Coronado 675 Cap ID

3/27/2011 6:29:23 PMBob E

I have removed a cap that connects to chassis ground and one side of the antenna choke coil. I believe this
cap is C19 on the schematic. It has a value of .01 uuf.
The part removed is "wax" Sealdtite paper capacitor and has the value in red ink on the brown outer cover that says I think 100-18K. I am asking what size modern replace cap do I use here? The double u in the .01 uuf and the 18 K is not clear to me as to what to use as a replacement. Thanks,Bob

3/27/2011 7:03:10 PMJohnnysan

:I have removed a cap that connects to chassis ground and one side of the antenna choke coil. I believe this
:cap is C19 on the schematic. It has a value of .01 uuf.
:The part removed is "wax" Sealdtite paper capacitor and has the value in red ink on the brown outer cover that says I think 100-18K. I am asking what size modern replace cap do I use here? The double u in the .01 uuf and the 18 K is not clear to me as to what to use as a replacement. Thanks,Bob
:

That would be a misprint in Riders; there is no .01uuf. It would have to be .01uf.
Johnnysan

3/27/2011 7:15:49 PMNorm Leal

Hi Bob

Can you measure the part? I wouldn't replace this cap unless it's known to be bad. Doubt it's a .01 mf and .01 mmf doesn't make sense.

http://www.nostalgiaair.org/PagesByModel/105/M0007105.pdf

Since this cap is across a coil in the antenna circuit .01 mf is too large. No such thing as .01 mmf in a radio. This would be like two pieces of wire being close together.

Norm

::I have removed a cap that connects to chassis ground and one side of the antenna choke coil. I believe this
::cap is C19 on the schematic. It has a value of .01 uuf.
::The part removed is "wax" Sealdtite paper capacitor and has the value in red ink on the brown outer cover that says I think 100-18K. I am asking what size modern replace cap do I use here? The double u in the .01 uuf and the 18 K is not clear to me as to what to use as a replacement. Thanks,Bob
::
:
:
:That would be a misprint in Riders; there is no .01uuf. It would have to be .01uf.
:Johnnysan
:
:
:
:

3/27/2011 8:16:58 PMPictures posted to Photobucket

Does this help at all?

http://s231.photobucket.com/albums/ee203/bobwiththeradioproblem/?start=all

3/27/2011 8:19:25 PMBob E

Removed from the circuit,as is, it tests .o2uf

:Hi Bob
:
: Can you measure the part? I wouldn't replace this cap unless it's known to be bad. Doubt it's a .01 mf and .01 mmf doesn't make sense.
:
:http://www.nostalgiaair.org/PagesByModel/105/M0007105.pdf
:
: Since this cap is across a coil in the antenna circuit .01 mf is too large. No such thing as .01 mmf in a radio. This would be like two pieces of wire being close together.
:
:Norm
:
:::I have removed a cap that connects to chassis ground and one side of the antenna choke coil. I believe this
:::cap is C19 on the schematic. It has a value of .01 uuf.
:::The part removed is "wax" Sealdtite paper capacitor and has the value in red ink on the brown outer cover that says I think 100-18K. I am asking what size modern replace cap do I use here? The double u in the .01 uuf and the 18 K is not clear to me as to what to use as a replacement. Thanks,Bob
:::
::
::
::That would be a misprint in Riders; there is no .01uuf. It would have to be .01uf.
::Johnnysan
::
::
::
::
:
:

3/27/2011 8:43:36 PMNorm Leal

Sure looks like a .01 or .02 mf. If that's the case you don't need the antenna coil across this cap. The coil is effectively shorted out by this cap. Could be replaced by a piece of wire.

A .01 mf cap at RF frequencies acts just about as a short. Maybe it has an 18K resistor in series with the cap?

Norm

:Removed from the circuit,as is, it tests .o2uf
:
:
::Hi Bob
::
:: Can you measure the part? I wouldn't replace this cap unless it's known to be bad. Doubt it's a .01 mf and .01 mmf doesn't make sense.
::
::http://www.nostalgiaair.org/PagesByModel/105/M0007105.pdf
::
:: Since this cap is across a coil in the antenna circuit .01 mf is too large. No such thing as .01 mmf in a radio. This would be like two pieces of wire being close together.
::
::Norm
::
::::I have removed a cap that connects to chassis ground and one side of the antenna choke coil. I believe this
::::cap is C19 on the schematic. It has a value of .01 uuf.
::::The part removed is "wax" Sealdtite paper capacitor and has the value in red ink on the brown outer cover that says I think 100-18K. I am asking what size modern replace cap do I use here? The double u in the .01 uuf and the 18 K is not clear to me as to what to use as a replacement. Thanks,Bob
::::
:::
:::
:::That would be a misprint in Riders; there is no .01uuf. It would have to be .01uf.
:::Johnnysan
:::
:::
:::
:::
::
::
:
: