Hello
Please tell me what isolates the earth and aerial from DC or AC potential which would cause those wires to become live.
Thanks in advance
Joe

:Hello
:Please tell me what isolates the earth and aerial from DC or AC potential which would cause those wires to become live.
:Thanks in advance
:Joe
:

It would help if we knew the make and model of radio you have. Most radios have an antenna transformer; connecting an external antenna would not be a direct connection to the circuits (power supply or AC line). Some AC-DC radios have one side of the AC connected to the chassis; some have an indirect connection through a capacitor or resistor/capacitor network; the antenna should not be connected to the B+ line or the AC line. If it is, someone has made a wiring error that should be corrected immediately.
Johnnysan-

::Hello
::Please tell me what isolates the earth and aerial from DC or AC potential which would cause those wires to become live.
::Thanks in advance
::Joe
::
:
:
:It would help if we knew the make and model of radio you have. Most radios have an antenna transformer; connecting an external antenna would not be a direct connection to the circuits (power supply or AC line). Some AC-DC radios have one side of the AC connected to the chassis; some have an indirect connection through a capacitor or resistor/capacitor network; the antenna should not be connected to the B+ line or the AC line. If it is, someone has made a wiring error that should be corrected immediately.
:Johnnysan-
:
:
:
:thanks for the reply. The radio is a Philips 105 AC only.
It appears that there was an antenna connection via mica capacitors in series but getting 186 volts on aerial line. May be leakage early in the circuit.

:::Hello
:::Please tell me what isolates the earth and aerial from DC or AC potential which would cause those wires to become live.
:::Thanks in advance
:::Joe
:::
::
::
::It would help if we knew the make and model of radio you have. Most radios have an antenna transformer; connecting an external antenna would not be a direct connection to the circuits (power supply or AC line). Some AC-DC radios have one side of the AC connected to the chassis; some have an indirect connection through a capacitor or resistor/capacitor network; the antenna should not be connected to the B+ line or the AC line. If it is, someone has made a wiring error that should be corrected immediately.
::Johnnysan-
::
::
::
::thanks for the reply. The radio is a Philips 105 AC only.
:It appears that there was an antenna connection via mica capacitors in series but getting 186 volts on aerial line. May be leakage early in the circuit.
:
:

In that case, I would replace all capacitors in that radio, just to be safe.
Johnnysan-

::::Hello
::::Please tell me what isolates the earth and aerial from DC or AC potential which would cause those wires to become live.
::::Thanks in advance
::::Joe
::::
:::
:::
:::It would help if we knew the make and model of radio you have. Most radios have an antenna transformer; connecting an external antenna would not be a direct connection to the circuits (power supply or AC line). Some AC-DC radios have one side of the AC connected to the chassis; some have an indirect connection through a capacitor or resistor/capacitor network; the antenna should not be connected to the B+ line or the AC line. If it is, someone has made a wiring error that should be corrected immediately.
:::Johnnysan-
:::
:::
:::
:::thanks for the reply. The radio is a Philips 105 AC only.
::It appears that there was an antenna connection via mica capacitors in series but getting 186 volts on aerial line. May be leakage early in the circuit.
::
::
:
:
:In that case, I would replace all capacitors in that radio, just to be safe.
:Johnnysan-
:
:
:Hello,
You were correct,
Active and neutral were reversed ,
Thanking you from australia
:
:

If you are using a digital volt meter, those meters pick up every bit of stray current there is to discover. In actuality, if the capacitors are mica, they are likely fine, and at those small capacitances pose no shock hazard. As capacitors pass AC, your meter probably read the AC, but due to the very small capacitance of the capacitors, the amount they pass is probably not enough to even cause a tingle.

T.