Troubleshoot Phillips 483x at converter stage (ech4 tube) (Techniek Radio/TV)

door Radiosterk , 19.06.2018, 17:43 (2132 dagen geleden) @ Radiosterk
Bewerkt door Radiosterk, 19.06.2018, 18:00

Hi all,

Is there any way to test the ech4 tube in another real circuit only, i just want to check if the ech4 tube and tube socket works well ?
The oscillator of this converter tube is working good. There is rf signal 452 KHz on pin 8 (anode of heptode) of ech4 tube, but no modulated rf signal just flat rf 452 KHz. No reception or noise at all, but when i injected modulated rf 452 KHz using Eico generator, i could hear loud tone on speaker.

Thank you, your respond is highly appreciate it.

Warm Regards,

Winstony