16-04-2017, 03:03 PM
Hi Alan,
Thanks for the post with link to your 6-m cavity filter. You've obviously done some excellent work on this. What is the rejection from pass to notch, and what is the loss at the centre of the pass-band? Is there a stability issue with the large loop? Are you happy with it?
I don't really understand how this coupling mechanism works - does it give you more-or-less independent adjustment of offset and notch depth?
It could be worth talking sometime. If you send me an offline message, I will send you my phone number and a couple of photos of my 70 cm cavities / notch filters. Like you, I tune by means of a rod that projects inside the centre element.
Best wishes,
Lew.
Thanks for the post with link to your 6-m cavity filter. You've obviously done some excellent work on this. What is the rejection from pass to notch, and what is the loss at the centre of the pass-band? Is there a stability issue with the large loop? Are you happy with it?
I don't really understand how this coupling mechanism works - does it give you more-or-less independent adjustment of offset and notch depth?
It could be worth talking sometime. If you send me an offline message, I will send you my phone number and a couple of photos of my 70 cm cavities / notch filters. Like you, I tune by means of a rod that projects inside the centre element.
Best wishes,
Lew.