| Home |
| Search |
| Today's Posts |
|
#5
July 27th 03, 02:20 PM
|
|||
|
|||
On Sat, 26 Jul 2003 21:20:18 -0700, Watson A.Name - 'Watt Sun'
wrote: In article , mentioned... Take a look at lowband filters and duplexers from CellWave, Telewave, etc. Your filter is going to be a coaxial cavity about 2mx20cm with piston for tuning. I am sure there are some better approaches to your task  How about a helical resonator. They're smaller than a cavity, maybe not as high Q, but still higher than lumped constant tuned circuit. They're tunable, but I'm not sure how much. I'd like to live long enough to see a helical at 40MHz that can 'attenuate the hell" out of signals outside the Fr+/-20kHz channel. |
| Thread Tools | Search this Thread |
| Display Modes | |
|
|
Similar Threads
|
||||
| Thread | Forum | |||
| Ten-Tec filters | Boatanchors | |||
| 'other' Kenwood SSB Filters : YK-88S1 and YK-88S2 | Equipment | |||
| 'other' Kenwood SSB Filters : YK-88S1 and YK-88S2 | Equipment | |||
| 'other' Kenwood SSB Filters : YK-88S1 and YK-88S2 | Equipment | |||
| FS: New Crystal Filters $25.00 | Boatanchors | |||
Threaded Mode
