- 1. [AMPS] Parasitic Experience? What to do? (LONG) (score: 1)
- Author: elmore@nssl.noaa.gov (Kim Elmore)
- Date: Mon, 28 Jan 2002 10:28:55 -0600
- Hi all, I've been watching the list for a few days to get the feel of it and have decided to post a recent experience, reveal my foolishness, and ask for advice. I've owned an AL-80A since about 1987
- /archives//html/Amps/2002-01/msg00226.html (11,931 bytes)
- 2. [AMPS] Parasitic Experience? What to do? (LONG) (score: 1)
- Author: rakefet@rakefet.com (Vic Rosenthal)
- Date: Mon, 28 Jan 2002 09:16:02 -0800
- The original Eimac tube shows no grid-to-anything shorts. It's been my experience that some Eimac 3-500z's develop grid-cathode shorts when they are hot, which then go way when the tube is cool. Alth
- /archives//html/Amps/2002-01/msg00230.html (7,511 bytes)
- 3. [AMPS] Parasitic Experience? What to do? (LONG) (score: 1)
- Author: 2@mail.vcnet.com (rich)
- Date: Mon, 28 Jan 2002 16:15:10 -0800
- ? The stock bandswitch is not ok with a 4kV anode supply. 21uF is about 200% more than is needed for a FWB. Silicone rubber mounting helps. The 10m coil material is not sufficient to compensate for
- /archives//html/Amps/2002-01/msg00238.html (13,768 bytes)
- 4. [AMPS] Parasitic Experience? What to do? (LONG) (score: 1)
- Author: W8JI@akorn.net (Tom Rauch)
- Date: Mon, 28 Jan 2002 20:43:56 -0500
- You are now far over the safe limits of the bandswitch and tuning capacitor. The bandswitch is reasonably reliable up to about ~3200 volts DC anode voltage with normal conditions of mistuning. Same
- /archives//html/Amps/2002-01/msg00243.html (10,193 bytes)
- 5. [AMPS] Parasitic Experience? What to do? (LONG) (score: 1)
- Author: 2@mail.vcnet.com (rich)
- Date: Tue, 29 Jan 2002 04:59:08 -0800
- Good points. Decreasing the Q (by using low-Q conductor material) of the AL-80's extant anode-resonance ar c. 150MHz is going to do such? Not unless Ni-Cr-Fe alloy has more RF resistance as freq dec
- /archives//html/Amps/2002-01/msg00254.html (11,535 bytes)
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