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- MSG # TR SIZE TO FROM @BBS DATE TITLE
- 7497 B# 1203 ALL VE3IWJ ALLBBS 890217 KAM hf carrier detect mod.
- Forwarding path: KB3X VE3SNP VE3NUU VE3FJB VE3JF VE3IWJ
-
- I noticed that the KAM, when connected or trying to connect, will start
- to transmit on top of an other signal at times. This will happen when a
- received signal appears just before the the KAM wants to transmit.
- It is visible by looking at the mark/space display. After a quiet period
- a received signal will light up the bargraph display and the KAM will
- transmit on top of it.
-
- Looking at the circuit diagram, I noticed a 1 uF capacitor (c 29) in the
- carrier detect circuit. It seems to slow down the detect function more
- than desired. Changing the capacitor to .1 uF made the carrier detect
- work more the way I expect it to. It is easy to get at. Somewhere in the
- middle of the board. There is a layout in the manual.
- I didn't ask Kantronics about it. And I didn't notice any side effects.
- I also didn't try it in any of the other modes.
-
- Comment to ve3iwj @ ve3iwj. 73 Nand.
-
- Via WA8BXN BBS & WD8SCH - 02/17/89
-
-
- Cleveland HAMNET File: KAMMOD.TXT
-
-