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Total 9 documents matching your query.

1. [WriteLog] ptt line resistance? (score: 1): Author: sjwoodr@yahoo.com (Steve Woodruff); Date: Fri, 8 Nov 2002 18:56:58 -0800 (PST); I now have all mode ptt via cw line RTS. However... its not working. When i play SSB messages it is not triggering the rig's PTT line. I am connecting to the same port that my footswitch normally con; /archives//html/WriteLog/2002-11/msg00195.html (7,965 bytes)
2. [WriteLog] ptt line resistance? (score: 1): Author: gbaron@charter.net (Gil Baron); Date: Fri, 8 Nov 2002 21:16:14 -0600; Be sure the diode is not in the wrong direction. You did not give enough information to really understand your circuit. Perhaps a text based drawing would help. I use no diodes, just a 4.7 k or so t; /archives//html/WriteLog/2002-11/msg00197.html (9,708 bytes)
3. [WriteLog] ptt line resistance? (score: 1): Author: sjwoodr@yahoo.com (Steve Woodruff); Date: Fri, 8 Nov 2002 19:25:40 -0800 (PST); Ok, i'm attempting to attach a JPG of my circuit. Hopefully the reflector doesn't strip out attachments automatically. :) Its actually a NPN 2n2222 transistor that i'm using. See attached diagram. Yo; /archives//html/WriteLog/2002-11/msg00198.html (11,172 bytes)
4. [WriteLog] ptt line resistance? (score: 1): Author: sjwoodr@dls.net (Steve Woodruff); Date: Fri, 8 Nov 2002 21:33:49 -0600; Ok since the mailing list stripped my diagram out, it can be viewed at my website: http://home.xnet.com/~sjwoodr/ham/cw_ptt.jpg tnx /steve n9oh; /archives//html/WriteLog/2002-11/msg00200.html (12,683 bytes)
5. [WriteLog] ptt line resistance? (score: 1): Author: sjwoodr@yahoo.com (Steve Woodruff); Date: Fri, 8 Nov 2002 20:04:56 -0800 (PST); Joe, THANK YOU! You were right. I dumped the diodes and extra resistor, and changed the RTS resistor to a 1k ohm and its keying bueatifully. Exactly the type of help I was looking for... and an expla; /archives//html/WriteLog/2002-11/msg00201.html (8,438 bytes)
6. [WriteLog] ptt line resistance? (score: 1): Author: gbaron@charter.net (Gil Baron); Date: Sat, 9 Nov 2002 05:59:08 -0600; Sorry, meant npn. The circuit looks fine to me. I do not understand why it would not work. If the CW keying works then so should the PTT. Do you get a good + voltage at the input when you key? If so; /archives//html/WriteLog/2002-11/msg00202.html (12,721 bytes)
7. [WriteLog] ptt line resistance? (score: 1): Author: hamcat@directvinternet.com (K4SB); Date: Sat, 09 Nov 2002 17:32:15 +0000; Probably just a typpo on the "PNP", but you cannot use RTS on a NPN circuit. RTS is normally about -12 v at idle while DTR is the opposite. RTS of course, will go to +12 when keyed which will cause; /archives//html/WriteLog/2002-11/msg00207.html (7,676 bytes)
8. [WriteLog] ptt line resistance? (score: 1): Author: hamcat@directvinternet.com (K4SB); Date: Sat, 09 Nov 2002 18:22:14 +0000; No, I didn't write that This what I wrote, and I see 2 typos. Should have been "cannot use RTS on a PNP" ):< Ed; /archives//html/WriteLog/2002-11/msg00208.html (7,651 bytes)
9. [WriteLog] ptt line resistance? (score: 1): Author: gbaron@charter.net (Gil Baron); Date: Sat, 9 Nov 2002 14:45:58 -0600; RTS AND DTR are not opposite. All RS232 Lines are the same polarity when asserted.; /archives//html/WriteLog/2002-11/msg00209.html (8,560 bytes)

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