Comments on: Simple Keyers http://kb6nu.com/OLD378/ My personal adventures in amateur radio Fri, 21 Nov 2008 13:17:10 +0000 http://wordpress.org/?v=2.6.2 By: AA1LL http://kb6nu.com/OLD378/#comment-1559 AA1LL Mon, 13 Mar 2006 22:23:16 +0000 #comment-1559 I built the N1HFX keyer and it works really well. I have not built the other two. These circuits give you an exact 2:1 dash/dot rate but there is another class of REALLY simple keyers that use relays and have adjustable ratios. I have found and built a few of them but they suffer from having very heavy characters, i.e., the dit-to-space ratio is much greater than unity (probably due to the relay being the space determining component and no control over it). If anybody knows of a better REALLY simple circuit please pass it on, thanks. I will post my 3MEG (zipped) collection of simple keyers to http://www.qsl.net/aa1ll as soon as qsl.net is back up. 73, Paul, AA1LL Mason, NH I built the N1HFX keyer and it works really well. I have not built the other two. These circuits give you an exact 2:1 dash/dot rate but there is another class of REALLY simple keyers that use relays and have adjustable ratios. I have found and built a few of them but they suffer from having very heavy characters, i.e., the dit-to-space ratio is much greater than unity (probably due to the relay being the space determining component and no control over it). If anybody knows of a better REALLY simple circuit please pass it on, thanks. I will post my 3MEG (zipped) collection of simple keyers to http://www.qsl.net/aa1ll as soon as qsl.net is back up.

73, Paul, AA1LL
Mason, NH

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