+++++++++++++++++ From: "Joe Malloy" To: "Raven, Timothy" , Subject: RE: [Elecraft] KAT2 ANT2 Date: Fri, 22 Feb 2002 06:49:09 -0500 Hi, Tim, I think it's safe to say that the K2 can handle such a mistake (i.e., loading into nothing) and I'm proof of that. I occasionally hit the button and select ANT2 when what I want to do is to tune it on ANT1. Of course, the sudden drop of background noise will alert me to that fact, but not before I try to tune up nothing. It's a miniscule problem at best, though I would expect to see Elecraft try to ameliorate the problem by allowing the user to disable ANT2 in a future firmware update now that you've asked. Take care! 73, Joe, W2RBA > -----Original Message----- > From: elecraft-admin at mailman.qth.net > [mailto:elecraft-admin at mailman.qth.net]On Behalf Of Raven, Timothy > Sent: Friday, February 22, 2002 3:12 AM > To: 'elecraft at mailman.qth.net' > Subject: [Elecraft] KAT2 ANT2 > > > Hi there, > > Has anyone found a way to disable the ANT2 switch. The reason I > ask is that > I only have one antenna connected to my K2, and recon at some time I will > hit the tune button with a short and then a longer press, thereby > trying to > match the rig into thin air on ANT2. The only other alternative I > have found > would be to permanently install a dummy load on ANT2 socket. Or can the K2 > handle such mistakes ??? > > 73 Tim G4ARI K2 #2274 ++++++++++++++++++ Date: Fri, 22 Feb 2002 11:12:48 +0100 From: "Ingo, DK3RED" To: Elecraft Subject: [Elecraft] Re: KAT2 ANT2 Hello Tim, > Has anyone found a way to disable the ANT2 switch. ... No. My K2 (output 5W) can handle such mistakes. I had tested it. ;o)) But now I put a simple dummy load (3 resistores with 150 ohms) to the second antenna socket. +++++++++++++++++++ From: "Heyder, Norbert" To: Elecraft Reflector Date: Fri, 22 Feb 2002 13:50:01 +0100 Subject: [Elecraft] RE: KAT2 ANT2 Tim, I simply bridged the two ANT connectors with a suited BNC rig at the back (outside the K2), such the one and only feedline splits into both ANT connectors while only one is selected at a time. Thus it makes no difference to me which ANT inp is currently selected: the antenna is always connected! This makes more sense than receiving no signals from an unintentionelly selected ANT input connected to a dummyload, which could take a while until you notice it. 72 de Bert, DL8BDF K2 #433 ++++++++++++++++++ Date: 22 Feb 2002 07:10:15 -0800 From: "Jim and Kate" To: Elecraft at mailman.qth.net Subject: [Elecraft] ANT 2 Tuning up in the Antenna 2 position is a real possibility. Some nice person on this reflector offered to send me, and I accepted, a little dummy load that attaches to the Ant2 outlet. So, even if I do, tune up in this mode, there is no melt down. 73, Jim K7JIH K2 #1302 ++++++++++++++++++ Date: Fri, 22 Feb 2002 09:01:53 -1000 From: John Buck To: "Raven, Timothy" Cc: "'elecraft at mailman.qth.net'" Subject: Re: [Elecraft] KAT2 ANT2 Can the K2 handle tuning into an open antenna? I do not know if this procedure is within the design specification. The power is automatically reduced for tuning. But my K2 as survived doing this quite a few times. It may give a high current warning. If so stop tuning and figure it out. It is probably not good for the relay contacts if nothing else. I recommend the use of a dummy load. Aloha, John KH7T ++++++++++++++++++++ Reply-To: "Don Wilhelm" From: "Don Wilhelm" To: "Jim and Kate" , Subject: Re: [Elecraft] ANT 2 Date: Fri, 22 Feb 2002 14:57:05 -0500 Folks, Since the version 2.xx firmware reduces the power during tune - the problem could be solved easily by getting one of the BNC 50 ohm terminators commonly used for LAN (10Base2) cabling. Go to one of the computer stores that stock networking hardware and they will likely have the terminators. If not, look at www.JDR.com for 'BNC-TERM-50' - they are 1.29 each in the catalog I am looking at. These terminators are not high wattage dummy loads, but I have used them at the 5 watt level for short periods of time with no adverse effects. 73, Don Wilhelm - Wake Forest, NC W3FPR home page: http://www.qsl.net/w3fpr/ QRP-L # 485 K2 SN 0020 mailto: w3fpr at arrl.net ++++++++++++++++++++