Fw: [TenTecEagle] keying with bug
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I USE VIBROPLEX BUGS ON A OF MY TEN-TEC RADIOS, FYI, 73, LLOYD N2KPC? ----- Forwarded Message ----- From: Mike Congleton KD9CK via groups.io <kd9ck@...> Sent: Sunday, May 4, 2025 at 08:06:23 AM EDT Subject: Re: [TenTecEagle] keying with bug Hi Gary, I was told by Paul Clinton in 2012 when I got the Eagle, that the reason for the flaky operation while using a bug was due to the way the key jack was designed. It was designed to auto detect the type of plug inserted in the jack - stereo or mono, and set the radio accordingly. He said the auto detection was done using a couple diodes - this caused a voltage drop in an already low voltage keying circuit. He told me he argued with the engineers about tis design, but we can see who won that argument. I got around it by building a single transistor switch to use in the key line from the bug. I was then able to use the key jack, and it worked great. You can also get around it by using the ACC1 jack on the back of the radio using pins 2 and 3. I used this method when I owned an Omni 7 - worked just fine. BTW - I still use the same single transistor switch in the TS-890 here - it doesn't like a bug either. MIke KD9CK
On Saturday, May 3, 2025 at 09:04:23 PM CDT, Bob McGraw - K4TAX <rmcgraw@...> wrote:
Yep, I observed the same thing.? I also found the dit contact bounce created double elements.? I modified one of my bugs by dampening the U shaped contact spring with a small piece of foam material.? In the end and for that reason, I use a KENT paddle on both my Eagle and my Elecraft K3S.? Although the IC-7610 was released in 2019, the Eagle was released 10 years earlier in 2009,? I guess technology improves with time. 73 Bob, K4TAX -- 73, Lloyd N2KPC TEN-TEC Amateur Radio Net Manager. |
Lloyd T. Price-N2KPC