Re: [Elecraft] KAT 500 Loses Match

2024-01-14 Thread Ken WA8JXM
David, True but IIRC I was replying to a message where he said the SWR was flat through 6m.  Usually, somewhere between 20m and 6m, receive losses do count. Ken WA8JXM On 1/14/2024 4:33 PM, David Woolley wrote: The receive part of the penalty, from a lossy antenna, only applies

Re: [Elecraft] KAT 500 Loses Match

2024-01-13 Thread Ken WA8JXM
considered that an acceptable design.   Remember, antenna losses affect TX and  RX, so that's 6 db system loss. Ken WA8JXM On 1/13/2024 2:37 PM, Walter Underwood wrote: The C HA-50HD is rated for 250 W SSB or 75 W for digital modes. It gets a flat SWR with resistive losses in the transformer

Re: [Elecraft] KAT 500 Loses Match

2024-01-12 Thread Ken WA8JXM
Your situation sounds like 1) something is heating up and changing value or 2) something is arcing and changing value.  Are you using a balun or choke that is underrated? Ken WA8JXM On 1/13/2024 12:28 AM, Michael Reynolds, NO6O wrote: Greetings, I joined this list today, after sending

Re: [Elecraft] KAT 500 Loses Match

2024-01-12 Thread Ken WA8JXM
with the K4 directly, does the SWR meter stay steady, or does it fluctuate at full power? Ken WA8JXM Why is the amplifier connected?  30m is a restricted powerband. On 1/12/2024 4:46 PM, Paul Ecker wrote: I am experiencing a new problem for me, with my KAT 500. So far I've noticed this issue

Re: [Elecraft] Headset Hubbub

2023-10-12 Thread Ken WA8JXM
#1, contact Amazon customer service and inform them what you reported here. Some years ago I had a similar situation with a Baofeng handheld, it came with frequencies programmed in it. Amazon was not happy and immediately issued a refund. Years ago I bought the CM-500 and a Logitech gaming

Re: [Elecraft] Digital mode power handling for KAT3

2023-10-11 Thread Ken WA8JXM
Not just the tuner, the K3 is not rated for full power on 100% duty cycle modes. Just like it's not rated or 100% key down CW. But realize that many of the modes are half transmit and half listen. Different digital modes have different duty cycles. From the W1HKJ.com website: 100% duty cycle:

Re: [Elecraft] KAT 500 Antenna Selection Problems

2023-08-04 Thread Ken WA8JXM
additional code, DXLab already has that functionality ,On the PORTS setup, there is a secondary serial port that you can direct to the KAT500 \ Ken WA8JXM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http

Re: [Elecraft] KAT 500 Antenna Selection Problems

2023-08-03 Thread Ken WA8JXM
I have had that problem in the past. Have you tried a 'reset configuration"? On Thu, Aug 3, 2023 at 12:44 PM Paul Ecker wrote: > In the KAT 500 Utility – Configuration- Antennas- Band- 17M; > > I have Antenna 3 checked as Enabled and Antenna 3 as Preferred. No other > antennas are selected

Re: [Elecraft] A dumb question about lightning

2023-07-31 Thread Ken WA8JXM
obably time to turn in my license and sell the equipment. (My Novice license was issued 60 years ago.) Solutions have to be practical. Quitting the hobby is the only practical solution I see. 73, Ken WA8JXM On Mon, Jul 31, 2023 at 10:57 AM Geoffrey Feldman wrote: > > > First thing

Re: [Elecraft] [OT] A dumb question about lightning

2023-07-29 Thread Ken WA8JXM
days" of vacuum tube rigs when I operated during thunderstorms ;-) Ken WA8JXM On Fri, Jul 28, 2023 at 7:31 PM Ray Maxfield wrote: > I worked a Number of Years as a Broadcast Engineer. > The Broadcast Industry has Put this one to bed years ago. > No Need to re-invent the Wheel. Yes

Re: [Elecraft] switchbox KX3 to signalink/mike+headphones

2022-07-24 Thread Ken WA8JXM
I tried the toggle switch to switch mic/headset between two rigs. Too much hum pickup on the mic. Gave up,and went to two headsets. YMMV Ken WA8JXM On Sat, Jul 23, 2022 at 9:35 PM Brian Hunt wrote: > Pretty simple home brew project, I would think. Four stereo jacks, a DPDT > switch, a

Re: [Elecraft] KAT-500 Issue!

2022-05-20 Thread Ken WA8JXM
What is the setting for 10m in the KAT500 utility? The behavior you see is consistent with 10m being set for ANT2. Hopefully it is that simple! GL Ken WA8JXM > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/li

Re: [Elecraft] ARRL Antenna Book (and other antenna books)

2022-05-12 Thread Ken WA8JXM
ok are my go to references, always within reach. (the binding on my '61 Handbook has fallen apart from use, but the pieces are still on the bookshelf. Ken WA8JXM On Thu, May 12, 2022 at 8:15 AM Rick Robinson wrote: > I used an online question site for my Extra Class study years ago and this >

Re: [Elecraft] PayPal holding payment. (Follow up)

2022-05-08 Thread Ken WA8JXM
FWIW, my wife had very good results from Paypal. She bought a saddle online and paid with paypal. When it arrived, it did not match the description or photos. The seller ignored her protests so she contacted PP. She reasonably quickly got a human, explained the situation and sent pictures.

Re: [Elecraft] KAT500 drops out during voice peaks

2022-02-03 Thread Ken WA8JXM
Something arcing over on voice peaks would do what you describe. Are there any weak insulators or spots where something might arc? Ken WA8JXM On Thu, Feb 3, 2022 at 7:45 PM David F. Reed wrote: > It might help if we knew more about the antenna system; what antenna, > balun, power

Re: [Elecraft] Seeking input on 3rd-party microphones used with our transceivers

2022-01-31 Thread Ken WA8JXM
A mic, what's that? LOL When I have operated phone, I either use my old Shure 444, or, for a headset/boom mic, a Koss SB-45 (comfortable and $50). I receive great audio reports from either of them. Ken WA8JXM On Mon, Jan 31, 2022 at 10:12 PM Wilson Lamb via Elecraft < elecraft@mailman.qth.

Re: [Elecraft] “ELECRAFT NVIS field day”

2021-12-17 Thread Ken WA8JXM
ropagation modes. Ken WA8JXM On Fri, Dec 17, 2021 at 7:22 PM David Herring wrote: > It is absolutely true that antennas intended for NVIS use do not have to > be hung low. But they CAN be. And there are instances where doing so can > be desirable. > > When I lived in Hawaii,

Re: [Elecraft] OT: High school drafting class, ~1975

2021-04-24 Thread Ken WA8JXM
the identical mirror images. Printing was erased and redone in readable form. Ken WA8JXM On Sat, Apr 24, 2021 at 2:05 PM Dave Fugleberg wrote: > Thanks for the memories Wayne! My High School drafting class was just a > couple of years after yours, and I remember it fondly. Everythi

Re: [Elecraft] Matching resonant antennas

2020-07-16 Thread Ken WA8JXM
a 1.4:1 SWR is the absolute best? Ken WA8JXM On Thu, Jul 16, 2020 at 6:52 PM John Magliacane via Elecraft < elecraft@mailman.qth.net> wrote: > On 15/07/2020 20:30, Ken WA8JXM wrote: > > > Conversely, a non-resonant antenna can have a 1:1 SWR. > > On Thursday, July 1

Re: [Elecraft] Matching resonant antennas

2020-07-15 Thread Ken WA8JXM
Yes, a resonant half wave dipole can have a feedpoint impedance of 5 ohms to 90 ohms (SWR 10:1 to 1.8:1), but it's still resonant. Conversely, a non-resonant antenna can have a 1:1 SWR. Ken WA8JXM On Wed, Jul 15, 2020 at 12:34 PM Andy Durbin wrote: > "A correspondent asked me why

Re: [Elecraft] Difference in dummy loads

2020-07-01 Thread Ken WA8JXM
The difference between a "dry" and an "air cooled"? I think they are the same. The difference is with "oil cooled". Heathkit used to sell a "Cantenna" which was a dummy load in a gallon paint can. Add your own transformer oil. IIRC it was rated for a KW