Re: [Elecraft] OT: Decoding high speed CW

On 3/30/2016 3:18 PM, Fred Jensen wrote: > I'd appreciate actually knowing if groups were part of the exam since I > can't trust my memory. Yes, and a little-known secret that can be revealed now was that some of the groups were mirror-images of each other! 73 de K2ASP - Phil Kane Elecraft

Re: [Elecraft] OT: Decoding high speed CW

I remember the FCC engineer administering the test consisting of plain text code for my Extra class CW test, and some of the words were not spelled normally to see if we really copied each letter. I do not remember a code test for the commercial license, but maybe credit was given for an

Re: [Elecraft] OT: Decoding high speed CW

Folks - we are flooding the reflector with the posts on this OT thread. Let's take it off-list and close the thread at this time 73, Eric /elecraft.com/ On 3/30/2016 4:29 PM, Ron D'Eau Claire wrote: People seem to be confusing US Ham and Commercial license exams. Fred is right, the

Re: [Elecraft] OT: Decoding high speed CW

People seem to be confusing US Ham and Commercial license exams. Fred is right, the COMMERICAL RadioTelegraph license back then had code groups was well as plain text according to my memory and ex-FCC man Phil's (K2ASP) comments. I believe Phil said the code groups were 16 wpm while the

Re: [Elecraft] Lost Audio Codec -

Jim, Look in Device Manager and you should see an added soundcard if all in the 'computer world' is good. If it does not appear, or it appears with an exclamation mark, you might try right clicking, select properties and click Update Driver. 73, Don W3FPR On 3/30/2016 12:04 PM, Jim Wheeler

Re: [Elecraft] OT: Decoding high speed CW

I took four exams from 1948(Class C) given by W5CEO through 1952 at the FCC Office in Dallas(Extra). None of these were code groups. 73  Don  K5AQ On Wednesday, March 30, 2016 5:18 PM, Fred Jensen wrote: Just for my own edification, were code groups ever part of

Re: [Elecraft] OT: Decoding high speed CW

Just for my own edification, were code groups ever part of the commercial exams? It's been nearly a lifetime, but I sat for the 2nd Telegraph in 1956 [I was almost 16], and I vaguely think I remember two parts to the code element -- plain text and groups. I also very vaguely think I remember

Re: [Elecraft] KPA3 pin question

Most likely an "indexing" feature to insure proper connector alignment. Sent from my iPhone ...nr4c. bill > On Mar 30, 2016, at 5:14 PM, "kev...@coho.net" wrote: > > I have successfully removed the KPA3 module and find one pin missing. On > P68A pin # 6 is broken or cut

Re: [Elecraft] Operating temperature range ( second attempt)

Silica gel crystals will also work well when placed in a case along with the radio. I kept my cameras and film alive in Borneo with silica gel in a Pelican case. 73 Bill AE6JV On 3/30/16 at 2:33 PM, r...@cobi.biz (Ron D'Eau Claire) wrote: The space inside a KX3 is very limited, but you

Re: [Elecraft] Operating temperature range ( second attempt)

The space inside a KX3 is very limited, but you might consider some dessicant to absorb the moisture when carrying the rig outdoors. It's silica crystals and readily available from many stores including Walmart and gun dealers (those folks like to keep their weapons dry and rust free when

Re: [Elecraft] KPA3 pin question

Never mind. The schematic says nothing is connected to pin 5 or 6. Kevin. On 3/30/2016 2:14 PM, kev...@coho.net wrote: I have successfully removed the KPA3 module and find one pin missing. On P68A pin # 6 is broken or cut flush with the header. The corresponding socket opening seems to

[Elecraft] KPA3 pin question

I have successfully removed the KPA3 module and find one pin missing. On P68A pin # 6 is broken or cut flush with the header. The corresponding socket opening seems to be filled with a plug. Since I am not seeing any broken pin in the socket I think this is the way it was designed. But as

Re: [Elecraft] OT: Decoding high speed CW

Oops, my apologies: one of those was me, my excuse will have to be that it was in 1973 and I guess those memories are no longer what they used to be! I probably mixed that up with my code practice tapes, which definitely did have 4 letter code group parts 73, LS W5QD Mike Morrow-3 wrote >>

Re: [Elecraft] OT: Decoding high speed CW

I wrote: >> I passed the Second Class exam almost 40 years ago, but my old study >> books for the exam indicate that the tests listed above were in place >> even before WWII. AFAIK, the only change occurred in the early 1990s >> when the FCC began giving credit for all of the above if the >>

Re: [Elecraft] Operating temperature range ( second attempt)

Hi Igor, Although I haven't experienced your low temperatures I did get condensation in the VFO encoder. The rig worked but only tuned for part of the turn of the knob. It took about an hour to clear up once I started to warm it up. 73 Andrew G8BYB -Original Message- From: Elecraft

Re: [Elecraft] Operating temperature range ( second attempt)

On Wed, Mar 30, 2016 at 5:45 PM, John K7JLT wrote: > . I ran the radio up to 110F, 43C (radio out in the sun). > > > REALLY? My KX3 went belly up at 80F in the sun. The black case does NOT like the sun. Barry N1EU

Re: [Elecraft] OT: Decoding high speed CW

On 3/29/2016 6:51 PM, Mike Morrow wrote: > I passed the Second Class exam almost 40 years ago, but my old study > books for the exam indicate that the tests listed above were in place > even before WWII. AFAIK, the only change occurred in the early 1990s > when the FCC began giving credit for

Re: [Elecraft] [K3] Tokyo Hy-Power HL-1.2KFX amp interfacing (to ALC or not to ALC?)

Read: http://www.comportco.com/~w5alt/cw/cwindex.php?pg=5 "CW Bandwidth" by W5ALT seems everyone in this debate has some valid points. I found this by searching on "CW bandwidth". 73, Ed - KL7UW http://www.kl7uw.com "Kits made by KL7UW" Dubus Mag business: dubus...@gmail.com

Re: [Elecraft] Operating temperature range ( second attempt)

When I did the temp compensation the radio had cold soaked over night. The only problem that I remember was a slow display. I ran the radio up to 110F, 43C (radio out in the sun). John K7JLT Igor Sokolov wrote: >Thanks Jerry. +8F (-13 C) is the lowest mentioned here so far

Re: [Elecraft] Operating temperature range ( second attempt)

Thanks Jerry. +8F (-13 C) is the lowest mentioned here so far for KX3. I will have to wait till next winter to try temperatures lower then that. Now it only gets down to minus 8C in the night and day temperatures are all above freezing. 73, Igor UA9CDC - Original Message - From:

Re: [Elecraft] Operating temperature range ( second attempt)

The coldest I've operated is probably about 20F (-7C). I've never seen any cold related issues with the KX3. 73, Barry N1EU On Wed, Mar 30, 2016 at 12:38 PM, Igor Sokolov wrote: > Barry, what was the lowest temperature you have used your KX3 without > noticeable

Re: [Elecraft] Operating temperature range ( second attempt)

Thank you Dick. Condensation inside the rig is a known problem. I will sure take care not to switch it on before it is dried out inside. - Original Message - From: "Richard Fjeld" To: Sent: Wednesday, March 30, 2016 8:26 PM Subject:

Re: [Elecraft] Operating temperature range ( second attempt)

Barry, what was the lowest temperature you have used your KX3 without noticeable deterioration of performance? 73, Igor UA9CDC - Original Message - From: "Barry N1EU" To: "Elecraft Reflector Reflector" Sent: Wednesday, March 30, 2016

Re: [Elecraft] Operating temperature range ( second attempt)

I have operated my K1 (after cap modification by Elecraft) & KX1 at - 40 C & F with only my fingers suffering from the cold. When I did temp compensation on my KX3 I took it down to -10 C. I know KL7EDK in Fairbanks AK may operate on the Yukon Quest with a KX3 which gets very very cold. John

[Elecraft] Lost Audio Codec -

K3 – USB connected to PC – can run terminal psk /rtty but don’t see audio codec options in other software like Fldigi. Have tried disconnecting usb and rebooting and reconnecting. Doesn’t seem to install a codec? Any help would be appreciated. Jim Ka0eze Sent from Mail for Windows 10

Re: [Elecraft] [K3] Tokyo Hy-Power HL-1.2KFX amp interfacing (to ALC or not to ALC?)

Thread has been ended. Eric Moderator /elecraft.com/ On 3/30/2016 9:01 AM, Jim Brown wrote: Guy has it exactly right. 73, Jim K9YC On Wed,3/30/2016 8:18 AM, Guy Olinger K2AV wrote: If the rise and fall data curves used for "keying" vary their "sharpness" according to speed, then the

Re: [Elecraft] [K3] Tokyo Hy-Power HL-1.2KFX amp interfacing (to ALC or not to ALC?)

Guy has it exactly right. 73, Jim K9YC On Wed,3/30/2016 8:18 AM, Guy Olinger K2AV wrote: If the rise and fall data curves used for "keying" vary their "sharpness" according to speed, then the description bandwidth increases by speed certainly does apply. But if not, the bandwidth is governed

Re: [Elecraft] Battery requirements for NPOTA activation with KX3/KXPA100

Having recently done several NPOTA activations I'll share my experience. I have a non-Elecraft radio permanently mounted in my truck (my nice K3 station stays home), run about 100 watts into a typical screwdriver antenna. I ran off the single battery in my truck, which is good for about 50 to

Re: [Elecraft] [K3] CW Speed & bandwidth (was Tokyo Hy-Power HL-1.2KFX amp interfacing (to ALC or not to ALC?))

Folks, let's also end this thread. 73, Eric Moderator for life. /elecraft.com/ On 3/30/2016 8:38 AM, Nr4c wrote: Yes, indeed it was the "Lady Lex". Sent from my iPhone ...nr4c. bill __ Elecraft mailing list Home:

Re: [Elecraft] [K3] CW Speed & bandwidth (was Tokyo Hy-Power HL-1.2KFX amp interfacing (to ALC or not to ALC?))

Yes, indeed it was the "Lady Lex". Sent from my iPhone ...nr4c. bill > On Mar 30, 2016, at 8:34 AM, Jim Finan wrote: > > I believe that was the 'Lexington' > > Jim Finan > AB4AC > Sent from my BlackBerry 10 smartphone. > Original Message > From: kev...@coho.net >

Re: [Elecraft] [K3] Tokyo Hy-Power HL-1.2KFX amp interfacing (to ALC or not to ALC?)

Let's end this thread at this time in the interest of relieving other readers from overload. If you feel compelled to continue the CW b/w discussion, please take it to private email. 73, Eric /elecraft.com/ On 3/30/2016 8:18 AM, Guy Olinger K2AV wrote: One could discourse all day on what

Re: [Elecraft] Operating temperature range ( second attempt)

Hi Igor, I live in Minnesota and our temps get down similar to yours. I have not tried my K3 in those temps, but I have had mobile rigs in early days of solid state and when first turned on, nothing would happen for a few minutes until they warmed up. Newer circuit designs may have changed

Re: [Elecraft] Operating temperature range ( second attempt)

No, many of SOTA activators have used a KX3 below freezing. We just haven't used one at -30C (-22F) like you originally mentioned. 73, Barry N1EU On Wed, Mar 30, 2016 at 11:02 AM, Igor Sokolov wrote: > Thanks Brendon,Bob and Kevin. I am not worried about batteries. My

Re: [Elecraft] [K3] Tokyo Hy-Power HL-1.2KFX amp interfacing (to ALC or not to ALC?)

One could discourse all day on what "proper" is in this context without ever a precise consensus among educated gentlemen. At some point of "ugly" we would all agree that anything that sounds like that is improper. When the only stateful levels were strictly on and off, and the rise and fall

Re: [Elecraft] [K3] Tokyo Hy-Power HL-1.2KFX amp interfacing (to ALC or not to ALC?)

IMHO CW can be seen as 100% AM modulation which will have 2 sidebands. Therefore the bandwidth will be dependant on speed or baud rate as well as shape of the wave form. 73, Igor UA9CDC - Original Message - From: "Jim Brown" To:

Re: [Elecraft] Operating temperature range ( second attempt)

Thanks Brendon,Bob and Kevin. I am not worried about batteries. My LiFePo4 were tested at minus 20 C and the drop in capacity is insignificant. Looks like nobody tested K3 or KX3 at below freezing temperatures so I will have to be the first :) A bit scary... 73, Igor UA9CDC - Original

Re: [Elecraft] Operating temperature range ( second attempt)

Hi Igor, I think that some have operated at low temperatures in some winter competitions -- the US North East gets pretty darn cold -- similar to what you are talking about. I looked and easily found similar questions to yours, but no answers! The two things I'd be concerned about are the

Re: [Elecraft] [K3] CW Speed & bandwidth (was Tokyo Hy-Power HL-1.2KFX amp interfacing (to ALC or not to ALC?))

The Enterprise referred to was under the command of James T. Kirk. 73, Charlie k3ICH -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Finan Sent: Wednesday, March 30, 2016 8:35 AM To: kev...@coho.net; elecraft@mailman.qth.net Subject: Re:

Re: [Elecraft] [K3] CW Speed & bandwidth (was Tokyo Hy-Power HL-1.2KFX amp interfacing (to ALC or not to ALC?))

I believe that was the 'Lexington' Jim Finan AB4AC Sent from my BlackBerry 10 smartphone.   Original Message   From: kev...@coho.net Sent: Tuesday, March 29, 2016 10:03 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] [K3] CW Speed & bandwidth (was Tokyo Hy-Power HL-1.2KFX amp

Re: [Elecraft] [K3] Tokyo Hy-Power HL-1.2KFX amp interfacing (to ALC or not to ALC?)

On 3/30/2016 12:21 AM, Jim Brown wrote: > Unfortunately the guys who wrote the rules failed to understand the > physics and the math. No Jim, you are wrong here. CW is a carrier modulated by a digital (on/off keyed) signal of a given (baud) rate. That keying will generate sidebands +/- the

Re: [Elecraft] IC-7300 video - things to come

Wow, a touch screen. Wow? Come on, it's just an interface between man and machine. Just some ( and I mean /some/) thoughts: A touch screen can be a cheap set of programmable buttons. Could be nice for a user and maybe a cost reduction for the manufacturer. Nothing special and I'm not

Re: [Elecraft] IC-7300 video - things to come

Hi all. I have nothing against touch screen, out of the fact that sometimes is ... touchy. The responsiveness of the virtual buttons should be much more the the one of physical buttons or, too old to die, command lines. Touch screen need to give you a faster and accurate response even if the

Re: [Elecraft] [K3] CW Speed & bandwidth (was Tokyo Hy-Power HL-1.2KFX amp interfacing (to ALC or not to ALC?))

But even if the RX bandwidth is wide enough that there is negligible distortion, you can't distinguish dits that are 5 ms long if the rise time is 2 ms. 73, Vic, 4X6GP/K2VCO Rehovot, Israel http://www.qsl.net/k2vco/ On 30 Mar 2016 07:17, Jim Brown wrote: On Tue,3/29/2016 1:03 PM, Vic

Re: [Elecraft] IC-7300 video - things to come

Re:   "I may have missed something in this discussion but I question what is different from using a touch screen or the buttons on the radio as we have now?" On screen buttons activate as soon as it is touched.  Hardware buttons allow the finger to touch the button and give the brain an instant