[Elecraft] test

[Jonathan Reed]

Test please ignore

Jonathan M0JDR

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[Elecraft] Test

[Jonathan Reed]

Sorry testing again.

Jonathan M0JDR

Sent from Mail for Windows 10

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[Elecraft] Boxes of tubes? What todo?

[kt5te]

I know this is unusual for the list, but I was hoping someone could send me in 
the right direction.  

In the attic of a house that was being refurbished for a office I found boxes 
full 
of tubes and other stuff from the 40s & 50s.   I hated to pitch these items and 
figured somebody might want them, so brought it all home. :-)  The house has 
been empty for years, but I did find a newspaper clipping and a QSO card from 
the 50s for Maj. Cantrell.  He was called "Misawa's Iron Jaw".   I bet you can 
guess his MOS?

What do I do...?

-- 
73, William KT5TE
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Re: [Elecraft] Boxes of tubes? What todo?

[Mark Musick]

William
There is a distributor for antique tubes and other antique radio equipment that 
advertises in QST that would probably be willing to take it off your hands.
Look under Antique/vintage/Classic advertising in the back of QST.

73,
Mark, WB9CIF

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of kt...@watershipfarm.com
Sent: Thursday, April 30, 2020 11:56
To: elecraft@mailman.qth.net
Subject: [Elecraft] Boxes of tubes? What todo?

I know this is unusual for the list, but I was hoping someone could send me in 
the right direction.  

In the attic of a house that was being refurbished for a office I found boxes 
full 
of tubes and other stuff from the 40s & 50s.   I hated to pitch these items and 
figured somebody might want them, so brought it all home. :-)  The house has 
been empty for years, but I did find a newspaper clipping and a QSO card from 
the 50s for Maj. Cantrell.  He was called "Misawa's Iron Jaw".   I bet you can 
guess his MOS?

What do I do...?

--
73, William KT5TE
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delivered to markmus...@outlook.com 
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Re: [Elecraft] Elecraft Digest, Vol 192, Issue 43

[Tommy Judson via Elecraft]

Ok, joined this group even though I don’t own an Elecraft radio - yet.  I’m 
wanting an Elecraft Elmer to help me understand which rig could be “the one”.  
What say someone please? Tommy

> On Apr 29, 2020, at 10:44 PM, elecraft-requ...@mailman.qth.net wrote:
> 
> Send Elecraft mailing list submissions to
>   elecraft@mailman.qth.net
> 
> To subscribe or unsubscribe via the World Wide Web, visit
>   http://mailman.qth.net/mailman/listinfo/elecraft
> or, via email, send a message with subject or body 'help' to
>   elecraft-requ...@mailman.qth.net
> 
> You can reach the person managing the list at
>   elecraft-ow...@mailman.qth.net
> 
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Elecraft digest..."
> 
> 
> Today's Topics:
> 
>   1. Re: Elecraft] OT: The Colpitts mystery (Dave Fugleberg)
>   2. Re: Mail for Windows 10 (Jim Brown)
>   3. KX3 Firmware (Ray Soifer)
>   4. Evening Net Announcement & Invitation (kevinr)
>   5. Re: OT: The Colpitts mystery (Roger D Johnson)
>   6. Re: Elecraft Digest, Vol 192, Issue 42 (Martin)
>   7. Re: Mail for Windows 10 (Phil Kane)
>   8. K3 - Using Mono Phone Jack Adapter in "Key" Port (Brian Deuby)
>   9. Re: Mail for Windows 10 (John Kosko)
>  10. Testing (Bob DeHaney)
>  11. Re: Power Supplies and Voltage drop (Phil Kane)
>  12. Re: Mail for Windows 10 (Lynn W. Taylor, WB6UUT)
>  13. Re: Mail for Windows 10 (Lynn W. Taylor, WB6UUT)
>  14. KX3 internal battery charger normal behavior? (BT * )
>  (Mike Parkes)
>  15. OT: The Colpitts mystery (Doug Faunt N6TQS +1-510-717-1197)
>  16. Evening Net Invitation notes, addenda, and errata (kevinr)
>  17. Re: OT: The Colpitts mystery (Fred Jensen)
>  18. Re: OT: The Colpitts mystery (John Simmons)
>  19. Re: OT: The Colpitts mystery (k7...@aol.com)
>  20. Re: OT: The Colpitts mystery (EricJ)
>  21. Re: OT: The Colpitts mystery (Macy monkeys)
>  22. Re: Mail for Windows 10 (Brian  Denley)
>  23. Re: OT: The Colpitts mystery (Phil Kane)
>  24. Re: OT: The Colpitts mystery (Phil Kane)
>  25. Elecraft Evening Net Report (kevinr)
>  26. Re: OT: The Colpitts mystery (Nr4c)
> 
> 
> --
> 
> Message: 1
> Date: Wed, 29 Apr 2020 11:38:31 -0500
> From: Dave Fugleberg 
> To: Gerry Villhauer 
> Cc: "Elecraft@mailman.qth.net" 
> Subject: Re: [Elecraft] Elecraft] OT: The Colpitts mystery
> Message-ID:
>   
> Content-Type: text/plain; charset="UTF-8"
> 
> Yep, that was the textbook for the Communications class I had in
> electronics school in 1983. One of the requirements to pass the class was
> to pass the General Radiotelephone exam. The FCC Examiner came over from
> the St Paul field office to the technical school to administer the exam to
> the class.
> Shortly after that, I went to the field office and passed the General and
> Advanced  amateur exams...most of the technical portions were nearly
> identical to the General Radiotelephone.
> 
> On Wed, Apr 29, 2020 at 8:35 AM Gerry Villhauer  wrote:
> 
>> The text book of choice for the commercial license test was: Electronic
>> Communications by Shrader. I have a copy, 2nd addition. I used it for
>> passing my 2nd and 1st class commercial test...Now the General Radio
>> Telecommunication License.
>> Gerry, W0GV
>> __
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>> 
> 
> 
> --
> 
> Message: 2
> Date: Wed, 29 Apr 2020 09:41:01 -0700
> From: Jim Brown 
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] Mail for Windows 10
> Message-ID:
>   
> Content-Type: text/plain; charset=utf-8; format=flowed
> 
> On 4/29/2020 5:31 AM, Chuck Chandler wrote:
>> Unless the list is capable of being re-configured (possibly with the '
>> *convert_html_to_plaintext*  ' option?), I would urge some notice be given
>> to users that this list is incompatible with Mail for Windows 10,
> 
> This reflector has been happily operating for 20 years with plain text. 
> I subscribe to about 30 lists, half of which operate with plain text. I 
> suggest that users get with THAT program, rather than suggest that these 
> lists are wrong.
> 
> 73, Jim K9YC
> 
> 
> 
> --
> 
> Message: 3
> Date: Wed, 29 Apr 2020 16:45:03 + (UTC)
> From: Ray Soifer 
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] KX3 Firmware
> Message-ID: <450108723.2267715.1588178703...@mail.yahoo.com>
> Content-Type: text/plain; charset=UTF-8
> 
> Dear Elecraft,
> I'm sure you're getting lots of requests for FT8 but I have a simpler request.
> Would it be possible to add 75 baud RTTY to the KX3 firmware?
> 
> BARTG an

[Elecraft] Which Rig? (was Re: Elecraft Digest, Vol 192, Issue 43)

[Lynn W. Taylor, WB6UUT]

Welcome, Tommy,

Since you use the list in "digest mode" please delete all but the most 
relevant parts of the message, or we get it all again (and it will all 
be repeated in the next digest!)


I'm sure you'll get lots of help, but Amateur Radio is such a diverse 
hobby that you'll get wildly different answers depending on what you like.


For example, the K4 is going to be amazing, but it's the wrong radio if 
you like to go hiking and operate from a major hilltop somewhere.


Ask me about the best CW rig, and I'll just shrug.  Start talking about 
digital modes and I'll have useful comments.


73 -- Lynn, WB6UUT

On 4/30/20 6:22 AM, Tommy Judson via Elecraft wrote:

Ok, joined this group even though I don’t own an Elecraft radio - yet.  I’m 
wanting an Elecraft Elmer to help me understand which rig could be “the one”.  
What say someone please? Tommy

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Re: [Elecraft] Which Rig? (was Re: Elecraft Digest, Vol 192, Issue 43)

[David Herring]

Tommy, Lynn’s right…it would be helpful if you can tell us how you use or plan 
to use a rig.  Lot of helpful folks here so you will get lots of suggestions..l

73, David N5DCH

> On Apr 30, 2020, at 8:19 AM, Lynn W. Taylor, WB6UUT 
>  wrote:
> 
> Welcome, Tommy,
> 
> Since you use the list in "digest mode" please delete all but the most 
> relevant parts of the message, or we get it all again (and it will all be 
> repeated in the next digest!)
> 
> I'm sure you'll get lots of help, but Amateur Radio is such a diverse hobby 
> that you'll get wildly different answers depending on what you like.
> 
> For example, the K4 is going to be amazing, but it's the wrong radio if you 
> like to go hiking and operate from a major hilltop somewhere.
> 
> Ask me about the best CW rig, and I'll just shrug.  Start talking about 
> digital modes and I'll have useful comments.
> 
> 73 -- Lynn, WB6UUT
> 
> On 4/30/20 6:22 AM, Tommy Judson via Elecraft wrote:
>> Ok, joined this group even though I don’t own an Elecraft radio - yet.  I’m 
>> wanting an Elecraft Elmer to help me understand which rig could be “the 
>> one”.  What say someone please? Tommy
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Re: [Elecraft] Boxes of tubes? What todo?

[n6...@outlook.com]

There's still a demand for some electron tubes and just mentioning it on this 
group will get you some attention. There are many other email groups as well as 
ebay, selling services on Facebook, Instagram, and other social media 
platforms, Craigslist, etc. through which you could reach people interested in 
tubes.

Interested persons will undoubtedly like to see a list by tube number so I 
suggest you inventory the tubes and make a list that you can email to others.

Gary, N6LRV


From: elecraft-boun...@mailman.qth.net  on 
behalf of kt...@watershipfarm.com 
Sent: Thursday, April 30, 2020 4:56 AM
To: elecraft@mailman.qth.net 
Subject: [Elecraft] Boxes of tubes? What todo?

I know this is unusual for the list, but I was hoping someone could send me in
the right direction.

In the attic of a house that was being refurbished for a office I found boxes 
full
of tubes and other stuff from the 40s & 50s.   I hated to pitch these items and
figured somebody might want them, so brought it all home. :-)  The house has
been empty for years, but I did find a newspaper clipping and a QSO card from
the 50s for Maj. Cantrell.  He was called "Misawa's Iron Jaw".   I bet you can
guess his MOS?

What do I do...?

--
73, William KT5TE
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Re: [Elecraft] Mail for Windows 10

[Gmail - George]

Works from Windows Live Mail

73
George AI4VZ

-Original Message- 
From: Brian Denley 

Test

Brian  KB1VBF

Sent from Mail for Windows 10



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[Elecraft] K2 WTB KAT100-1

[NJMike]

I’m looking to buy the KAT100-1 antenna tuner for the K2. I believe the -1
model is the slim model that the K2 can sit on top of. I don’t want the -2
model which I think is the enclosure that is the same size as the K2. 

Elecraft has the tuner on back order for 2 weeks AFTER Covid-19 restrictions
are lifted so their back order is somewhat obscure (which I understand).

I will consider both the kit or already assembled. 

Thanks,
Mike NJ2OM 



--
Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] [K3S] intermittent RF path interruption

[Ben Gelb]

I realized that the "Tune" wattage was set high enough to always
switch the PA in, even when the power was dialed down to <12W.

With that corrected, I now see consistent behavior.

When KPA3 gets into "bad" state, I see no power out and hear no signal
on receive. Dialing the power down to <12W results in the "clack" of
the KPA3 bypass relays and immediately restores operation (albeit at
QRP levels). Dialing the power up and down across the 12W mark makes
the receive go in and out (no receive w/ KPA3 inline). Turning power
on and off does not clear the fault - still persists after it comes
back up. It does eventually resolve itself though and operate normally
for a while. But have yet to determine a reliable means to "fix" it on
demand.

But it is clearly a problem in the KPA3 and not the base K3S, since
all is cured once the KPA3 is bypassed.

I have now reproduced this on multiple HF bands as well, so not just a
six meter problem.

I started digging into the schematics. T/R circuit in the KPA3 seems
like the obvious place to start. Though I can't really see how a
single component failure in there would cause what I'm describing (in
particular the "memory" effect that causes the problem to manifest for
a while and then go away).

I probed the 7T and 7R voltages on connector P68A (easily accessible
w/ top lid removed from rig). Looks fine - about 6V on either when in
TX or RX, respectively, and ~0.3V when complemented. Also confirmed 5V
is present on appropriate pins of P68A and 13.8V is present on P68B.

I'd like to probe further on the PA board (while installed, so can see
what is going on), but while there are many exposed vias visible with
the K3S lid off, the silkscreen side is not visible when the module is
installed. So its hard to figure out what to probe. Does anyone have
access to board layout images, or otherwise a guide to what to
probepoints are available on the heatsink side (which faces up when
module installed) of the PCB? If not I suppose next step is to pull
the board out and try to map it out manually when I have a bit more
time, but hoping to save that step.

For reference, schematic of interest is on pg. 46, here:
https://ftp.elecraft.com/K3S/Manuals%20Downloads/E740323%20K3s%20Schematic%20Files.pdf

Thanks,
Ben N1VF

On Thu, Apr 16, 2020 at 11:30 AM Ben Gelb  wrote:
>
> Thanks all for the replies.
>
> - I saw the same issue on ANT 1 as ANT 2.
> - Haven't dug out a dummy load yet... still TODO.
>
> New clue: Dialing the power down to 8W fixes the RX path (can go back and 
> forth across this boundary and hear the RX go in and out, coincident w/ a 
> relay click), but *not* the TX path when in a bad state. So I will still see 
> 0W out when set to low power. Still have to switch to another band and 
> transmit to "unstick" the TX path.
>
> So I take this to mean that:
> - With high power out, both RX and TX path are impacted by the issue.
> - With low power out (<8W, PA clicked out), the problem no longer seems to be 
> in the RX path (but is still in the TX path).
>
> When I have a bit more time will look at the schematics and see if I can 
> reason about what might be happening.. feels like this should narrow it down 
> pretty far. But posting the update in case it spurs any new thoughts.
>
> Ben, N1VF
>
> On Sun, Apr 12, 2020 at 1:03 PM Nr4c  wrote:
>>
>> Well first I’d try with a “dummy” load.
>>
>> The swap antenna to Ant 1.
>>
>> Sent from my iPhone
>> ...nr4c. bill
>>
>>
>> > On Apr 12, 2020, at 3:23 PM, Ben Gelb  wrote:
>> >
>> > A bit of a mystery w/ my K3S and I could use help figuring out what the
>> > problem might be.
>> >
>> > Background: I have had the radio parked on 6m for several weeks (HF antenna
>> > temporarily out of commission) and have left it running (receive) for
>> > extended periods.
>> >
>> > Recently, I have noticed that when I do sit down and try to operate, the
>> > radio will get into a mode where during TX the rig will indicate 0W forward
>> > power during transmit. Following this zero power TX, the RX will also go
>> > quiet. Then seems to stay that way for some time (not clear to me what
>> > makes it clear up... or if it ever does if left alone).
>> >
>> > Some experiments I have done to try to figure out what is wrong:
>> > - Hitting the tune button also shows 0 power (instead of usual 10-15W) when
>> > radio gets stuck in this state.
>> > - Dialing the power down to where I hear the 100W PA switch out of line
>> > (relay click... around 8.0W) seems to immediate restore receive and also
>> > causes the rig to make power again on transmit. But when I turn it back
>> > past 8.0W, it appears to go back right back into the bad state (so suggests
>> > whatever the issue is, is in the 100W PA module).
>> > - Switching to another band and transmitting momentarily (think I tried
>> > 15m) will sometimes knock the radio out of this "bad" mode. But going back
>> > to 6 meters will eventually cause it to happen again. Usually pretty
>> > quickly (several seco

Re: [Elecraft] OT: The Colpitts mystery

[Phil Kane]

On 4/29/2020 10:31 PM, Edward R Cole wrote:

> CW test had been downgraded to a multiple question exam about plain
> language text message vs the five mixed character groups back in Detroit.

The ham CW test was always plain language text.  5-character groups were
only for the Radiotelegraph CW exams.

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

>From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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Re: [Elecraft] OT: The Colpitts mystery

[Phil Kane]

On 4/29/2020 10:31 PM, Edward R Cole wrote:

> Missed two questions on the written exam (because I knew more than the
> test designers and many of the answers were incorrect).

But it was a product of the private sector   :)

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

>From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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Re: [Elecraft] Elecraft Digest, Vol 192, Issue 43

[Jim Brown]

On 4/30/2020 6:22 AM, Tommy Judson via Elecraft wrote:

I’m wanting an Elecraft Elmer to help me understand which rig could be “the 
one”.


How do you operate? What sort of on-the-air activities?

73, Jim K9YC
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Re: [Elecraft] OT: The Colpitts mystery

[Fred Jensen]

Probably not Bill since it has drifted way off original topic and 
continues to do so.  I posed the original question.  My guess is that 
the Colpitts oscillator was probably the easiest to get stable [or 
nearly so] of the extant designs then because it uses capacitive 
feedback.  It would be the most familiar to examinees and the FCC just 
settled on it.  I remember that some only had to draw the schematic, 
others [including me] had to complete a partial schematic and answer 
questions.


Incidentally, Colpitts was also on my 1P and 2T exams.  Since the only 
copier then was Thermofax, once they had a question set about it, they 
probably just stuck to it.


73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 4/29/2020 8:44 PM, Nr4c wrote:

Will this “Mystery” ever be solved?

Sent from my iPhone
...nr4c. bill




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[Elecraft] New Mystery: Copying groups vs plain language text

[Fred Jensen]

Why were code tests with groups almost always at a slower speed than 
plain text?


I had to copy 5-character groups at 16 [I think], and plain text at 20 
[I also think ... might have been 25, it was a very long time ago] for 
the 2nd Telegraph.  I've never sat a military circuit to copy groups, 
all my experience with groups was practice, the test, and WX reports 
which sort of approximate groups.  However, I find groups to be easier 
copy than plain text, especially on a mill of teletype tape perforator 
keyboard.  The transition to "Ear-to-Fingers" mode with nothing passing 
through brain is almost instantaneous and permanent for the duration. 
With plain language text, I'll sometimes rouse from that state, try to 
make sense of what I'm copying and have to catch up.


Just curious, lots of folks here here have copied groups for a living 
and might know the answer.  Incidentally, Jettie Hill, W6RFF [SK], once 
told me that in WW2, he had to learn to sight-read inked tape at 45 or 
50 WPM.  I think that would have caged my eyeballs. [:=)


73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 4/30/2020 9:36 AM, Phil Kane wrote:

On 4/29/2020 10:31 PM, Edward R Cole wrote:


CW test had been downgraded to a multiple question exam about plain
language text message vs the five mixed character groups back in Detroit.

The ham CW test was always plain language text.  5-character groups were
only for the Radiotelegraph CW exams.

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402




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[Elecraft] DPOTA, anyone?

[Wayne Burdick]

DPOTA (n): Deserted Parks on the Air. (This activity is not to be confused with 
anticovidespotism, an emerging movement to thwart lockdowns.)

* * *

In the midst of all the fine Spring weather we're having, are you getting out, 
in both senses of the phrase? I'm finding no shortage of places to operate 
from. In northern California, at least, the trick is to follow obscure, 
little-used roads that lead to alternative entrances to parks, BLM land, etc. 
(Hint: Tunitas Creek road. Route 130 on the east side of Mt. Hamilton. There 
are many others.)

Happy adventuring! Stay 2 meters from other operators, keep a bandana handy for 
emergencies, and don't forget your KX-line radio :)

73,
Wayne
N6KR

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Re: [Elecraft] OT: The Colpitts mystery

[Eric Norris]

I took my Novice exam from another ham in 1972, but my general and advanced
at the FCC in 1977 or 1978.

73 Eric WD6DBM

On Tue, Apr 28, 2020, 9:27 PM Jim Brown  wrote:

> On 4/28/2020 4:16 PM, EricJ wrote:
> > but some time in the mid-50s it was given over to volunteer hams.
>
> My memory is that it was a LOT later than that. I'd guess late '70s to
> early '80s.
>
> 73, Jim K9YC
>
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[Elecraft] OT: The Great KPA Fan Mystery

[Eric Norris]

Why does the KPA500 suck air from the top vents and blow it out the back,
and the KPA1500 sucks air from the back and blows it out the top vents?
Was there a coup in Elecraft engineering?  Will future Elecraftologists be
looking for overwritten cartouches on the fan control boards?  And who,
exactly, is buried in KV64?

73 Eric WD6DBM
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Re: [Elecraft] Elecraft Digest, Vol 192, Issue 43

[Nr4c]

Well, Tommy. What do you want to do?  

If you want to build a radio from the PCB up, the K2 may be just the right 
choice. 

However if you want a 100 Watt radio with plenty of expand ability, the K3S is 
a good bet. However I don’t think Elecraft is selling them right now.  But 
there are many are available now in the used market. 

Or you could get on the waiting list for a K4. 

If you want a QRP rig, any of their rigs are available as QRP radios. 

This is the first questions you need to answer. 

Sent from my iPhone
...nr4c. bill


> On Apr 30, 2020, at 9:25 AM, Tommy Judson via Elecraft 
>  wrote:
> 
> Ok, joined this group even though I don’t own an Elecraft radio - yet.  I’m 
> wanting an Elecraft Elmer to help me understand which rig could be “the one”. 
>  What say someone please? Tommy
> 
>> On Apr 29, 2020, at 10:44 PM, elecraft-requ...@mailman.qth.net wrote:
>> 
>> Send Elecraft mailing list submissions to
>>elecraft@mailman.qth.net
>> 
>> To subscribe or unsubscribe via the World Wide Web, visit
>>http://mailman.qth.net/mailman/listinfo/elecraft
>> or, via email, send a message with subject or body 'help' to
>>elecraft-requ...@mailman.qth.net
>> 
>> You can reach the person managing the list at
>>elecraft-ow...@mailman.qth.net
>> 
>> When replying, please edit your Subject line so it is more specific
>> than "Re: Contents of Elecraft digest..."
>> 
>> 
>> Today's Topics:
>> 
>>  1. Re: Elecraft] OT: The Colpitts mystery (Dave Fugleberg)
>>  2. Re: Mail for Windows 10 (Jim Brown)
>>  3. KX3 Firmware (Ray Soifer)
>>  4. Evening Net Announcement & Invitation (kevinr)
>>  5. Re: OT: The Colpitts mystery (Roger D Johnson)
>>  6. Re: Elecraft Digest, Vol 192, Issue 42 (Martin)
>>  7. Re: Mail for Windows 10 (Phil Kane)
>>  8. K3 - Using Mono Phone Jack Adapter in "Key" Port (Brian Deuby)
>>  9. Re: Mail for Windows 10 (John Kosko)
>> 10. Testing (Bob DeHaney)
>> 11. Re: Power Supplies and Voltage drop (Phil Kane)
>> 12. Re: Mail for Windows 10 (Lynn W. Taylor, WB6UUT)
>> 13. Re: Mail for Windows 10 (Lynn W. Taylor, WB6UUT)
>> 14. KX3 internal battery charger normal behavior? (BT * )
>> (Mike Parkes)
>> 15. OT: The Colpitts mystery (Doug Faunt N6TQS +1-510-717-1197)
>> 16. Evening Net Invitation notes, addenda, and errata (kevinr)
>> 17. Re: OT: The Colpitts mystery (Fred Jensen)
>> 18. Re: OT: The Colpitts mystery (John Simmons)
>> 19. Re: OT: The Colpitts mystery (k7...@aol.com)
>> 20. Re: OT: The Colpitts mystery (EricJ)
>> 21. Re: OT: The Colpitts mystery (Macy monkeys)
>> 22. Re: Mail for Windows 10 (Brian  Denley)
>> 23. Re: OT: The Colpitts mystery (Phil Kane)
>> 24. Re: OT: The Colpitts mystery (Phil Kane)
>> 25. Elecraft Evening Net Report (kevinr)
>> 26. Re: OT: The Colpitts mystery (Nr4c)
>> 
>> 
>> --
>> 
>> Message: 1
>> Date: Wed, 29 Apr 2020 11:38:31 -0500
>> From: Dave
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Re: [Elecraft] OT: The Colpitts mystery

[Jim Cassidy]

I did all the FCC required licenses at Portland FCC.  General class while in 
High School, all commercial licenses including 3rd class radiotelegraph and 
Amateur Extra around early 1960s.  And with a 10 year broadcasting career 
usually yearly visits from McCann or another FCC engineer Burson at the 
broadcast station inspections.

73 KI7Y

- Original Message -
From: "Phil Kane" 
To: "Elecraft" 
Sent: Wednesday, April 29, 2020 7:32:31 PM
Subject: Re: [Elecraft] OT: The Colpitts mystery

On 4/29/2020 5:52 PM, Macy monkeys wrote:

> I took my General at the FCC office downtown Portland in the late
> 60s. The examiner was a tough and gruff staffer named Francis McCann.
> IMHO, he was extra tough on 14 year olds, hi. You know my heart was
> racing when that series of V's came through those headphones!

Frank McCann was one of the old timers when I joined the agency in 1967.
 By that time he was the Engineer in Charge of the Portland Office but
the EIC did a lot of the journeyman jobs in those smaller offices.  When
he retired in the late 1970s (or was it the early 1980s) I applied for
his job but they had to give it to someone else whose office was being
closed and I continued at the San Francisco Office until I retired in
1995.  I have no idea what happened to him after that.

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

>From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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[Elecraft] OT: The Great KPA Fan Mystery

[Andy Durbin]

"Why does the KPA500 suck air from the top vents and blow it out the back"

I asked quite a while ago what thermal analysis had been performed on the 
KPA500 and got no answer here.   It would seem reasonable for the fan to 
augment natural convection rather than oppose it.

Kenwood built a batch of TS-590SG with the fans installed backwards but 
eventually they corrected the mistake in production.  I don't think Elecraft 
ever decided the KPA500 fan was the wrong way round.

Now for a KPA500 mystery question - does heat flow from the Z bracket into the 
heatsink or does it flow from the heatsink to the Z bracket?

73,
Andy, k3wyc
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Re: [Elecraft] Elecraft Digest, Vol 192, Issue 43

[Wayne Burdick]

Hi Tommy,

If you're interested in field operating -- Field Day, mini-DXpeditions, HFpack, 
etc. -- you might consider a KX3 or KX2. The KX2 is my personal go-to radio for 
all of these activities because it's so small (half the size of the KX3) while 
still putting out up to 10 W from its internal battery. Both rigs have 
wide-range ATUs built-in so you can just toss a wire in a tree. They also have 
attached keyer paddles. 

The KX2 also has a built-in mic (you can use our MH3 with either rig). I use 
mine HT-style with an AX1 whip, and have worked all over the world this way 
while hiking (/PM, or Pedestrian Mobile). It's a challenge, but that's half the 
fun with QRP (low-power operating).

You can use either rig as a 100 W home station, when desired, by adding a 
KXPA100 amp (and optional KXAT100 ATU module). The KX3 also has an optional 
panadapter (PX3). 

We designed these rigs to be extremely flexible...hand-held, trailside, bike, 
mobile, or home station. 

Let me know if you have further questions.

73,
Wayne
N6KR


> On Apr 30, 2020, at 9:25 AM, Tommy Judson via Elecraft 
>  wrote:
> 
> Ok, joined this group even though I don’t own an Elecraft radio - yet.  I’m 
> wanting an Elecraft Elmer to help me understand which rig could be “the one”. 
>  What say someone please? Tommy


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Re: [Elecraft] OT: The Great KPA Fan Mystery

[Wayne Burdick]

For each product, we experimented with air flow direction and many other 
variables. The current configurations produced the fastest and most consistent 
cooling.

73,
Wayne
N6KR


> On Apr 30, 2020, at 12:01 PM, Andy Durbin  wrote:
> 
> "Why does the KPA500 suck air from the top vents and blow it out the back"
> 
> I asked quite a while ago what thermal analysis had been performed on the 
> KPA500 and got no answer here.   It would seem reasonable for the fan to 
> augment natural convection rather than oppose it.
> 
> Kenwood built a batch of TS-590SG with the fans installed backwards but 
> eventually they corrected the mistake in production.  I don't think Elecraft 
> ever decided the KPA500 fan was the wrong way round.
> 
> Now for a KPA500 mystery question - does heat flow from the Z bracket into 
> the heatsink or does it flow from the heatsink to the Z bracket?
> 
> 73,
> Andy, k3wyc
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Re: [Elecraft] OT: The Colpitts mystery

[JOE]

On 4/30/2020 1:35 PM, elecraft-requ...@mailman.qth.net wrote:

"In the 1950s and 1960s, Novice, Technician and Conditional exams were
given by licensees acting as volunteer examiners."


I took my novice test when I was 11 years old from W1ZWG at his home. 
This was the summer of 1958 and I believe that any General class or 
above could give a test for Novice and Technician class licenses.


73, Joe, K1ike


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Re: [Elecraft] DPOTA, anyone?

[Raymond]

Extra points if contacts made with K4
Ray
W8LYJ

Sent from my iPhone

> On Apr 30, 2020, at 12:07, Wayne Burdick  wrote:
> 
> DPOTA (n): Deserted Parks on the Air. (This activity is not to be confused 
> with anticovidespotism, an emerging movement to thwart lockdowns.)
> 
> * * *
> 
> In the midst of all the fine Spring weather we're having, are you getting 
> out, in both senses of the phrase? I'm finding no shortage of places to 
> operate from. In northern California, at least, the trick is to follow 
> obscure, little-used roads that lead to alternative entrances to parks, BLM 
> land, etc. (Hint: Tunitas Creek road. Route 130 on the east side of Mt. 
> Hamilton. There are many others.)
> 
> Happy adventuring! Stay 2 meters from other operators, keep a bandana handy 
> for emergencies, and don't forget your KX-line radio :)
> 
> 73,
> Wayne
> N6KR
> 
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Re: [Elecraft] OT: The Great KPA Fan Mystery

[Dave Cole]

I wish you all had included a filter slot...  :)

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources

On 4/30/20 12:06 PM, Wayne Burdick wrote:

For each product, we experimented with air flow direction and many other 
variables. The current configurations produced the fastest and most consistent 
cooling.

73,
Wayne
N6KR



On Apr 30, 2020, at 12:01 PM, Andy Durbin  wrote:

"Why does the KPA500 suck air from the top vents and blow it out the back"

I asked quite a while ago what thermal analysis had been performed on the 
KPA500 and got no answer here.   It would seem reasonable for the fan to 
augment natural convection rather than oppose it.

Kenwood built a batch of TS-590SG with the fans installed backwards but 
eventually they corrected the mistake in production.  I don't think Elecraft 
ever decided the KPA500 fan was the wrong way round.

Now for a KPA500 mystery question - does heat flow from the Z bracket into the 
heatsink or does it flow from the heatsink to the Z bracket?

73,
Andy, k3wyc
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Re: [Elecraft] OT: The Colpitts mystery

[John Simmons]

Jim,

All the broadcast inspections are now contracted out to private companies.

73,
-de John NI0K

Jim Cassidy wrote on 4/30/2020 1:47 PM:

I did all the FCC required licenses at Portland FCC.  General class while in 
High School, all commercial licenses including 3rd class radiotelegraph and 
Amateur Extra around early 1960s.  And with a 10 year broadcasting career 
usually yearly visits from McCann or another FCC engineer Burson at the 
broadcast station inspections.

73 KI7Y

- Original Message -
From: "Phil Kane" 
To: "Elecraft" 
Sent: Wednesday, April 29, 2020 7:32:31 PM
Subject: Re: [Elecraft] OT: The Colpitts mystery

On 4/29/2020 5:52 PM, Macy monkeys wrote:


I took my General at the FCC office downtown Portland in the late
60s. The examiner was a tough and gruff staffer named Francis McCann.
IMHO, he was extra tough on 14 year olds, hi. You know my heart was
racing when that series of V's came through those headphones!

Frank McCann was one of the old timers when I joined the agency in 1967.
  By that time he was the Engineer in Charge of the Portland Office but
the EIC did a lot of the journeyman jobs in those smaller offices.  When
he retired in the late 1970s (or was it the early 1980s) I applied for
his job but they had to give it to someone else whose office was being
closed and I continued at the San Francisco Office until I retired in
1995.  I have no idea what happened to him after that.

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

 From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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[Elecraft] P3-disappearing waterfall

[Fred Jensen]

The waterfall on my P3 disappeared.  I suspect it might have been 
associated with starting N1MM+ but I don't know that.  The "Waterfall" 
menu setting shows the screen split like I want it, but when I exit that 
menu item, the WF is still missing. Any suggestions?


73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

PS:  This may be a sneaky way for COVID to keep me busy while stuck at home?
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[Elecraft] K3S High Current in 6 metre mode

[raycollins]

I have just tried 6 metre USB operation for the first time on my K3S and I
notice that as soon as I key the transceiver (without speaking into the
microphone), the transceiver draws a quiescent current of 18 Amps with a
power meter indication of zero.  When I speak into the microphone, the
current reduces as the speech level increases and the power meter display
seems to give a sensible indication.

If I reduce the power setting to below 10 Watts and then key the
transceiver, the quiescent current drops to about 3 Amps.

These standing currents seem very high; is this to be expected?  Almost
looks like the power amp is Class A biased?  Can anybody please explain what
is happening?

Ray M1FJL



--
Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] P3-disappearing waterfall

[Grant Youngman]

Press “DISP” on the P3 and see if it comes back …

Grant NQ5T


> On Apr 30, 2020, at 4:11 PM, Fred Jensen  wrote:
> 
> The waterfall on my P3 disappeared.  I suspect it might have been associated 
> with starting N1MM+ but I don't know that.  The "Waterfall" menu setting 
> shows the screen split like I want it, but when I exit that menu item, the WF 
> is still missing. Any suggestions?
> 
> 73,
> Fred ["Skip"] K6DGW
> Sparks NV DM09dn
> Washoe County
> 
> PS:  This may be a sneaky way for COVID to keep me busy while stuck at home?
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Re: [Elecraft] P3-disappearing waterfall

[Grant Youngman]

I was thinking PX3.  On the P3 it's DISPLAY … 

Grant NQ5T

> On Apr 30, 2020, at 4:21 PM, Grant Youngman  wrote:
> 
> Press “DISP” on the P3 and see if it comes back …
> 
> Grant NQ5T
> 
> 
>> On Apr 30, 2020, at 4:11 PM, Fred Jensen  wrote:
>> 
>> The waterfall on my P3 disappeared.  I suspect it might have been associated 
>> with starting N1MM+ but I don't know that.  The "Waterfall" menu setting 
>> shows the screen split like I want it, but when I exit that menu item, the 
>> WF is still missing. Any suggestions?
>> 
>> 73,
>> Fred ["Skip"] K6DGW
>> Sparks NV DM09dn
>> Washoe County
>> 
>> PS:  This may be a sneaky way for COVID to keep me busy while stuck at home?
>> __
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> 

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Re: [Elecraft] OT: The Colpitts mystery

[Bill Steffey NY9H]

why have an engineer on staff ???    just shop a few services out for 
the best price.


When I got my First Phone I thought I could find great job security  
but I twisted from broadcasting to saleson the way home from my 
first interview with WAAF/WGRT I took a job in the audio industry...a 
career that lasted 40+ years.


and when they wanted my P1 ticket to give me GROL I took a pass, as I 
was NOT going to give that up.


bill


On 4/30/2020 3:58 PM, John Simmons wrote:

Jim,

All the broadcast inspections are now contracted out to private 
companies.


73,
-de John NI0K

Jim Cassidy wrote on 4/30/2020 1:47 PM:
I did all the FCC required licenses at Portland FCC.  General class 
while in High School, all commercial licenses including 3rd class 
radiotelegraph and Amateur Extra around early 1960s.  And with a 10 
year broadcasting career usually yearly visits from McCann or another 
FCC engineer Burson at the broadcast station inspections.


73 KI7Y

- Original Message -
From: "Phil Kane" 
To: "Elecraft" 
Sent: Wednesday, April 29, 2020 7:32:31 PM
Subject: Re: [Elecraft] OT: The Colpitts mystery

On 4/29/2020 5:52 PM, Macy monkeys wrote:


I took my General at the FCC office downtown Portland in the late
60s. The examiner was a tough and gruff staffer named Francis McCann.
IMHO, he was extra tough on 14 year olds, hi. You know my heart was
racing when that series of V's came through those headphones!

Frank McCann was one of the old timers when I joined the agency in 1967.
  By that time he was the Engineer in Charge of the Portland Office but
the EIC did a lot of the journeyman jobs in those smaller offices.  When
he retired in the late 1970s (or was it the early 1980s) I applied for
his job but they had to give it to someone else whose office was being
closed and I continued at the San Francisco Office until I retired in
1995.  I have no idea what happened to him after that.

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

 From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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--
This email has been checked for viruses by Avast antivirus software.
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Re: [Elecraft] P3-disappearing waterfall - SOLVED

[Fred Jensen]

Indeed!  Thank you Grant, I never touch that button and it's in a shadow 
behind the corner of the computer monitor.  Actually, I forgot it was 
there. [:=)


73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 4/30/2020 1:26 PM, Grant Youngman wrote:

I was thinking PX3.  On the P3 it's DISPLAY …

Grant NQ5T


On Apr 30, 2020, at 4:21 PM, Grant Youngman  wrote:

Press “DISP” on the P3 and see if it comes back …

Grant NQ5T



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[Elecraft] KX3 Sidetone volume using PHONES jack

[Bert]

Using headphones or external speaker plugged in to the PHONES jack,
the side tone level is much lower than listening to the internal speaker?

I have been trying to set the level with MON but doesn't make any 
difference.


Bert VE3NR

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Re: [Elecraft] OT: The Great KPA Fan Mystery

[Lyn Norstad]

You just answered the question, Dave - and it's a two-fold solution for the
KPA500:

1)  There is likely less dust on the top than in the rat's nest of wires and
cables found behind the unit (at least that's the case with mine, since it
sits within a small shelving unit), and
2)  You can easily lay a filter pad on top of the KPA500.

Problem solved. You're welcome.

73
Lyn, W0LEN


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Dave Cole
Sent: Thursday, April 30, 2020 2:40 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] OT: The Great KPA Fan Mystery

I wish you all had included a filter slot...  :)

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources

On 4/30/20 12:06 PM, Wayne Burdick wrote:
> For each product, we experimented with air flow direction and many other
variables. The current configurations produced the fastest and most
consistent cooling.
> 
> 73,
> Wayne
> N6KR
> 
> 
>> On Apr 30, 2020, at 12:01 PM, Andy Durbin  wrote:
>>
>> "Why does the KPA500 suck air from the top vents and blow it out the
back"
>>
>> I asked quite a while ago what thermal analysis had been performed on the
KPA500 and got no answer here.   It would seem reasonable for the fan to
augment natural convection rather than oppose it.
>>
>> Kenwood built a batch of TS-590SG with the fans installed backwards but
eventually they corrected the mistake in production.  I don't think Elecraft
ever decided the KPA500 fan was the wrong way round.
>>
>> Now for a KPA500 mystery question - does heat flow from the Z bracket
into the heatsink or does it flow from the heatsink to the Z bracket?
>>
>> 73,
>> Andy, k3wyc
>> __
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Re: [Elecraft] KX3 Sidetone volume using PHONES jack

[Grant Youngman]

Are you sure you have pressed MON and are changing the monitor volume, and not 
just the main AF gain?  MON volume is independent of AF gain.

Mine seems to work just fine.  I rarely use the internal speaker, and generally 
only use headphones or an external powered speaker.  Just verified that it was 
working properly … plenty of monitor level.

Grant NQ5T

> On Apr 30, 2020, at 4:46 PM, Bert  wrote:
> 
> Using headphones or external speaker plugged in to the PHONES jack,
> the side tone level is much lower than listening to the internal speaker?
> 
> I have been trying to set the level with MON but doesn't make any difference.
> 
> Bert VE3NR
> 
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Re: [Elecraft] OT: The Colpitts mystery

[hawley, charles j jr]

The Heathkit AT1 has a Colpitts 6AG7 0scillator.

Just helping to solve the mystery...

Chuck Hawley
 c-haw...@illinois.edu

 Amateur Radio, KE9UW
 aka Jack, BMW Motorcycles


From: elecraft-boun...@mailman.qth.net  on 
behalf of Eric Norris 
Sent: Thursday, April 30, 2020 1:18 PM
To: j...@audiosystemsgroup.com 
Cc: elecraft@mailman qth. net 
Subject: Re: [Elecraft] OT: The Colpitts mystery

I took my Novice exam from another ham in 1972, but my general and advanced
at the FCC in 1977 or 1978.

73 Eric WD6DBM

On Tue, Apr 28, 2020, 9:27 PM Jim Brown  wrote:

> On 4/28/2020 4:16 PM, EricJ wrote:
> > but some time in the mid-50s it was given over to volunteer hams.
>
> My memory is that it was a LOT later than that. I'd guess late '70s to
> early '80s.
>
> 73, Jim K9YC
>
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[Elecraft] BC station inspections

[Ken G Kopp]

Local 2-way friend's shop here in Montana has several under contract.

FWIW

73

K0PP

On Thu, Apr 30, 2020, 13:59 John Simmons  wrote:

> Jim,
>
> All the broadcast inspections are now contracted out to private companies.
>
> 73,
> -de John NI0K
>
> Jim Cassidy wrote on 4/30/2020 1:47 PM:
> > I did all the FCC required licenses at Portland FCC.  General class
> while in High School, all commercial licenses including 3rd class
> radiotelegraph and Amateur Extra around early 1960s.  And with a 10 year
> broadcasting career usually yearly visits from McCann or another FCC
> engineer Burson at the broadcast station inspections.
> >
> > 73 KI7Y
> >
> > - Original Message -
> > From: "Phil Kane" 
> > To: "Elecraft" 
> > Sent: Wednesday, April 29, 2020 7:32:31 PM
> > Subject: Re: [Elecraft] OT: The Colpitts mystery
> >
> > On 4/29/2020 5:52 PM, Macy monkeys wrote:
> >
> >> I took my General at the FCC office downtown Portland in the late
> >> 60s. The examiner was a tough and gruff staffer named Francis McCann.
> >> IMHO, he was extra tough on 14 year olds, hi. You know my heart was
> >> racing when that series of V's came through those headphones!
> > Frank McCann was one of the old timers when I joined the agency in 1967.
> >   By that time he was the Engineer in Charge of the Portland Office but
> > the EIC did a lot of the journeyman jobs in those smaller offices.  When
> > he retired in the late 1970s (or was it the early 1980s) I applied for
> > his job but they had to give it to someone else whose office was being
> > closed and I continued at the San Francisco Office until I retired in
> > 1995.  I have no idea what happened to him after that.
> >
> > 73 de K2ASP - Phil Kane
> > Elecraft K2/100   s/n 5402
> >
> >  From a Clearing in the Silicon Forest
> > Beaverton (Washington County) Oregon
> > __
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Re: [Elecraft] Elecraft Digest, Vol 192, Issue 43

[Clay Autery]

Well, you came to the right place.  The folks here in THIS group are the 
ones who got me headed in the right direction.


Then of course, David Shoaf and his crew at Elecraft spent the requisite 
time to get me the best bang for my buck for initial config, AND helped 
me make a logical plan for maxing out the upgrades as additional funding 
became available.


Got my K3s/P3 combo maxed out with THE very LAST NIB 2nd Receiver on the 
shelf  Talk about sneaking in under the wire.


You will likely want to do something similar in the K4  K-Line

Feel free to contact me directly and we can chat to your heart's content 
about Elecraft  I am all about "paying it forward".
Of course, there are much smarter and more experienced folks out in 
Elecraft land than me  especially as regards the soon to be 
available K4...


73, and welcome to the support group for the best amateur radio ON THE 
PLANET!


__
Clay Autery, KY5G
(318) 518-1389

On 04/30/20 08:22, Tommy Judson via Elecraft wrote:

Ok, joined this group even though I don’t own an Elecraft radio - yet.  I’m 
wanting an Elecraft Elmer to help me understand which rig could be “the one”.  
What say someone please? Tommy


On Apr 29, 2020, at 10:44 PM, elecraft-requ...@mailman.qth.net wrote:

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When replying, please edit your Subject line so it is more specific
than "Re: Contents of Elecraft digest..."


Today's Topics:

   1. Re: Elecraft] OT: The Colpitts mystery (Dave Fugleberg)
   2. Re: Mail for Windows 10 (Jim Brown)
   3. KX3 Firmware (Ray Soifer)
   4. Evening Net Announcement & Invitation (kevinr)
   5. Re: OT: The Colpitts mystery (Roger D Johnson)
   6. Re: Elecraft Digest, Vol 192, Issue 42 (Martin)
   7. Re: Mail for Windows 10 (Phil Kane)
   8. K3 - Using Mono Phone Jack Adapter in "Key" Port (Brian Deuby)
   9. Re: Mail for Windows 10 (John Kosko)
  10. Testing (Bob DeHaney)
  11. Re: Power Supplies and Voltage drop (Phil Kane)
  12. Re: Mail for Windows 10 (Lynn W. Taylor, WB6UUT)
  13. Re: Mail for Windows 10 (Lynn W. Taylor, WB6UUT)
  14. KX3 internal battery charger normal behavior? (BT * )
  (Mike Parkes)
  15. OT: The Colpitts mystery (Doug Faunt N6TQS +1-510-717-1197)
  16. Evening Net Invitation notes, addenda, and errata (kevinr)
  17. Re: OT: The Colpitts mystery (Fred Jensen)
  18. Re: OT: The Colpitts mystery (John Simmons)
  19. Re: OT: The Colpitts mystery (k7...@aol.com)
  20. Re: OT: The Colpitts mystery (EricJ)
  21. Re: OT: The Colpitts mystery (Macy monkeys)
  22. Re: Mail for Windows 10 (Brian  Denley)
  23. Re: OT: The Colpitts mystery (Phil Kane)
  24. Re: OT: The Colpitts mystery (Phil Kane)
  25. Elecraft Evening Net Report (kevinr)
  26. Re: OT: The Colpitts mystery (Nr4c)


--

Message: 1
Date: Wed, 29 Apr 2020 11:38:31 -0500
From: Dave Fugleberg 
To: Gerry Villhauer 
Cc: "Elecraft@mailman.qth.net" 
Subject: Re: [Elecraft] Elecraft] OT: The Colpitts mystery
Message-ID:

Content-Type: text/plain; charset="UTF-8"

Yep, that was the textbook for the Communications class I had in
electronics school in 1983. One of the requirements to pass the class was
to pass the General Radiotelephone exam. The FCC Examiner came over from
the St Paul field office to the technical school to administer the exam to
the class.
Shortly after that, I went to the field office and passed the General and
Advanced  amateur exams...most of the technical portions were nearly
identical to the General Radiotelephone.

On Wed, Apr 29, 2020 at 8:35 AM Gerry Villhauer  wrote:


The text book of choice for the commercial license test was: Electronic
Communications by Shrader. I have a copy, 2nd addition. I used it for
passing my 2nd and 1st class commercial test...Now the General Radio
Telecommunication License.
Gerry, W0GV
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--

Message: 2
Date: Wed, 29 Apr 2020 09:41:01 -0700
From: Jim Brown 
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Mail for Windows 10
Message-ID:

Content-Type: text/plain; charset=utf-8; format=flowed

On 4/29/2020 5:31 AM, Chuck Chandler wrote:

Unless the list is capable of being re-configured (possibly with the '
*convert_html_to_plaintext*  '

Re: [Elecraft] OT: The Great KPA Fan Mystery

[Clay Autery]

Wayne is correct  (of course).  Thermal performance VERY often runs 
altogether in opposition to intuitive thinking on the application.


__
Clay Autery, KY5G
(318) 518-1389

On 04/30/20 14:06, Wayne Burdick wrote:

For each product, we experimented with air flow direction and many other 
variables. The current configurations produced the fastest and most consistent 
cooling.

73,
Wayne
N6KR



On Apr 30, 2020, at 12:01 PM, Andy Durbin  wrote:

"Why does the KPA500 suck air from the top vents and blow it out the back"

I asked quite a while ago what thermal analysis had been performed on the 
KPA500 and got no answer here.   It would seem reasonable for the fan to 
augment natural convection rather than oppose it.

Kenwood built a batch of TS-590SG with the fans installed backwards but 
eventually they corrected the mistake in production.  I don't think Elecraft 
ever decided the KPA500 fan was the wrong way round.

Now for a KPA500 mystery question - does heat flow from the Z bracket into the 
heatsink or does it flow from the heatsink to the Z bracket?

73,
Andy, k3wyc

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Re: [Elecraft] DPOTA, anyone?

[Clay Autery]

Soo much awesome in those two posts!

__
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(318) 518-1389

On 04/30/20 14:30, Raymond wrote:

Extra points if contacts made with K4
Ray
W8LYJ

Sent from my iPhone


On Apr 30, 2020, at 12:07, Wayne Burdick  wrote:

DPOTA (n): Deserted Parks on the Air. (This activity is not to be confused 
with anticovidespotism, an emerging movement to thwart lockdowns.)

* * *

In the midst of all the fine Spring weather we're having, are you getting out, 
in both senses of the phrase? I'm finding no shortage of places to operate 
from. In northern California, at least, the trick is to follow obscure, 
little-used roads that lead to alternative entrances to parks, BLM land, etc. 
(Hint: Tunitas Creek road. Route 130 on the east side of Mt. Hamilton. There 
are many others.)

Happy adventuring! Stay 2 meters from other operators, keep a bandana handy for 
emergencies, and don't forget your KX-line radio :)

73,
Wayne
N6KR

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Re: [Elecraft] OT: The Great KPA Fan Mystery

[Clay Autery]

With a little searching online, you can find ultra-fine dust screens 
that do not reduce volume too much that are also very thin, and can 
be temp mounted on the intake vents without radically injuring the 
aesthetics.


IF you care less about aesthetics and more about performance, I can 
point you in the right direction to constructing an intake filter 
assembly from OTS parts that will trap 90%+ of the pairborne 
particulates with less than 3% volume and air velocity reduction.

Better than that IF you are willing to pay the prices...

BEST practices is to leave Wayne and Eric's creation alone, and simply 
crack her open every 3 months and blow her out (CAREFULLY) with CLEAN 
and DRY air...


73,

__
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(318) 518-1389

On 04/30/20 14:40, Dave Cole wrote:

I wish you all had included a filter slot...  :)

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources



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Re: [Elecraft] New Mystery: Copying groups vs plain language text (Rather OT)

[Mike Morrow]

Fred,

The Radiotelegraph Second Class license required send and receive at 20 wpm 
Plain Language and 16 wpm Code Groups with no errors for one minute during the 
five minute test.  The First Class license had the same written elements (1, 2, 
5, 6) as the Second Class license but the Morse test was 25 wpm Plain Language 
and 20 wpm Code Groups, plus a six-month service requirement at stations open 
to public correspondence.  (That "public correspondence" service requirement 
kept many operators with decades of commercial Morse service from ever getting 
a First Class license.  However, every maritime Morse station was defined as 
open to public correspondence even if it was on a freighter and never had any 
such traffic.)

The rare Aircraft Radiotelegraph Endorsement to Second or First Class licenses 
required the same Morse exam as the First Class license.

IIRC, the FCC required use of hand copy and straight key for Second Class, but 
allowed typewritter and bug for the First Class tests.

After I left the US Navy as a submarine officer more than 40 years ago, I 
decided I'd like to try my hand as a maritime radio officer before that job 
disappeared.  (I was one of the few Navy people that loved going to sea.) I 
very much found the seemingly slow 16-wpm Code Group test significantly more 
difficult for test-taking purposes (when one is still developing skills) than 
Plain Language.  As few as five errors in the 400 character test could prevent 
getting the required 80 consecutive error-free characters.  It took me three 
400-mile round trips to the Kansas City Field Office, only because of the 16 
wom Code Group test.  The 20 wpm Plain Language test (given first) was always 
child's play.  I know that with practice and a mill an automatic unthinking 
response soon develops, but I did not get that far.

For many years the FCC waived the Amateur Extra Morse exam for an applicant if 
he had held a commercial radiotelegraph license.  In the mid-1990s, the FCC 
started waiving the Radiotelegraph Second Class Morse exams for an applicant 
holding an Amateur Extra Class license.  That was a very signicicant relaxation 
of test standards for the commercial Radiotelegraph license, but by then there 
wasn't much call for the license.

I never did get into Radio Officer work because a few months after licensing a 
new but permanent medical condition disqualified me from Safety-of-Life-at-Sea 
(SOLAS) duties.  During Desert Storm/Desert Shield the US began reactivating 
enough old US-flag merchant vessels that one of the Radio Officer associations 
solicited license holders for a short paid training program and employment as 
new Radio Officers.  Even 30 years ago there weren't many newcomers interested 
in starting a obvious dead end career, but 15 years earlier I'd have sent in my 
application if medically qualified.

WRT Phil's comments below, it surprises me when hams claim adamantly that their 
Morse test was code groups.  I attribute that to fading memory.  Similary, it 
was recently stated that a Broadcast Endorsement was attained after earning the 
Radiotelephone First Class license.  The Broadcast Endorsement was granted only 
to Third Class license holders to show that the announcer (with Third Class 
license) also had knowledge to serve as transmitter attendant (with Broadcast 
Endorsement) at small broadcast stations.  Memory plays tricks on us old 
people. :-)

Mike / KK5F

-Original Message-
>From: Fred Jensen 
>Sent: Apr 30, 2020 12:35 PM
>
>Why were code tests with groups almost always at a slower speed than 
>plain text?
>
>I had to copy 5-character groups at 16 [I think], and plain text at 20 
>[I also think ... might have been 25, it was a very long time ago] for 
>the 2nd Telegraph.  I've never sat a military circuit to copy groups, 
>all my experience with groups was practice, the test, and WX reports 
>which sort of approximate groups.  However, I find groups to be easier 
>copy than plain text, especially on a mill of teletype tape perforator 
>keyboard.  The transition to "Ear-to-Fingers" mode with nothing passing 
>through brain is almost instantaneous and permanent for the duration. 
>With plain language text, I'll sometimes rouse from that state, try to 
>make sense of what I'm copying and have to catch up.
>
>Just curious, lots of folks here here have copied groups for a living 
>and might know the answer.  Incidentally, Jettie Hill, W6RFF [SK], once 
>told me that in WW2, he had to learn to sight-read inked tape at 45 or 
>50 WPM.  I think that would have caged my eyeballs. [:=)
>
>73,
>Fred ["Skip"] K6DGW
>Sparks NV DM09dn
>Washoe County
>
>On 4/30/2020 9:36 AM, Phil Kane wrote:
>
>> On 4/29/2020 10:31 PM, Edward R Cole wrote:
>>
>>> CW test had been downgraded to a multiple question exam about plain
>>> language text message vs the five mixed character groups back in Detroit.
>>
>> The ham CW test was always plain language text.  5-character groups were
>> only for the Radi

Re: [Elecraft] New Mystery: Copying groups vs plain language text (Rather OT)

[Robert G Strickland via Elecraft]

Mike...

When I tested for my general, vintage 1960, I had to receive a five 
minute plain text code message with no errors for one minute. But, I 
don't remember having to send anything (I did have to draw the Colpits 
oscillator, HI). And, for sure, no 5-letter groups. I was scared to 
death, but managed to get through it. You're right about the tricks of 
memory after 80 or so years. After a long hiatus, I started out again at 
age 50, and the code was much easier. I think computer programs made 
learning code easier, or at least it did for me.


...robert

On 5/1/2020 12:50 AM, Mike Morrow wrote:

Fred,

The Radiotelegraph Second Class license required send and receive at 20 wpm Plain 
Language and 16 wpm Code Groups with no errors for one minute during the five minute 
test.  The First Class license had the same written elements (1, 2, 5, 6) as the Second 
Class license but the Morse test was 25 wpm Plain Language and 20 wpm Code Groups, plus a 
six-month service requirement at stations open to public correspondence.  (That 
"public correspondence" service requirement kept many operators with decades of 
commercial Morse service from ever getting a First Class license.  However, every 
maritime Morse station was defined as open to public correspondence even if it was on a 
freighter and never had any such traffic.)

The rare Aircraft Radiotelegraph Endorsement to Second or First Class licenses 
required the same Morse exam as the First Class license.

IIRC, the FCC required use of hand copy and straight key for Second Class, but 
allowed typewritter and bug for the First Class tests.

After I left the US Navy as a submarine officer more than 40 years ago, I 
decided I'd like to try my hand as a maritime radio officer before that job 
disappeared.  (I was one of the few Navy people that loved going to sea.) I 
very much found the seemingly slow 16-wpm Code Group test significantly more 
difficult for test-taking purposes (when one is still developing skills) than 
Plain Language.  As few as five errors in the 400 character test could prevent 
getting the required 80 consecutive error-free characters.  It took me three 
400-mile round trips to the Kansas City Field Office, only because of the 16 
wom Code Group test.  The 20 wpm Plain Language test (given first) was always 
child's play.  I know that with practice and a mill an automatic unthinking 
response soon develops, but I did not get that far.

For many years the FCC waived the Amateur Extra Morse exam for an applicant if 
he had held a commercial radiotelegraph license.  In the mid-1990s, the FCC 
started waiving the Radiotelegraph Second Class Morse exams for an applicant 
holding an Amateur Extra Class license.  That was a very signicicant relaxation 
of test standards for the commercial Radiotelegraph license, but by then there 
wasn't much call for the license.

I never did get into Radio Officer work because a few months after licensing a 
new but permanent medical condition disqualified me from Safety-of-Life-at-Sea 
(SOLAS) duties.  During Desert Storm/Desert Shield the US began reactivating 
enough old US-flag merchant vessels that one of the Radio Officer associations 
solicited license holders for a short paid training program and employment as 
new Radio Officers.  Even 30 years ago there weren't many newcomers interested 
in starting a obvious dead end career, but 15 years earlier I'd have sent in my 
application if medically qualified.

WRT Phil's comments below, it surprises me when hams claim adamantly that their 
Morse test was code groups.  I attribute that to fading memory.  Similary, it 
was recently stated that a Broadcast Endorsement was attained after earning the 
Radiotelephone First Class license.  The Broadcast Endorsement was granted only 
to Third Class license holders to show that the announcer (with Third Class 
license) also had knowledge to serve as transmitter attendant (with Broadcast 
Endorsement) at small broadcast stations.  Memory plays tricks on us old 
people. :-)

Mike / KK5F

-Original Message-

From: Fred Jensen 
Sent: Apr 30, 2020 12:35 PM

Why were code tests with groups almost always at a slower speed than
plain text?

I had to copy 5-character groups at 16 [I think], and plain text at 20
[I also think ... might have been 25, it was a very long time ago] for
the 2nd Telegraph.  I've never sat a military circuit to copy groups,
all my experience with groups was practice, the test, and WX reports
which sort of approximate groups.  However, I find groups to be easier
copy than plain text, especially on a mill of teletype tape perforator
keyboard.  The transition to "Ear-to-Fingers" mode with nothing passing
through brain is almost instantaneous and permanent for the duration.
With plain language text, I'll sometimes rouse from that state, try to
make sense of what I'm copying and have to catch up.

Just curious, lots of folks here here have copied groups for a living
and might know the answer.  

[Elecraft] New Mystery: Copying groups vs plain language text (Rather OT)

[Rose]

Now, in my mid-eighties I can still hear the cigar chewing examiner, a Mr.
Neeb saying "Son, that's mighty fine code" ...

This would have been in the very early sixties.

See my QRZ page for additional related info.

73

Ken Kopp - K0PP

On Thu, Apr 30, 2020, 19:25 Robert G Strickland via Elecraft <
elecraft@mailman.qth.net> wrote:

> Mike...
>
> When I tested for my general, vintage 1960, I had to receive a five
> minute plain text code message with no errors for one minute. But, I
> don't remember having to send anything (I did have to draw the Colpits
> oscillator, HI). And, for sure, no 5-letter groups. I was scared to
> death, but managed to get through it. You're right about the tricks of
> memory after 80 or so years. After a long hiatus, I started out again at
> age 50, and the code was much easier. I think computer programs made
> learning code easier, or at least it did for me.
>
> ...robert
>
> On 5/1/2020 12:50 AM, Mike Morrow wrote:
> > Fred,
> >
> > The Radiotelegraph Second Class license required send and receive at 20
> wpm Plain Language and 16 wpm Code Groups with no errors for one minute
> during the five minute test.  The First Class license had the same written
> elements (1, 2, 5, 6) as the Second Class license but the Morse test was 25
> wpm Plain Language and 20 wpm Code Groups, plus a six-month service
> requirement at stations open to public correspondence.  (That "public
> correspondence" service requirement kept many operators with decades of
> commercial Morse service from ever getting a First Class license.  However,
> every maritime Morse station was defined as open to public correspondence
> even if it was on a freighter and never had any such traffic.)
> >
> > The rare Aircraft Radiotelegraph Endorsement to Second or First Class
> licenses required the same Morse exam as the First Class license.
> >
> > IIRC, the FCC required use of hand copy and straight key for Second
> Class, but allowed typewritter and bug for the First Class tests.
> >
> > After I left the US Navy as a submarine officer more than 40 years ago,
> I decided I'd like to try my hand as a maritime radio officer before that
> job disappeared.  (I was one of the few Navy people that loved going to
> sea.) I very much found the seemingly slow 16-wpm Code Group test
> significantly more difficult for test-taking purposes (when one is still
> developing skills) than Plain Language.  As few as five errors in the 400
> character test could prevent getting the required 80 consecutive error-free
> characters.  It took me three 400-mile round trips to the Kansas City Field
> Office, only because of the 16 wom Code Group test.  The 20 wpm Plain
> Language test (given first) was always child's play.  I know that with
> practice and a mill an automatic unthinking response soon develops, but I
> did not get that far.
> >
> > For many years the FCC waived the Amateur Extra Morse exam for an
> applicant if he had held a commercial radiotelegraph license.  In the
> mid-1990s, the FCC started waiving the Radiotelegraph Second Class Morse
> exams for an applicant holding an Amateur Extra Class license.  That was a
> very signicicant relaxation of test standards for the commercial
> Radiotelegraph license, but by then there wasn't much call for the license.
> >
> > I never did get into Radio Officer work because a few months after
> licensing a new but permanent medical condition disqualified me from
> Safety-of-Life-at-Sea (SOLAS) duties.  During Desert Storm/Desert Shield
> the US began reactivating enough old US-flag merchant vessels that one of
> the Radio Officer associations solicited license holders for a short paid
> training program and employment as new Radio Officers.  Even 30 years ago
> there weren't many newcomers interested in starting a obvious dead end
> career, but 15 years earlier I'd have sent in my application if medically
> qualified.
> >
> > WRT Phil's comments below, it surprises me when hams claim adamantly
> that their Morse test was code groups.  I attribute that to fading memory.
> Similary, it was recently stated that a Broadcast Endorsement was attained
> after earning the Radiotelephone First Class license.  The Broadcast
> Endorsement was granted only to Third Class license holders to show that
> the announcer (with Third Class license) also had knowledge to serve as
> transmitter attendant (with Broadcast Endorsement) at small broadcast
> stations.  Memory plays tricks on us old people. :-)
> >
> > Mike / KK5F
> >
> > -Original Message-
> >> From: Fred Jensen 
> >> Sent: Apr 30, 2020 12:35 PM
> >>
> >> Why were code tests with groups almost always at a slower speed than
> >> plain text?
> >>
> >> I had to copy 5-character groups at 16 [I think], and plain text at 20
> >> [I also think ... might have been 25, it was a very long time ago] for
> >> the 2nd Telegraph.  I've never sat a military circuit to copy groups,
> >> all my experience with groups was practice, the test, and WX report

Re: [Elecraft] OT: The Colpitts mystery

[Phil Kane]

On 4/30/2020 12:58 PM, John Simmons wrote:

> All the broadcast inspections are now contracted out to private companies.

Not exactly.  The FCC started the  Alternate Broadcast Inspection
Program (ABIT)  about the time that I retired from the FCC. in the mid
1990s when there was a push to privatize Federal agency obligations  to
some extent.  The FCC did it for broadcast station inspections, ship
station safety inspections, and resolution of harmful interference.

ABIT is a voluntary program under the management of the various state
broadcasters' associations that contract with individuals to make
compliance inspections of broadcast stations.  The station pays the
association a fixed fee, and the association pays the inspector.  I
contracted with the California association from 1996 until 1999 and
traveled all over the state.

Notification of passing an ABIT inspection was sent to the FCC but
failures were not so reported.  I don't know if that is still done.
Such passing was regarded as "insulation" from FCC inspection for three
years but the FCC still has the obligation to inspect broadcast stations
both on a random basis for compliance with specific programs such as
tower lighting and EAS compliance or if a complaint has been filed that
bears on rule compliance, technical and otherwise.  --

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

>From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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Re: [Elecraft] Boxes of tubes? What todo?

[kt5te]

Hello all,

Thank you for all the help and advice!  

A nice gentleman and I are going to meet when I do a feed run to Bryan, TX.  
That will cut 
a 5 hour trip to 2.5.  I usually pick up a ton (or more) at a time for the 
draft horses, cattle & 
goats. :-)  The plan is for him to do an inventory of the tubes and other 
items.  Then a little 
later make them available for others.   I'll pass along the names of the hams 
interested in 
the tubes.  
-- 
73, William KT5TE

On Thursday, April 30, 2020 6:56:20 AM CDT kt...@watershipfarm.com wrote:
> I know this is unusual for the list, but I was hoping someone could send me
> in the right direction.
> 
> In the attic of a house that was being refurbished for a office I found
> boxes full of tubes and other stuff from the 40s & 50s.   I hated to pitch
> these items and figured somebody might want them, so brought it all home.
> :-)  The house has been empty for years, but I did find a newspaper
> clipping and a QSO card from the 50s for Maj. Cantrell.  He was called
> "Misawa's Iron Jaw".   I bet you can guess his MOS?
> 
> What do I do...?



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Re: [Elecraft] OT: The Colpitts mystery

[Phil Kane]

On 4/30/2020 1:32 PM, Bill Steffey NY9H wrote:

> and when they wanted my P1 ticket to give me GROL I took a pass, as I
> was NOT going to give that up.

So you wound up with nothing when your P1 expired versus keeping the
same privileges with a GROL which soon became a lifetime license.  PS -
you would have been able to keep the P1 certificate as a "souvenir".

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

>From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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Re: [Elecraft] New Mystery: Copying groups vs plain language text (Rather OT)

[Fred Jensen]

I guess my memory is better than I thought. In '56, I sat for the 2T 
accidentally ... 16, new driver, terrified driving to downtown Los 
Angeles, and got there in the AM as he was setting up for the 2T.  He 
[roughish sort of guy, voice like a growl, cigar, and no fooling, green 
eye shade] gave me an app, said,  "Fill it out, if you pass the code you 
get credit for the Extra this afternoon."  I passed with 5 minutes of 
correct copy on both groups and plain text. He gave me the written exam, 
I told him I was only 16, birth date was on the app.  He removed the 
cigar, looked right at me and said, "Son, sit down and answer the damn 
questions."  So I did, and passed ... exactly.  There were a couple or 
three "Colpitts Questions."  Passed the Extra that afternoon, same guy, 
same cigar, same growl.


The 2T and Extra were both pencil/paper copy and J-28 screwed to the 
desk with ungodly wide spacing ... not to be adjusted by examinees. 
[:-)  Although I already had credit for the code, I wrote it anyway, and 
it was all plain text.  I really don't know where the urban legend of 
groups for the Extra came from but lots of folk think it was a 
requirement.  Used my 2T for 10 mo while a HS senior as the "Station 
Kid" at a coastal marine station, it expired while I was in college.  
Kept the 1P, it became a lifetime GROL which is somewhere around here.  
I still wonder why the groups were slower than plaintext, they were a 
lot easier for me.


73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 4/30/2020 5:50 PM, Mike Morrow wrote:

Fred,

The Radiotelegraph Second Class license required send and receive at 20 wpm Plain 
Language and 16 wpm Code Groups with no errors for one minute during the five minute 
test.  The First Class license had the same written elements (1, 2, 5, 6) as the Second 
Class license but the Morse test was 25 wpm Plain Language and 20 wpm Code Groups, plus a 
six-month service requirement at stations open to public correspondence.  (That 
"public correspondence" service requirement kept many operators with decades of 
commercial Morse service from ever getting a First Class license.  However, every 
maritime Morse station was defined as open to public correspondence even if it was on a 
freighter and never had any such traffic.)

The rare Aircraft Radiotelegraph Endorsement to Second or First Class licenses 
required the same Morse exam as the First Class license.

IIRC, the FCC required use of hand copy and straight key for Second Class, but 
allowed typewritter and bug for the First Class tests.

After I left the US Navy as a submarine officer more than 40 years ago, I 
decided I'd like to try my hand as a maritime radio officer before that job 
disappeared.  (I was one of the few Navy people that loved going to sea.) I 
very much found the seemingly slow 16-wpm Code Group test significantly more 
difficult for test-taking purposes (when one is still developing skills) than 
Plain Language.  As few as five errors in the 400 character test could prevent 
getting the required 80 consecutive error-free characters.  It took me three 
400-mile round trips to the Kansas City Field Office, only because of the 16 
wom Code Group test.  The 20 wpm Plain Language test (given first) was always 
child's play.  I know that with practice and a mill an automatic unthinking 
response soon develops, but I did not get that far.

For many years the FCC waived the Amateur Extra Morse exam for an applicant if 
he had held a commercial radiotelegraph license.  In the mid-1990s, the FCC 
started waiving the Radiotelegraph Second Class Morse exams for an applicant 
holding an Amateur Extra Class license.  That was a very signicicant relaxation 
of test standards for the commercial Radiotelegraph license, but by then there 
wasn't much call for the license.

I never did get into Radio Officer work because a few months after licensing a 
new but permanent medical condition disqualified me from Safety-of-Life-at-Sea 
(SOLAS) duties.  During Desert Storm/Desert Shield the US began reactivating 
enough old US-flag merchant vessels that one of the Radio Officer associations 
solicited license holders for a short paid training program and employment as 
new Radio Officers.  Even 30 years ago there weren't many newcomers interested 
in starting a obvious dead end career, but 15 years earlier I'd have sent in my 
application if medically qualified.

WRT Phil's comments below, it surprises me when hams claim adamantly that their 
Morse test was code groups.  I attribute that to fading memory.  Similary, it 
was recently stated that a Broadcast Endorsement was attained after earning the 
Radiotelephone First Class license.  The Broadcast Endorsement was granted only 
to Third Class license holders to show that the announcer (with Third Class 
license) also had knowledge to serve as transmitter attendant (with Broadcast 
Endorsement) at small broadcast stations.  Memory plays tricks on us old 
people. :-)

Mik

Re: [Elecraft] New Mystery: Copying groups vs plain language text (Rather OT)

[Phil Kane]

On 4/30/2020 5:50 PM, Mike Morrow wrote:

> The First Class license had the same written elements (1, 2, 5, 6) as
> the Second Class license but the Morse test was 25 wpm Plain Language
> and 20 wpm Code Groups, plus a six-month service requirement at
> stations open to public correspondence.

The experience requirement for the First Telegraph was a year at a
station open to
public correspondence (see below).  The Six Months Endorsement required
six moths or more actual experience on an ocean-going passenger or
cargo vessel and was required to be the sole operator on an ocean-going
cargo vessel.
Without that, the operator could only be an operator at a coast station
 or a second operator on a passenger or cargo vessel.

The FCC no longer issues or tests for First Telegraph licenses, and
existing licenses were renewed as lifetime licenses as were Second
Telegraph licenses, now renamed as plain Radiotelegraph Operator License.

> (That "public correspondence" service requirement kept many operators
> with decades of commercial Morse service from ever getting a First Class
> license.  However, every maritime Morse station was defined as open to
> public correspondence even if it was on a freighter and never had any
> such traffic.)

An exception was made for several Naval Communication Stations that
handled traffic from civilian vessels - the most prominent one was
Balboa in the Canal Zone.  "Public correspondence" was not limited to
someone walking in to send a telegram.  All messages from vessels
handled through Public Coast stations (RCA, Mackay Radio, etc) were
considered "public correspondence".

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

>From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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Re: [Elecraft] OT: The Colpitts mystery

[Dean L]

We all have similar stories, sad part is, there are extra class licensees
that dont know any more  about oscillators than ohms law or caculating the
length of a half wave dipole.

The ones to "tell the tell" ain't gonna be around forever, few of us left,
ain't no more coming over.
73
Dean K2WW

On Apr 30, 2020 21:43, "Phil Kane"  wrote:

On 4/30/2020 12:58 PM, John Simmons wrote:

> All the broadcast inspections are now contracted out to private companies.

Not exactly.  The FCC started the  Alternate Broadcast Inspection
Program (ABIT)  about the time that I retired from the FCC. in the mid
1990s when there was a push to privatize Federal agency obligations  to
some extent.  The FCC did it for broadcast station inspections, ship
station safety inspections, and resolution of harmful interference.

ABIT is a voluntary program under the management of the various state
broadcasters' associations that contract with individuals to make
compliance inspections of broadcast stations.  The station pays the
association a fixed fee, and the association pays the inspector.  I
contracted with the California association from 1996 until 1999 and
traveled all over the state.

Notification of passing an ABIT inspection was sent to the FCC but
failures were not so reported.  I don't know if that is still done.
Such passing was regarded as "insulation" from FCC inspection for three
years but the FCC still has the obligation to inspect broadcast stations
both on a random basis for compliance with specific programs such as
tower lighting and EAS compliance or if a complaint has been filed that
bears on rule compliance, technical and otherwise.  --


73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

>From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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Re: [Elecraft] OT: The Colpitts mystery

[Josh Fiden]

The barrier to entry certainly isn’t what it used to be, but that’s probably a 
good thing. If someone gets on the air and has fun (even FT8 hihi), I really 
don’t care if they can recite Ohm’s law or not. When they are interested, it’s 
as easy as picking up a copy of the ARRL Handbook. Doesn’t have to be an oral 
tradition. As long as I can call CQ and get an answer, things aren’t too bad!

73
Josh W6XU
(WN6VUD 1972, WA6VUD 1973)

Sent from my mobile device

> On Apr 30, 2020, at 8:30 PM, Dean L  wrote:
> 
> We all have similar stories, sad part is, there are extra class licensees
> that dont know any more  about oscillators than ohms law or caculating the
> length of a half wave dipole.
> 
> The ones to "tell the tell" ain't gonna be around forever, few of us left,
> ain't no more coming over.
> 73
> Dean K2WW
> 

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Re: [Elecraft] Elecraft K3s, etc. bonding

[Tom Norris NB5Q]

I am reviewing Jim's (K9YC) slides and have gotten to the DC Power Supply
(forget the slide #s) . I currently have a Alinco DM-330MV which supplies
my needs. However, after looking internally and studying the schematics,
there is no way to isolate circuit return (negative) from the chassis case
ground. Unless I had some insulated, plastic grommet type washers that
would hold/isolate the 6 mounting screw heads above (and the threads thru
the PCB holes) the circuit return PCB Trace that physically & electrically
attach the PCB to the chassis. There is an internal  jumper connecting the
DC Neg connector to the chassis but without isolating the circuit board
return traces from the chassis I'm spinning my wheels. If I read Jim's
comments right I just do his slide steps 1 & 2 and accept the chassis
ground on the DC negative connector?
Thanks for any experienced advice.
Tom,
NB5Q

On Fri, Apr 24, 2020, 10:08 Edward R Cole  wrote:

> Interesting statement.  How did you determine this?
>
> I brought home from work my professional service monitor and checked
> my K3 (SN-4340) s-meter.  Except from S0-S1 all other steps were
> exactly 6-dB.  S9 = -73 dBm as advertised.  I didn't bother much
> measuring above S9 so cannot comment on linearity in that region.
>
> I also measured both K3 and KX3 preamps on ON/OFF on 50 & 28 MHz:
> http://www.kl7uw.com/HF.htm
>
> Note K3 sensitivity using -73 dBm on 50-MHz with internal preamp off
> was S8 and S9+5 with internal preamp on.  This was using my XG3 as
> signal source so it might be slightly inaccurate (+/- 1 dB).  I
> checked the XG3 with my mw power meter for accurate output at 0
> dBm.  Subsequent to these measurements Elecraft came out with the PR6
> to help K3 sensitivity on 10m & 6m and I have not checked whether
> that effects s-meter readings (probably).
>
> You might note that I tested 50-MHz sensitivity using an ARR Gasfet
> preamp that has 24-dB gain.  It raises baseline noise due to the gain
> but I use it for 6m eme.  Slightly better than the PR6, but I use
> just the PR6 for non-eme use.  Built-in bypass connectors on the PR6
> make using the ARR easy to switch in/out.
>
> 73, Ed - KL7UW
>
> Date: Fri, 24 Apr 2020 07:48:58 -0400
> From: John Stengrevics 
> To: Morgan Bailey 
> Cc: Elecraft@mailman.qth.net
> Subject: Re: [Elecraft] K4 S-meter characteristics
> Message-ID: <7373a874-0e11-493c-b404-4315ef3af...@comcast.net>
> Content-Type: text/plain;   charset=utf-8
>
> Agree completely.  I find all S meters to be totally inaccurate and
> next to useless, including my K3S?.
>
>
> 73, Ed - KL7UW
>http://www.kl7uw.com
> Dubus-NA Business mail:
>dubus...@gmail.com
> __
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>
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Re: [Elecraft] New Mystery: Copying groups vs plain language text (Rather OT)

[Victor Rosenthal 4X6GP]

Finkleman's keys in New York were like that, too. I remember trying to 
adjust mine. He must have used a pipe wrench to tighten them down.


73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/
On 01/05/2020 5:30, Fred Jensen wrote:
The 2T and Extra were both pencil/paper copy and J-28 screwed to the 
desk with ungodly wide spacing ... not to be adjusted by examinees. [:-)

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Re: [Elecraft] [K3S] intermittent RF path interruption

[Ben Gelb]

And now the exciting conclusion

I decided the most likely spot for the problem to exist was in the T/R
switching circuit in the KPA3A. Schematic on pg. 46 of
https://ftp.elecraft.com/K3S/Manuals%20Downloads/E740323%20K3s%20Schematic%20Files.pdf.

I removed the KPA3A to take some pictures and figure out how to probe
some points of interest, then re-installed it, and took following
measurements:

Drain of Q4 - 0.25V during RX, 122V during TX
Drain of Q6 - 13.7V during RX, 0.24V during TX

... so far seems reasonable ...

Measured both sides of L3 and saw 7.42V during RX. Also seems reasonable.
Then measured both sides of L1 and saw that it appeared to be floating... h.

L1 and L3 should basically see identical voltages during RX. L1 should
not be floating. This means that there's no DC voltage being applied
to D2 or D5 anode. That would mean no connection from antenna input to
either PA output or RX path. Fits the problem description.

I took the KPA3A back out again and did some continuity checking.
Shortly I was able to discover that one of the ends of R5 (facing L1)
had a failed solder joint to the PCB. When I touched it with the
probe, the bad end actually came completely free and lifted up off of
the PCB. After starting at it for another minute, I realized that
there is a mismatch between the component package size and the
footprint on the PCB. The pad spacing on the PCB is too narrow, and
even when perfectly centered, there is almost no overlap of the
package pins on the resistor and the solder pads that it is supposed
to attach to. This is also true of R6 and R12 (though they seem to be
connected, at least for now - though notably R12 has a green wire
attached to one end).

This seems like an assembly defect. Doesn't seem very surprising that
with a poor mechanical connection that the solder joint would not hang
on. Maybe it can (or already has been in a later run?) be corrected by
selecting a resistor that has a package that matches the PCB
footprint? Seems likely to me that more KPA3As out there would fail
similarly.

I noted by contrast that R18 uses the same package as the R5, R6 and
R12 components, but appears to have a PCB footprint that correctly
aligns with the component.

Anyhow, I removed R5 and soldered it back on (turning it at a slight
angle, and borrowing the nearby pad of C17 to ensure it had a good
solder connection). Now all seems to be well again. Hear lots of
signals on RX w/ amp inline an make power out on TX. Hooray!

Here are a few pix of the adventure. Hopefully they might be helpful
to someone else.
https://drive.google.com/drive/folders/1kP9cR6HbBqP1Xy35QOOd945Bm2KgYW7T

73,
Ben N1VF

On Thu, Apr 30, 2020 at 8:07 AM Ben Gelb  wrote:
>
> I realized that the "Tune" wattage was set high enough to always
> switch the PA in, even when the power was dialed down to <12W.
>
> With that corrected, I now see consistent behavior.
>
> When KPA3 gets into "bad" state, I see no power out and hear no signal
> on receive. Dialing the power down to <12W results in the "clack" of
> the KPA3 bypass relays and immediately restores operation (albeit at
> QRP levels). Dialing the power up and down across the 12W mark makes
> the receive go in and out (no receive w/ KPA3 inline). Turning power
> on and off does not clear the fault - still persists after it comes
> back up. It does eventually resolve itself though and operate normally
> for a while. But have yet to determine a reliable means to "fix" it on
> demand.
>
> But it is clearly a problem in the KPA3 and not the base K3S, since
> all is cured once the KPA3 is bypassed.
>
> I have now reproduced this on multiple HF bands as well, so not just a
> six meter problem.
>
> I started digging into the schematics. T/R circuit in the KPA3 seems
> like the obvious place to start. Though I can't really see how a
> single component failure in there would cause what I'm describing (in
> particular the "memory" effect that causes the problem to manifest for
> a while and then go away).
>
> I probed the 7T and 7R voltages on connector P68A (easily accessible
> w/ top lid removed from rig). Looks fine - about 6V on either when in
> TX or RX, respectively, and ~0.3V when complemented. Also confirmed 5V
> is present on appropriate pins of P68A and 13.8V is present on P68B.
>
> I'd like to probe further on the PA board (while installed, so can see
> what is going on), but while there are many exposed vias visible with
> the K3S lid off, the silkscreen side is not visible when the module is
> installed. So its hard to figure out what to probe. Does anyone have
> access to board layout images, or otherwise a guide to what to
> probepoints are available on the heatsink side (which faces up when
> module installed) of the PCB? If not I suppose next step is to pull
> the board out and try to map it out manually when I have a bit more
> time, but hoping to save that step.
>
> For reference, schematic of interest is on pg. 46, here:
> https://ftp.elecraft.com

Re: [Elecraft] [K3S] intermittent RF path interruption

[donovanf]

Excellent detective work and documentation Ben! 


73 
Frank 
W3LPL 

- Original Message -

From: "Ben Gelb"  
To: "Benjamin Gelb"  
Cc: elecraft@mailman.qth.net 
Sent: Friday, May 1, 2020 5:19:43 AM 
Subject: Re: [Elecraft] [K3S] intermittent RF path interruption 

And now the exciting conclusion 

I decided the most likely spot for the problem to exist was in the T/R 
switching circuit in the KPA3A. Schematic on pg. 46 of 
https://ftp.elecraft.com/K3S/Manuals%20Downloads/E740323%20K3s%20Schematic%20Files.pdf.
 

I removed the KPA3A to take some pictures and figure out how to probe 
some points of interest, then re-installed it, and took following 
measurements: 

Drain of Q4 - 0.25V during RX, 122V during TX 
Drain of Q6 - 13.7V during RX, 0.24V during TX 

... so far seems reasonable ... 

Measured both sides of L3 and saw 7.42V during RX. Also seems reasonable. 
Then measured both sides of L1 and saw that it appeared to be floating... 
h. 

L1 and L3 should basically see identical voltages during RX. L1 should 
not be floating. This means that there's no DC voltage being applied 
to D2 or D5 anode. That would mean no connection from antenna input to 
either PA output or RX path. Fits the problem description. 

I took the KPA3A back out again and did some continuity checking. 
Shortly I was able to discover that one of the ends of R5 (facing L1) 
had a failed solder joint to the PCB. When I touched it with the 
probe, the bad end actually came completely free and lifted up off of 
the PCB. After starting at it for another minute, I realized that 
there is a mismatch between the component package size and the 
footprint on the PCB. The pad spacing on the PCB is too narrow, and 
even when perfectly centered, there is almost no overlap of the 
package pins on the resistor and the solder pads that it is supposed 
to attach to. This is also true of R6 and R12 (though they seem to be 
connected, at least for now - though notably R12 has a green wire 
attached to one end). 

This seems like an assembly defect. Doesn't seem very surprising that 
with a poor mechanical connection that the solder joint would not hang 
on. Maybe it can (or already has been in a later run?) be corrected by 
selecting a resistor that has a package that matches the PCB 
footprint? Seems likely to me that more KPA3As out there would fail 
similarly. 

I noted by contrast that R18 uses the same package as the R5, R6 and 
R12 components, but appears to have a PCB footprint that correctly 
aligns with the component. 

Anyhow, I removed R5 and soldered it back on (turning it at a slight 
angle, and borrowing the nearby pad of C17 to ensure it had a good 
solder connection). Now all seems to be well again. Hear lots of 
signals on RX w/ amp inline an make power out on TX. Hooray! 

Here are a few pix of the adventure. Hopefully they might be helpful 
to someone else. 
https://drive.google.com/drive/folders/1kP9cR6HbBqP1Xy35QOOd945Bm2KgYW7T 

73, 
Ben N1VF 

On Thu, Apr 30, 2020 at 8:07 AM Ben Gelb  wrote: 
> 
> I realized that the "Tune" wattage was set high enough to always 
> switch the PA in, even when the power was dialed down to <12W. 
> 
> With that corrected, I now see consistent behavior. 
> 
> When KPA3 gets into "bad" state, I see no power out and hear no signal 
> on receive. Dialing the power down to <12W results in the "clack" of 
> the KPA3 bypass relays and immediately restores operation (albeit at 
> QRP levels). Dialing the power up and down across the 12W mark makes 
> the receive go in and out (no receive w/ KPA3 inline). Turning power 
> on and off does not clear the fault - still persists after it comes 
> back up. It does eventually resolve itself though and operate normally 
> for a while. But have yet to determine a reliable means to "fix" it on 
> demand. 
> 
> But it is clearly a problem in the KPA3 and not the base K3S, since 
> all is cured once the KPA3 is bypassed. 
> 
> I have now reproduced this on multiple HF bands as well, so not just a 
> six meter problem. 
> 
> I started digging into the schematics. T/R circuit in the KPA3 seems 
> like the obvious place to start. Though I can't really see how a 
> single component failure in there would cause what I'm describing (in 
> particular the "memory" effect that causes the problem to manifest for 
> a while and then go away). 
> 
> I probed the 7T and 7R voltages on connector P68A (easily accessible 
> w/ top lid removed from rig). Looks fine - about 6V on either when in 
> TX or RX, respectively, and ~0.3V when complemented. Also confirmed 5V 
> is present on appropriate pins of P68A and 13.8V is present on P68B. 
> 
> I'd like to probe further on the PA board (while installed, so can see 
> what is going on), but while there are many exposed vias visible with 
> the K3S lid off, the silkscreen side is not visible when the module is 
> installed. So its hard to figure out what to probe. Does anyone have 
> access to board layout images, or oth

Re: [Elecraft] New Mystery: Copying groups vs plain language text (Rather OT)

[Steve Lawrence via Elecraft]

FCC office in lower Manhattan. Finkleman's exam chairs were school desk writing 
arm chairs. The writing surface had grooves everywhere. They were the size of 
the Grand Canyon. You were given a very thin sheet of paper and a dull pencil 
to write your copy. I could barely get the pencil out of a groove to write the 
next letter. Felt deliberate.

73 - Steve WB6RSE



On Apr 30, 2020, at 9:58 PM, Victor Rosenthal 4X6GP  wrote:

Finkleman's keys in New York were like that, too. I remember trying to adjust 
mine. He must have used a pipe wrench to tighten them down.

73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/
On 01/05/2020 5:30, Fred Jensen wrote:
> The 2T and Extra were both pencil/paper copy and J-28 screwed to the desk 
> with ungodly wide spacing ... not to be adjusted by examinees. [:-)

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