[Elecraft] Elecraft CW Net Announcement

[kevinr]

Good Evening,

Please join us tomorrow on:

14050 kHz at 2200z Sunday  (2 PM PST Sunday)
 7047 kHz at z Monday  (4 PM PST Sunday)

73,

   Kevin. KD5ONS

-

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Re: [Elecraft] Reminder: Winter Field Day (WFD) going on right now...

[Michael Blake via Elecraft]

I was doing just that on 40 this afternoon. I felt like a BIG GUN with my 
K3s/KPA500. 

Great fun. 

Michael Blake
k9...@mac.com


> On Jan 26, 2019, at 8:34 PM, Wayne Burdick  wrote:
> 
> Quite a bit of activity right now in WFD, especially 40 m SSB around 7200 
> kHz. If you're not feeling adventurous, just operate from home and sign "1H 
> ". Have fun!
> 
> Wayne
> N6KR
> 
> 
>> On Jan 24, 2019, at 8:01 AM, Wayne Burdick  wrote:
>> 
>> If, like me, you feel like one field day a year is not enough, then by all 
>> means give Winter Field Day a try. This event has been going on for some 
>> time, with growing participation, and in most respects it’s very similar to 
>> the annual ARRL Field Day. (It is NOT a QRP-only event.) 
>> 
>> The exchange is the number of transmitters in your group, plus a class, and 
>> your ARRL section. Classes include indoor, outdoor, and home (I, O, and H). 
>> For example, operating outdoors with my single transmitter, I’ll be signing 
>> “1O SCV” in CW, or on phone, “one oh Santa Clara Valley.”
>> 
>> The contest period is also similar. This year it starts at 1900 UTC on 
>> Saturday and goes through 1900 UTC on Sunday (2 PM U.S. Eastern time). 
>> Specific band segments are designated to help participants find each other. 
>> Given the time of year, I’d expect the low bands to be very active. 
>> 
>> WFD is a great opportunity to throw a wire in the tree and operate from a 
>> picnic table, tent, or RV, or operate from the comfort of home and give the 
>> shivering masses a few well-deserved QSOs. 
>> 
>> For a complete rules, go to winterfieldday.com.
>> 
>> 73,
>> Wayne
>> N6KR
>> 
>> 
>> 
>> 
>> elecraft.com
> 
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[Elecraft] Reminder: Winter Field Day (WFD) going on right now...

[Wayne Burdick]

Quite a bit of activity right now in WFD, especially 40 m SSB around 7200 kHz. 
If you're not feeling adventurous, just operate from home and sign "1H ". Have fun!

Wayne
N6KR


> On Jan 24, 2019, at 8:01 AM, Wayne Burdick  wrote:
> 
> If, like me, you feel like one field day a year is not enough, then by all 
> means give Winter Field Day a try. This event has been going on for some 
> time, with growing participation, and in most respects it’s very similar to 
> the annual ARRL Field Day. (It is NOT a QRP-only event.) 
> 
> The exchange is the number of transmitters in your group, plus a class, and 
> your ARRL section. Classes include indoor, outdoor, and home (I, O, and H). 
> For example, operating outdoors with my single transmitter, I’ll be signing 
> “1O SCV” in CW, or on phone, “one oh Santa Clara Valley.”
> 
> The contest period is also similar. This year it starts at 1900 UTC on 
> Saturday and goes through 1900 UTC on Sunday (2 PM U.S. Eastern time). 
> Specific band segments are designated to help participants find each other. 
> Given the time of year, I’d expect the low bands to be very active. 
> 
> WFD is a great opportunity to throw a wire in the tree and operate from a 
> picnic table, tent, or RV, or operate from the comfort of home and give the 
> shivering masses a few well-deserved QSOs. 
> 
> For a complete rules, go to winterfieldday.com.
> 
> 73,
> Wayne
> N6KR
> 
> 
> 
> 
> elecraft.com

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Re: [Elecraft] HW-16 Re: Latest Elecraft NEWS

[Ken]

You learned to know your rig and when to be careful.  As a teenager,  I 
had a 2700 volt open breadboard power supply.


Ken WA8JXM

On 1/26/19 7:38 PM, John Simmons wrote:
Speaking of 110VAC antenna relays, I reached in the back of my Novice 
rig and touched the bare 110VAC contacts on the antenna relay. Youch! 
I was a little more cautious after that. Bare contacts wouldn't be 
allowed today in commercial gear.

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Re: [Elecraft] HW-16 Re: Latest Elecraft NEWS

[Ken]

Back in those days, Novice class licenses were required to operate with 
crystal control.  You learned to tune at least 10 kc/s (kHz came later) 
each side of your frequency after calling CQ.  Novice segments were on 
80/40 and 15m CW only.  2m AM and CW was also allowed. Rigs in those 
days did not have the calibration and stability to allow Novices to use 
VFO's.  Even upper class licensees needed a secondary standard to check 
their frequency (e.g. a 100 kHz crystal controlled marker.)  Nothing 
like the rigs today where we trust the dial to be very accurate.


Ken WA8JXM

On 1/26/19 9:12 AM, Kevin Anderson via Elecraft wrote:

The transmitter in the radio was CW-only, rock-bound on 80-40-15 meters only 
when barefoot with just the HW-16.  It took the external HG-10 or -10B VFO (or 
similar grid-keyed VFO) to get you flexible transmitting not involving crystals.

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[Elecraft] Halicrafters S-38

[Kidder, George]

The S-38, like many BC receivers at the time, was an "AC/DC" rig, with 
the chassis potentially hot if you weren't careful.  Nearly eliminated 
myself in the basement trying to attach a Q-multiplier to it.  This was 
better than 60 years ago.

George, W3HBM

On 1/26/2019 7:38 PM, John Simmons wrote:
> Speaking of 110VAC antenna relays, I reached in the back of my Novice 
> rig and touched the bare 110VAC contacts on the antenna relay. Youch! I 
> was a little more cautious after that. Bare contacts wouldn't be allowed 
> today in commercial gear.
> 
> 73,
> -John NI0K
> 
>> John Oppenheimer 
>> Saturday, January 26, 2019 4:03 PM
>> Took a look at Heath's HW-16 design. Quite ingenious: Using the PA
>> cathode bypass capacitors and current through a diode to shunt the
>> receiver front end during transmit. Early diode QSK operation. And a
>> neon bulb relaxation oscillator, using grid block keying voltage, for CW
>> sidetone.
>>
>> I enjoy putting vintage stuff on the air for SKN. Heath did not
>> integrating their separates well back in the day, relying on 110V
>> antenna relays. I may have some DX-60A/HG-10B/HR-1680/HS-1681 ideas for
>> next year!
>>
>> John KN5L
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>> Charlie T 
>> Saturday, January 26, 2019 12:53 PM
>> The first of that type was, I believe a Hallicrafters SR-75, which was 
>> quite
>> unique for its day.
>>
>> If I remember correctly, it was basically an S-38 receiver that used the
>> audio output tube as a single stage crystal oscillator & RF out function.
>> Not what you'd call a stellar performer, but it was a first and
>> self-contained in a package which was same size as the S-38.
>>
>> 73, Charlie k3ICH
>>
>>
>>
>>
>> -Original Message-
>> From: elecraft-boun...@mailman.qth.net 
>>  On
>> Behalf Of Kevin Anderson via Elecraft
>> Sent: Saturday, January 26, 2019 9:13 AM
>> To: elecraft@mailman.qth.net
>> Subject: [Elecraft] HW-16 Re: Latest Elecraft NEWS
>>
>> Hopefully not to belabor this too much (or exceed a cutoff on the
>> conversation), the HW-16 was not a transceiver in the modern sense of 
>> shared
>> circuitry throughout, but was a transmitter and receiver in the same 
>> cabinet
>> that shared the same antenna connection and had the necessary cutoff and
>> receiver protections on transmitting. The knob and dial you see is the
>> receiver. The transmitter in the radio was CW-only, rock-bound on 
>> 80-40-15
>> meters only when barefoot with just the HW-16. It took the external HG-10
>> or -10B VFO (or similar grid-keyed VFO) to get you flexible 
>> transmitting not
>> involving crystals. The receiver circuitry was on a circuit board in one
>> half of the case and the transmitter circuitry was point-to-point 
>> wiring in
>> the other half of the cabinet.
>>
>> A used HW-16, joined later by a HG-10B VFO, was my first radio when I got
>> licensed in 1993 and used for a couple of years until it got upscaled 
>> by a
>> used Ten-Tec Century 22.
>>
>> Cheers/73,
>> Kevin, K9IUA (then KB9IUA from 1993 until 1999)
>>
>> ---
>> Kevin Anderson, Dubuque IA USA, K9IUA
>> k9iua (at) yahoo (dot) com
>> ---
>> __
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>> delivered to pin...@erols.com
>>
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>> Kevin Anderson via Elecraft 
>> Saturday, January 26, 2019 8:12 AM
>> Hopefully not to belabor this too much (or exceed a cutoff on the 
>> conversation), the HW-16 was not a transceiver in the modern sense of 
>> shared circuitry throughout, but was a transmitter and receiver in the 
>> same cabinet that shared the same antenna connection and had the 
>> necessary cutoff and receiver protections on transmitting. The knob 
>> and dial you see is the receiver. The transmitter in the radio was 
>> CW-only, rock-bound on 80-40-15 meters only when barefoot 

Re: [Elecraft] HW-16 Re: Latest Elecraft NEWS

[John Simmons]

Speaking of 110VAC antenna relays, I reached in the back of my Novice 
rig and touched the bare 110VAC contacts on the antenna relay. Youch! I 
was a little more cautious after that. Bare contacts wouldn't be allowed 
today in commercial gear.


73,
-John NI0K


John Oppenheimer 
Saturday, January 26, 2019 4:03 PM
Took a look at Heath's HW-16 design. Quite ingenious: Using the PA
cathode bypass capacitors and current through a diode to shunt the
receiver front end during transmit. Early diode QSK operation. And a
neon bulb relaxation oscillator, using grid block keying voltage, for CW
sidetone.

I enjoy putting vintage stuff on the air for SKN. Heath did not
integrating their separates well back in the day, relying on 110V
antenna relays. I may have some DX-60A/HG-10B/HR-1680/HS-1681 ideas for
next year!

John KN5L
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Charlie T 
Saturday, January 26, 2019 12:53 PM
The first of that type was, I believe a Hallicrafters SR-75, which was 
quite

unique for its day.

If I remember correctly, it was basically an S-38 receiver that used the
audio output tube as a single stage crystal oscillator & RF out function.
Not what you'd call a stellar performer, but it was a first and
self-contained in a package which was same size as the S-38.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net 
 On

Behalf Of Kevin Anderson via Elecraft
Sent: Saturday, January 26, 2019 9:13 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] HW-16 Re: Latest Elecraft NEWS

Hopefully not to belabor this too much (or exceed a cutoff on the
conversation), the HW-16 was not a transceiver in the modern sense of 
shared
circuitry throughout, but was a transmitter and receiver in the same 
cabinet

that shared the same antenna connection and had the necessary cutoff and
receiver protections on transmitting. The knob and dial you see is the
receiver. The transmitter in the radio was CW-only, rock-bound on 80-40-15
meters only when barefoot with just the HW-16. It took the external HG-10
or -10B VFO (or similar grid-keyed VFO) to get you flexible 
transmitting not

involving crystals. The receiver circuitry was on a circuit board in one
half of the case and the transmitter circuitry was point-to-point 
wiring in

the other half of the cabinet.

A used HW-16, joined later by a HG-10B VFO, was my first radio when I got
licensed in 1993 and used for a couple of years until it got upscaled by a
used Ten-Tec Century 22.

Cheers/73,
Kevin, K9IUA (then KB9IUA from 1993 until 1999)

---
Kevin Anderson, Dubuque IA USA, K9IUA
k9iua (at) yahoo (dot) com
---
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delivered to pin...@erols.com

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Kevin Anderson via Elecraft 
Saturday, January 26, 2019 8:12 AM
Hopefully not to belabor this too much (or exceed a cutoff on the 
conversation), the HW-16 was not a transceiver in the modern sense of 
shared circuitry throughout, but was a transmitter and receiver in the 
same cabinet that shared the same antenna connection and had the 
necessary cutoff and receiver protections on transmitting. The knob 
and dial you see is the receiver. The transmitter in the radio was 
CW-only, rock-bound on 80-40-15 meters only when barefoot with just 
the HW-16. It took the external HG-10 or -10B VFO (or similar 
grid-keyed VFO) to get you flexible transmitting not involving 
crystals. The receiver circuitry was on a circuit board in one half of 
the case and the transmitter circuitry was point-to-point wiring in 
the other half of the cabinet.


A used HW-16, joined later by a HG-10B VFO, was my first radio when I 
got licensed in 1993 and used for a couple of years until it got 
upscaled by a used Ten-Tec Century 22.


Cheers/73,
Kevin, K9IUA (then KB9IUA from 1993 until 1999)

---
Kevin Anderson, 

Re: [Elecraft] HW-16 Re: Latest Elecraft NEWS

[John Oppenheimer]

Took a look at Heath's HW-16 design. Quite ingenious: Using the PA
cathode bypass capacitors and current through a diode to shunt the
receiver front end during transmit. Early diode QSK operation. And a
neon bulb relaxation oscillator, using grid block keying voltage, for CW
sidetone.

I enjoy putting vintage stuff on the air for SKN. Heath did not
integrating their separates well back in the day, relying on 110V
antenna relays. I may have some DX-60A/HG-10B/HR-1680/HS-1681 ideas for
next year!

John KN5L
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[Elecraft] OT: S-38 / SR-75 trivia

[Ken G Kopp]

In my Novice days many years ago I owned an SR-75.  It
was indeed an S-38 that used the audio output tube (35L6
or 50L6 (?) as a TX oscillator with a plug-in coil that was
reached through an opening in the back cover.  Had no way
to measure the output power, but it wasn't much.

The original S-38 (only) has three slide switches in the
lower left corner of the front panel.  The third switch is for
a diode noise blanker, and only appears on original S-38's.

FWIW …

73!

Ken Kopp - K0PP
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Re: [Elecraft] KAT500/KPA500 - Sanity Check Please

[Jack Brindle via Elecraft]

You may be right on the KPA. This sounds like a TR issue. Call tech support on 
Monday and discuss it with them.
In the mean time, I may be able to help further the diagnosis - use the KPA 
Utility to gather a fault log and send it to me.
I have tools that will parse the info and let me know of any catastrophic 
events that may have occurred.

One other item for your understanding - the KPA almost exclusively looks at 
reflected power, not SWR for its
protection. That means the KPA can withstand relatively high SWR at low power, 
but as output power increases the
actual SWR must come down. As K6KR has explained, The KAT500 does look at SWR, 
and the amount of bypass SWR
that the KAT can handle increases as power drops. This is to protect the 
KAT500’s LC and switching components at higher power.
Thus the max SWR is lower at 1000 watts than at 100 watts.

I was hoping you were incorrect about the KPA500 issue. Your description tells 
me otherwise. Let’s see what we can do to resolve the issue
and get some more countries (and contest QSOs with me among others) in your log.

73!
Jack, W6FB


> On Jan 26, 2019, at 11:10 AM, Kevin der Kinderen  wrote:
> 
> Hi Jack... I hope you can prove me wrong and maybe there's a setup issue.
> 
> The first symptom is, without the amp in line (standby or simply bypassed 
> with a cable) everything works. 
> 
> With the amp in line, sometimes (very rarely) everything works but then all 
> of a sudden the power out of the amp drops to zero and both the radio and the 
> KAT show high SWR. This kind of makes me think the KAT500 is the problem. Why 
> would the KAT500 show high SWR. But...
> 
> In the condition mentioned above but now in receive, when I change the amp 
> from operate to standby the signal strength shown by the receiver changes. In 
> standby, everything looks normal. But in operate even the noise level drops 
> significantly. Oddly, it almost looks like other signals have popped up 
> weakly and distorted (I'm using a Flex so I'm watching the waterfall). 
> Switching the amp back to standby and everything is back to normal again. 
> This makes me think the KPA500 is the problem.
> 
> Maybe I'm wrong but I can't get anything to fail when the amp is out of the 
> circuit and can very rarely get anything to work when the amp is in the 
> circuit. Maybe something to do with the control cables? I'm only using the 
> PTT relay cables between the KAT500 and the amp and the KAT500 and the Flex 
> 6500 (TX1). I followed Elecraft's "High Power Bundle for the Flex 6500" 
> document. If there were something going on with this signal I could see it 
> inhibiting the amp on transmit but on receive?
> 
> Kev
> 
> 
> On Sat, Jan 26, 2019 at 1:53 PM Jack Brindle  > wrote:
> Kevin;
> 
> Why do you think there is a problem with the KPA500? I haven’t seen anything 
> so far that explains that. 
> In addition to the protections the KAT500 provides, the KPA500 has its own 
> set of protections that keep
> it going or place it into a safe state. The KPA can take a lot of abuse 
> before it faults, and it does quite a bit
> to keep itself from being damaged.
> 
> As someone has suggested (I think it was Bob), you should test the KPA500 
> into a dummy load to make sure if there is an issue.
> If something shows up in that situation, then please do raise the issue with 
> support. If you have questions about the KPA500’s
> operation, I should be able not answer them. I suspect your issues are with 
> the setup of the KAT500 and perhaps an understanding
> of its protection mechanisms. Answering those questions should do a lot to 
> get you going.
> 
> One thing of note - the KPA and the KAT do not communicate with each other. 
> If the Key signal is routed through the KAT to the KPA,
> then the KAT will protect the amplifier by disabling the key line into the 
> KPA. Thus it is very important to connect this mechanism (as
> you have done).
> 
> There is some very good expertise on the reflector. I believe that 
> collectively they will be able to get you going.
> 
> By the way, my own setup is similar - the antenna is a 250 foot loop at 35 
> feet fed with about 15 feet of ladder line. The ladder line connects
> to a 1:1balanced to unbalanced transformer (aka balun) that feeds eight feet 
> of RG-213 into the KAT500. It tunes on every HF band
> except 160 meters. NEC analysis and real measurements show that the impedance 
> on 160 is way too low for any match. 
> 
> 73!
> Jack, W6FB
> 
> 
> 
> > On Jan 26, 2019, at 10:22 AM, Kevin der Kinderen  > > wrote:
> > 
> > Hi Bob:
> > 
> > I'm using a very similar setup and forgot to mention the 1:1 current BALUN.
> > The 4:1 is outside. There's about 2 feet of coax to a window feedthrough.
> > Then from the feedthrough to the tuner is the 1:1 BALUN. The antenna is the
> > 80 - 10 from trueladderline.com . Been using 
> > this model for years now.
> > 
> > You say 

Re: [Elecraft] KAT500/KPA500 - Sanity Check Please

[Kevin der Kinderen]

Hi Jack... I hope you can prove me wrong and maybe there's a setup issue.

The first symptom is, without the amp in line (standby or simply bypassed
with a cable) everything works.

With the amp in line, sometimes (very rarely) everything works but then all
of a sudden the power out of the amp drops to zero and both the radio and
the KAT show high SWR. This kind of makes me think the KAT500 is the
problem. Why would the KAT500 show high SWR. But...

In the condition mentioned above but now in receive, when I change the amp
from operate to standby the signal strength shown by the receiver changes.
In standby, everything looks normal. But in operate even the noise level
drops significantly. Oddly, it almost looks like other signals have popped
up weakly and distorted (I'm using a Flex so I'm watching the waterfall).
Switching the amp back to standby and everything is back to normal again.
This makes me think the KPA500 is the problem.

Maybe I'm wrong but I can't get anything to fail when the amp is out of the
circuit and can very rarely get anything to work when the amp is in the
circuit. Maybe something to do with the control cables? I'm only using the
PTT relay cables between the KAT500 and the amp and the KAT500 and the Flex
6500 (TX1). I followed Elecraft's "High Power Bundle for the Flex 6500"
document. If there were something going on with this signal I could see it
inhibiting the amp on transmit but on receive?

Kev


On Sat, Jan 26, 2019 at 1:53 PM Jack Brindle  wrote:

> Kevin;
>
> Why do you think there is a problem with the KPA500? I haven’t seen
> anything so far that explains that.
> In addition to the protections the KAT500 provides, the KPA500 has its own
> set of protections that keep
> it going or place it into a safe state. The KPA can take a lot of abuse
> before it faults, and it does quite a bit
> to keep itself from being damaged.
>
> As someone has suggested (I think it was Bob), you should test the KPA500
> into a dummy load to make sure if there is an issue.
> If something shows up in that situation, then please do raise the issue
> with support. If you have questions about the KPA500’s
> operation, I should be able not answer them. I suspect your issues are
> with the setup of the KAT500 and perhaps an understanding
> of its protection mechanisms. Answering those questions should do a lot to
> get you going.
>
> One thing of note - the KPA and the KAT do not communicate with each
> other. If the Key signal is routed through the KAT to the KPA,
> then the KAT will protect the amplifier by disabling the key line into the
> KPA. Thus it is very important to connect this mechanism (as
> you have done).
>
> There is some very good expertise on the reflector. I believe that
> collectively they will be able to get you going.
>
> By the way, my own setup is similar - the antenna is a 250 foot loop at 35
> feet fed with about 15 feet of ladder line. The ladder line connects
> to a 1:1balanced to unbalanced transformer (aka balun) that feeds eight
> feet of RG-213 into the KAT500. It tunes on every HF band
> except 160 meters. NEC analysis and real measurements show that the
> impedance on 160 is way too low for any match.
>
> 73!
> Jack, W6FB
>
>
>
> > On Jan 26, 2019, at 10:22 AM, Kevin der Kinderen 
> wrote:
> >
> > Hi Bob:
> >
> > I'm using a very similar setup and forgot to mention the 1:1 current
> BALUN.
> > The 4:1 is outside. There's about 2 feet of coax to a window feedthrough.
> > Then from the feedthrough to the tuner is the 1:1 BALUN. The antenna is
> the
> > 80 - 10 from trueladderline.com. Been using this model for years now.
> >
> > You say "The KAT500 is set to automatically switch to BYPASS if the SWR
> is
> > less than 1.3:1.   And it is set to bypass the amp if the SWR is greater
> > than 1.5:1."
> >
> > Maybe I'm confused with the settings. In the KAT500 configuration under
> > VSWR thresholds I have:
> >   Band: All
> >   Amp Key Interrupt: 5.00
> >   Autotune: 1.80
> >   Bypass: 1.3
> >
> > I think this should mean that the amplifier would not be permitted to
> > operate (key interrupt) if the tuner shows 5:1 or greater SWR. I think it
> > means that once the *tuned* SWR drops below 5 the amp will be keyed.
> Should
> > this be set to 1.5:1? If I really did blow the amp (I'm pretty convinced)
> > then, over time, this possibly was the contributing factor.
> >
> > It is my amp that I think has gone bad, not the tuner.
> >
> > So if the problem were caused because I was regularly running into an
> > antenna with >10:1 SWR (as noted by bypass SWR on the Operate tab) then I
> > think the problem would have been with the KAT and not the KPA. Still, I
> am
> > surprised there isn't a setting in the configuration tab that would
> prevent
> > keying the amp when a certain value of bypass VSWR was exceeded. It could
> > have a user setting similar to Amplifier Key Interrupt so that, as
> someone
> > else mentioned, a person could elect to operate in less than ideal
> > 

Re: [Elecraft] KAT500/KPA500 - Sanity Check Please

[Jack Brindle via Elecraft]

Kevin;

Why do you think there is a problem with the KPA500? I haven’t seen anything so 
far that explains that. 
In addition to the protections the KAT500 provides, the KPA500 has its own set 
of protections that keep
it going or place it into a safe state. The KPA can take a lot of abuse before 
it faults, and it does quite a bit
to keep itself from being damaged.

As someone has suggested (I think it was Bob), you should test the KPA500 into 
a dummy load to make sure if there is an issue.
If something shows up in that situation, then please do raise the issue with 
support. If you have questions about the KPA500’s
operation, I should be able not answer them. I suspect your issues are with the 
setup of the KAT500 and perhaps an understanding
of its protection mechanisms. Answering those questions should do a lot to get 
you going.

One thing of note - the KPA and the KAT do not communicate with each other. If 
the Key signal is routed through the KAT to the KPA,
then the KAT will protect the amplifier by disabling the key line into the KPA. 
Thus it is very important to connect this mechanism (as
you have done).

There is some very good expertise on the reflector. I believe that collectively 
they will be able to get you going.

By the way, my own setup is similar - the antenna is a 250 foot loop at 35 feet 
fed with about 15 feet of ladder line. The ladder line connects
to a 1:1balanced to unbalanced transformer (aka balun) that feeds eight feet of 
RG-213 into the KAT500. It tunes on every HF band
except 160 meters. NEC analysis and real measurements show that the impedance 
on 160 is way too low for any match. 

73!
Jack, W6FB



> On Jan 26, 2019, at 10:22 AM, Kevin der Kinderen  wrote:
> 
> Hi Bob:
> 
> I'm using a very similar setup and forgot to mention the 1:1 current BALUN.
> The 4:1 is outside. There's about 2 feet of coax to a window feedthrough.
> Then from the feedthrough to the tuner is the 1:1 BALUN. The antenna is the
> 80 - 10 from trueladderline.com. Been using this model for years now.
> 
> You say "The KAT500 is set to automatically switch to BYPASS if the SWR is
> less than 1.3:1.   And it is set to bypass the amp if the SWR is greater
> than 1.5:1."
> 
> Maybe I'm confused with the settings. In the KAT500 configuration under
> VSWR thresholds I have:
>   Band: All
>   Amp Key Interrupt: 5.00
>   Autotune: 1.80
>   Bypass: 1.3
> 
> I think this should mean that the amplifier would not be permitted to
> operate (key interrupt) if the tuner shows 5:1 or greater SWR. I think it
> means that once the *tuned* SWR drops below 5 the amp will be keyed. Should
> this be set to 1.5:1? If I really did blow the amp (I'm pretty convinced)
> then, over time, this possibly was the contributing factor.
> 
> It is my amp that I think has gone bad, not the tuner.
> 
> So if the problem were caused because I was regularly running into an
> antenna with >10:1 SWR (as noted by bypass SWR on the Operate tab) then I
> think the problem would have been with the KAT and not the KPA. Still, I am
> surprised there isn't a setting in the configuration tab that would prevent
> keying the amp when a certain value of bypass VSWR was exceeded. It could
> have a user setting similar to Amplifier Key Interrupt so that, as someone
> else mentioned, a person could elect to operate in less than ideal
> conditions while a person like me could still have some protection of
> pretty expensive equipment.
> 
> I still think my amp is bad. Once out of the loop everything works well
> barefoot from my rig. The KPA500 tunes just about anything I throw at it
> and I'm hoping at 100 watt or less the 12:1 safety limit is not applicable.
> 
> "If your showing a Bypass SWR of 12:1 then you are outside of the range of
> the KAT500.  You are using the wrong balun or you need to change the 600
> ohm feed line length to attain a better / lower SWR." Here's where my
> misunderstand probably trips me up again. The ladder line fed dipole cut
> for 80 meters should be an all-band antenna as long as I can match the load
> impedance of the antenna to the radio. For the KAT500, this is a max of
> 10:1 at 600 watts. For maybe another manufacturer's tuner (auto or manual)
> higher specs might be available? Or is there a certain point where the
> antenna is just not an antenna? I've got about 10K contacts on this antenna
> along with some DXCC and WAS accomplishments. It also seems to do OK in
> contests.
> 
> The KPA shows the following bypass VSWRs for my antenna:
>   80 12.00
>   40 7.46
>   20 1.63
>   15 4.61
>   10 2.33
> 
> Changing the BALUN to a different ration would probably shift the numbers
> around a bit but not necessarily improve the situation. From these reading,
> technically my 80 meter band (for which the antenna is cut) is unusable
> with the KAT/KPA at full power but the other bands should be fine. As long
> as I fix the setting for the amplifier key interrupt then I should be able
> to reduce the risk to the amp on other 

Re: [Elecraft] HW-16 Re: Latest Elecraft NEWS

[Charlie T]

The first of that type was, I believe a Hallicrafters SR-75, which was quite
unique for its day.

If I remember correctly, it was basically an S-38 receiver that used the
audio output tube as a single stage crystal oscillator & RF out function.
Not what you'd call a stellar performer, but it was a first and
self-contained in a package which was same size as the S-38.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Kevin Anderson via Elecraft
Sent: Saturday, January 26, 2019 9:13 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] HW-16 Re: Latest Elecraft NEWS

Hopefully not to belabor this too much (or exceed a cutoff on the
conversation), the HW-16 was not a transceiver in the modern sense of shared
circuitry throughout, but was a transmitter and receiver in the same cabinet
that shared the same antenna connection and had the necessary cutoff and
receiver protections on transmitting.  The knob and dial you see is the
receiver.  The transmitter in the radio was CW-only, rock-bound on 80-40-15
meters only when barefoot with just the HW-16.  It took the external HG-10
or -10B VFO (or similar grid-keyed VFO) to get you flexible transmitting not
involving crystals.  The receiver circuitry was on a circuit board in one
half of the case and the transmitter circuitry was point-to-point wiring in
the other half of the cabinet. 

A used HW-16, joined later by a HG-10B VFO, was my first radio when I got
licensed in 1993 and used for a couple of years until it got upscaled by a
used Ten-Tec Century 22.

Cheers/73,
Kevin, K9IUA (then KB9IUA from 1993 until 1999)

---
Kevin Anderson, Dubuque IA USA, K9IUA
k9iua (at) yahoo (dot) com
---
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Re: [Elecraft] KAT500/KPA500 - Sanity Check Please

[Andy Durbin]

Thanks Dick.  Info added to my KAT500 notes.

The fault condition you mentioned appears to be fault code 2 -

"Power Above Design Limit for Antenna SWR - Transmitter power exceeds the 
design limit for the unmatched antenna SWR. This power limit varies with the 
SWR of the antenna: 600 watts at 10:1 SWR, 1000 watts at 3:1 SWR."

It would not appear to be applicable for the OP's case since he does not report 
a fault.

No reply expected - enjoy your vacation.

73,
Andy k3wyc



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Re: [Elecraft] KAT500/KPA500 - Sanity Check Please

[Dick Dievendorff]

Andy:

If the RF power is high enough, and the bypass SWR is high enough, the ATU will 
fault and interrupt the amp key line. I’m away from the code right now, but we 
named this fault something like “power too high for bypass SWR”.

This is distinct from another SWR-related fault when the matched SWR, as seen 
by the amp, exceeds a threshold. This is the “amp key interrupt threshold”, and 
you can set that.  Some users want this out of the way, they trust the amp to 
protect itself, so they set this to 99:1. I think it defaults to 3:1.

There are two SWR-related faults, both interrupt the amp key line.  One is 
based on SWR as seen by the amp.  The other is the SWR of the antenna, measured 
with the ATU bypassed, the bypass SWR, with RF power too high.

If the SWR seen by the amp is low enough, the amp doesn’t care what the bypass 
SWR is, as the amp doesn't see that SWR. 

ATU components have voltage and current ratings that might be exceeded if 
higher power is permitted with a difficult load. This is why 10:1 bypass SWR 
can’t be allowed at 1000 watts, even if the SWR seen by the amp is 1.000 to 1.

It is inconvenient (sometimes impossible) and too slow to measure bypass SWR 
every time a tuning solution is recalled.  So this bypass SWR is measured 
during a full search tune and is retained in the stored ATU setting. 

I’m on vacation and we are about to head out, so I’ll need to let this go for a 
while.

73 de Dick, K6KR

> On Jan 26, 2019, at 11:36, Andy Durbin  wrote:
> 
> "The ATU does interrupt the amp key line when the bypass SWR is too high AND 
> there is enough forward power to endanger ATU components. It’s a fault."
> 
> 
> Dick,
> 
> I'd like to understand that a bit better.  Are you saying that, with a tuning 
> solution that gives 1.6:1, and with that tuning solution being active, that 
> the bypass SWR is being used in the logic that controls the interrupt line?
> 
> I would not have expected the bypass SWR to be used in this condition. With 
> the tuner in-line isn't  the instantaneous SWR and reflected power what 
> controls the interrupt?
> 
> In other words - isn't the bypass SWR only a factor if/when the tuner is 
> bypassed?
> 
> Thanks and 73,
> Andy, k3wyc
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Re: [Elecraft] KAT500/KPA500 - Sanity Check Please

[Kevin der Kinderen]

Hi Bob:

I'm using a very similar setup and forgot to mention the 1:1 current BALUN.
The 4:1 is outside. There's about 2 feet of coax to a window feedthrough.
Then from the feedthrough to the tuner is the 1:1 BALUN. The antenna is the
80 - 10 from trueladderline.com. Been using this model for years now.

You say "The KAT500 is set to automatically switch to BYPASS if the SWR is
less than 1.3:1.   And it is set to bypass the amp if the SWR is greater
than 1.5:1."

Maybe I'm confused with the settings. In the KAT500 configuration under
VSWR thresholds I have:
   Band: All
   Amp Key Interrupt: 5.00
   Autotune: 1.80
   Bypass: 1.3

I think this should mean that the amplifier would not be permitted to
operate (key interrupt) if the tuner shows 5:1 or greater SWR. I think it
means that once the *tuned* SWR drops below 5 the amp will be keyed. Should
this be set to 1.5:1? If I really did blow the amp (I'm pretty convinced)
then, over time, this possibly was the contributing factor.

It is my amp that I think has gone bad, not the tuner.

So if the problem were caused because I was regularly running into an
antenna with >10:1 SWR (as noted by bypass SWR on the Operate tab) then I
think the problem would have been with the KAT and not the KPA. Still, I am
surprised there isn't a setting in the configuration tab that would prevent
keying the amp when a certain value of bypass VSWR was exceeded. It could
have a user setting similar to Amplifier Key Interrupt so that, as someone
else mentioned, a person could elect to operate in less than ideal
conditions while a person like me could still have some protection of
pretty expensive equipment.

I still think my amp is bad. Once out of the loop everything works well
barefoot from my rig. The KPA500 tunes just about anything I throw at it
and I'm hoping at 100 watt or less the 12:1 safety limit is not applicable.

"If your showing a Bypass SWR of 12:1 then you are outside of the range of
the KAT500.  You are using the wrong balun or you need to change the 600
ohm feed line length to attain a better / lower SWR." Here's where my
misunderstand probably trips me up again. The ladder line fed dipole cut
for 80 meters should be an all-band antenna as long as I can match the load
impedance of the antenna to the radio. For the KAT500, this is a max of
10:1 at 600 watts. For maybe another manufacturer's tuner (auto or manual)
higher specs might be available? Or is there a certain point where the
antenna is just not an antenna? I've got about 10K contacts on this antenna
along with some DXCC and WAS accomplishments. It also seems to do OK in
contests.

The KPA shows the following bypass VSWRs for my antenna:
   80 12.00
   40 7.46
   20 1.63
   15 4.61
   10 2.33

Changing the BALUN to a different ration would probably shift the numbers
around a bit but not necessarily improve the situation. From these reading,
technically my 80 meter band (for which the antenna is cut) is unusable
with the KAT/KPA at full power but the other bands should be fine. As long
as I fix the setting for the amplifier key interrupt then I should be able
to reduce the risk to the amp on other bands. I have no clue why it was set
to 5.

Thanks for your explanation. It helps a lot.

73,
Kev K4VD

On Sat, Jan 26, 2019 at 10:16 AM Bob McGraw K4TAX 
wrote:

> My station is a K3S, KPA500, KAT500.The antenna is a 250 ft center
> fed wire with 450 window line that runs from the feed point on the
> antenna all the way to the operating position where the 450 line
> terminates into a 1:1 current balun on the shelf just above the amp and
> tuner.  I use a common mode choke between the balun and the KAT500.
> That common mode choke is a model 8232 purchased from The Wireman.   It
> is 18" length of coax with about 75 ferrite beads of #43 material.
> This provides additional common mode rejection not offered by the
> balun.  I can work 160M through 6M with this configuration.
>
> The KAT500 is set to automatically switch to BYPASS if the SWR is less
> than 1.3:1.   And it is set to bypass the amp if the SWR is greater than
> 1.5:1.
>
> A 10:1 SWR basically says the impedance is somewhere between 5 ohms and
> 500 ohms.   In order to attain this you will need to use both, depending
> on band a 1:1 balun or a 4:1 balun as likely with your antenna the
> antenna on 40M presents a Z of 3000 ohms or so. Then the length of the
> feed line is critical as it becomes part of the impedance acting as a
> matching length of line.The "600 ohm" impedance of the line is of
> little importance as you are matching the entire complex load and not
> just the impedance of the line.  Many hams seem to think, incorrectly,
> they need to match the impedance of the feed line.
>
> If your showing a Bypass SWR of 12:1 then you are outside of the range
> of the KAT500.  You are using the wrong balun or you need to change the
> 600 ohm feed line length to attain a better / lower SWR.
>
> The keying line between the KAT500 and KPA500 should 

[Elecraft] KPA500 Assembly Help

[Andy Durbin]

"The instructions call for 3 disks on the bottom and one on top."

I had the same question when I built mine.   I think I put 2 on bottom and 1 on 
top.  Even that is tight for the bolt length.   Elecraft actually has a mod kit 
with a longer bolt and more rubber discs.  I don't know why that is not 
included in the kit.

You should read the Elecraft paper on hum mitigation for more discussion on 
rubber discs and bolt length.  Get it from Elecraft or email me and I'll 
forward it.

Andy, k3wyc


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Re: [Elecraft] KAT500/KPA500 - Sanity Check Please

[Andy Durbin]

"The ATU does interrupt the amp key line when the bypass SWR is too high AND 
there is enough forward power to endanger ATU components. It’s a fault."


Dick,

I'd like to understand that a bit better.  Are you saying that, with a tuning 
solution that gives 1.6:1, and with that tuning solution being active, that the 
bypass SWR is being used in the logic that controls the interrupt line?

I would not have expected the bypass SWR to be used in this condition. With the 
tuner in-line isn't  the instantaneous SWR and reflected power what controls 
the interrupt?

In other words - isn't the bypass SWR only a factor if/when the tuner is 
bypassed?

Thanks and 73,
Andy, k3wyc
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Re: [Elecraft] KPA500 Assembly Help

[Phillip Zminda]

Thanks for quick reply. This is the reason I have always enjoyed owning 
Elecraft products.

73,

Phil N3ZP
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[Elecraft] OT: Yamaha CM500 headset mechanical issues

[Erik Basilier]

This list has discussed replacement of the ear-surrounding pillows. My CM500
is not very old, and the ear pillows are holding up fine. However, I
recently hurt an elbow, and I am temporarily one-handed. While putting on
the headset with one hand, I made one side of the headset catch on one side
of the head while positioning the other side correctly over the ear. Finally
I moved the other side over the ear.  In this awkward operation, gently
performed, somehow the soft headband  was tugged on, and it broke loose at
one end. It seems to be normally fastened by a tiny loop of string, and now
that string is broken. I am sure the force on it was not very great, so
maybe it broke because a defect in manufacturing. I could probably fix the
problem with some replacement string and needle/thread, but that will have
to wait until I am two-handed again. In the meantime I wonder if others have
had the same problem, and if replacement parts are available. Maybe the
headset can be worn comfortably for hours with the soft headband removed?
Maybe some foam taped under the hard/springy headband would work even
better?

A separate issue that has bothered me since day one with the CM500: The
sliding adjustment for head size needs to move every time the headset is put
on. As soon as it is taken off, it slides to the minimum head size position,
and the speakers have to be pulled down to the ear on each side. One of
these days I am bound to try stopping this adjustment moving by applying
rubber bands, tape, etc. Has anyone been though this and found the best and
neatest solution?

Thanks,

73,
Erik K7TV

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Re: [Elecraft] KPA500 Assembly Help

[Bob McGraw K4TAX]

There is NOTHING like getting automatically an answer from the company 
and the person that designed the ampon a Saturday morning!    
Thanks Jack.


73

Bob, K4TAX



On 1/26/2019 10:56 AM, Jack Brindle via Elecraft wrote:

Ah, but you came to the right place to get an Elecraft answer!

Use the two thick ones on the bottom plus one of the thin ones, then use a thin 
one on top. They are meant to reduce vibration, and thus hum when transmitting.
Enjoy your KPA500, and if you have more questions, just ask!

73,
Jack Brindle, W6FB
Elecraft Engineering


On Jan 26, 2019, at 8:52 AM, Phillip Zminda  wrote:

I am nearly done building my KPA500 kit but not clear about one part of 
mounting the transformer. It came with 2 thin rubber disks and 2 thicker ones 
wrapped with the metal disk. The instructions call for 3 disks on the bottom 
and one on top. Do I put 2 thick and one thin on the bottom with a thick one on 
top? It isn’t clear to me from the manual. Since it’s Saturday I wouldn’t 
expect an answer if I called or emailed support Elecraft today.

Thanks,

Phil N3ZP
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Re: [Elecraft] KAT500/KPA500 - Sanity Check Please

[Dick Dievendorff]

Bypass SWR is the SWR of the antenna, measured with the ATU bypassed.

The ATU does interrupt the amp key line when the bypass SWR is too high AND 
there is enough forward power to endanger ATU components. It’s a fault.

At 3:1 bypass SWR the ATU can handle a kilowatt. 

At 10:1 bypass SWR the ATU can handle the full output of a KPA500, but not 1000 
watts.

Some antennas higher than 10:1 SWR can be matched.  But RF forward power needs 
to be reduced a bit. 

But some amazingly poor antennas can do the job if that’s all you have 
available. The ATU shouldn’t stop you from using a bad antenna until the 
combination of power level and high bypass SWR endanger ATU components.

There is another “amp key interrupt” SWR threshold to protect the amp; that’s 
the SWR as seen by the amp, with ATU matching.

73 de Dick, K6KR

> On Jan 26, 2019, at 10:17, Andy Durbin  wrote:
> 
> "Should the key line cables from the KAT500 to the KPA500 and the rig (using 
> a Flex) prevent keying the amp if the SWR exceeds 10:1 automatically?"
> 
> I'd suggest installing and running the KAT500 Utility.   It will give a clear 
> indication of whether the KAT500 is inhibiting the KPA500 key line (Operate 
> tab, others, Amp Key Interrupt) .   To the best of my recollection Bypass 
> VSWR is never used to interrupt the keying line.  However, if you are  
> bypassed, and transmitting with excessive VSWR, then the key line will be 
> interrupted because of the current VSWR.   VSWR thresholds can be set with 
> KAT500 Utility, Configuration tab, VSWR thesholds.
> 
> Andy, k3wyc
> 
> 
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Re: [Elecraft] KPA500 Assembly Help

[Jack Brindle via Elecraft]

Ah, but you came to the right place to get an Elecraft answer! 

Use the two thick ones on the bottom plus one of the thin ones, then use a thin 
one on top. They are meant to reduce vibration, and thus hum when transmitting.
Enjoy your KPA500, and if you have more questions, just ask!

73,
Jack Brindle, W6FB
Elecraft Engineering

> On Jan 26, 2019, at 8:52 AM, Phillip Zminda  wrote:
> 
> I am nearly done building my KPA500 kit but not clear about one part of 
> mounting the transformer. It came with 2 thin rubber disks and 2 thicker ones 
> wrapped with the metal disk. The instructions call for 3 disks on the bottom 
> and one on top. Do I put 2 thick and one thin on the bottom with a thick one 
> on top? It isn’t clear to me from the manual. Since it’s Saturday I wouldn’t 
> expect an answer if I called or emailed support Elecraft today.
> 
> Thanks,
> 
> Phil N3ZP
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[Elecraft] KPA500 Assembly Help

[Phillip Zminda]

I am nearly done building my KPA500 kit but not clear about one part of 
mounting the transformer. It came with 2 thin rubber disks and 2 thicker ones 
wrapped with the metal disk. The instructions call for 3 disks on the bottom 
and one on top. Do I put 2 thick and one thin on the bottom with a thick one on 
top? It isn’t clear to me from the manual. Since it’s Saturday I wouldn’t 
expect an answer if I called or emailed support Elecraft today.

Thanks,

Phil N3ZP
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Re: [Elecraft] KAT500/KPA500 - Sanity Check Please

[Wes]

Not necessarily.  That is true for purely resistive (real) loads, but for 
reactive loads with the same SWR the real part can be much different and may or 
may not be matched even at <10:1.


Wes  N7WS

On 1/26/2019 8:16 AM, Bob McGraw K4TAX wrote:

...

A 10:1 SWR basically says the impedance is somewhere between 5 ohms and 500 
ohms

73

Bob, K4TAX


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[Elecraft] KAT500/KPA500 - Sanity Check Please

[Andy Durbin]

"Should the key line cables from the KAT500 to the KPA500 and the rig (using a 
Flex) prevent keying the amp if the SWR exceeds 10:1 automatically?"

I'd suggest installing and running the KAT500 Utility.   It will give a clear 
indication of whether the KAT500 is inhibiting the KPA500 key line (Operate 
tab, others, Amp Key Interrupt) .   To the best of my recollection Bypass VSWR 
is never used to interrupt the keying line.  However, if you are  bypassed, and 
transmitting with excessive VSWR, then the key line will be interrupted because 
of the current VSWR.   VSWR thresholds can be set with KAT500 Utility, 
Configuration tab, VSWR thesholds.

Andy, k3wyc


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Re: [Elecraft] KAT500/KPA500 - Sanity Check Please

[Bob McGraw K4TAX]

My station is a K3S, KPA500, KAT500.    The antenna is a 250 ft center 
fed wire with 450 window line that runs from the feed point on the 
antenna all the way to the operating position where the 450 line 
terminates into a 1:1 current balun on the shelf just above the amp and 
tuner.  I use a common mode choke between the balun and the KAT500.  
That common mode choke is a model 8232 purchased from The Wireman.   It 
is 18" length of coax with about 75 ferrite beads of #43 material.    
This provides additional common mode rejection not offered by the 
balun.  I can work 160M through 6M with this configuration.


The KAT500 is set to automatically switch to BYPASS if the SWR is less 
than 1.3:1.   And it is set to bypass the amp if the SWR is greater than 
1.5:1.


A 10:1 SWR basically says the impedance is somewhere between 5 ohms and 
500 ohms.   In order to attain this you will need to use both, depending 
on band a 1:1 balun or a 4:1 balun as likely with your antenna the 
antenna on 40M presents a Z of 3000 ohms or so. Then the length of the 
feed line is critical as it becomes part of the impedance acting as a 
matching length of line.    The "600 ohm" impedance of the line is of 
little importance as you are matching the entire complex load and not 
just the impedance of the line.  Many hams seem to think, incorrectly,  
they need to match the impedance of the feed line.


If your showing a Bypass SWR of 12:1 then you are outside of the range 
of the KAT500.  You are using the wrong balun or you need to change the 
600 ohm feed line length to attain a better / lower SWR.


The keying line between the KAT500 and KPA500 should interrupt the PTT 
line if the matched SWR exceeds 1.5:1.  This is a setting defined in the 
KAT500 configuration  by the user and the KAT500 Utility.


The best suggestion,  make changes to the antenna such that the SWR 
falls within the range of the tuner.  As to the amp, connect a 50 dummy 
load to one output of the tuner {you do have one?} and then see how the 
combination of amp and tuner behave.


I'd say the matching range of the KAT500 is the same at 100 watts.   The 
KAT500 manual {page 2} clearly defines the matching ranges and power 
ratings.


73

Bob, K4TAX


On 1/25/2019 10:47 PM, Kevin der Kinderen wrote:

I'm reading the specifications for the KAT500. Typical matching range from
3-30 MHz is 10:1 SWR for 600 watts.

This means that if the KAT500 utility reports "Bypass VSWR" in excess of
10:1 then the KPA500 should not be set to operate.

I'm running a dipole cut for 80 and fed with 600 ohm ladder line as a
multiband antenna. The BALUN is right outside my window. I have the option
of 1:1, 4:1, 9:1 and 12:1 I think. They are DXE brand. My job then is to
pick the right BALUN to provide <10:1 SWR on the bands of interest. I hoped
this would be at least 80-20 if not 80-10.

Not sure which BALUN is plugged in right now but on 80 meters I'm showing a
bypass VSWR of 12.00 and VSWR of 1.6:1. This means I cannot use the KPA500
on 80 regardless of the good match the KAT500 provided.

Should the key line cables from the KAT500 to the KPA500 and the rig (using
a Flex) prevent keying the amp if the SWR exceeds 10:1 automatically?

If I want better than that then I have to find another antenna tuner with a
wider SWR range at  600 watts or a different antenna?

Can anyone guess at the matching range of the KAT500 at 100W?

The thing is... I think I have a dead amp.

Kev K4VD
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Re: [Elecraft] LP-100 software

[N8LP]

There are many alternatives for serial device servers... some software-based
like VSPE which require a PC, and some hardware based like Lantronix, Digi
and many cheap alternatives listed on Amazon. The hardware based ones just
plug into your router at the remote site. Just make sure that the one you
use allows you to specify an alias for the remote IP address unless you have
a static IP address. With dynamic addressing, you need to use a service like
DDNS to correlate your alias to the current dynamic address.

73,
Larry N8LP



--
Sent from: http://elecraft.365791.n2.nabble.com/
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[Elecraft] F/S: Radiosport RS60CF Headset and Heil PR10 mic

[Robert S. McCuskey]

F/S:  RADIOSPORT RS60CF HEADSET with flex-boom Electret condenser mic,
integrated PTT, and two cables for Elecraft K3/K3S allowing choice of using
either the front panel 8-pin Foster jack or rear panel 3.5mm mic and headset
jacks, also included are a foot operated and a hand operated PTT switch, all
in excellent condition, always in non-smoking environment. New cost $578.
Asking  $375 shipped USA.  Also available is HEIL PR10 MICROPHONE PACKAGE
includes PR10 dynamic condenser mic and LB-1 table base with CC-1-XLR-KB 8
pin cable for Elecraft  K3/K3S, excellent condition, always in non-smoking
environment. New cost $317.  Asking  $195 shipped USA. Both, and  now
excessive to my needs since I no longer have my K3.PayPal preferred or
USPS Money Order  PayPal preferred or USPS Money Order.  Pictures can been
seen in my ads on eHam.net.  Bob  W7BV  email: w7bv at comcast dot net .

 

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[Elecraft] HW-16 Re: Latest Elecraft NEWS

[Kevin Anderson via Elecraft]

Hopefully not to belabor this too much (or exceed a cutoff on the 
conversation), the HW-16 was not a transceiver in the modern sense of shared 
circuitry throughout, but was a transmitter and receiver in the same cabinet 
that shared the same antenna connection and had the necessary cutoff and 
receiver protections on transmitting.  The knob and dial you see is the 
receiver.  The transmitter in the radio was CW-only, rock-bound on 80-40-15 
meters only when barefoot with just the HW-16.  It took the external HG-10 or 
-10B VFO (or similar grid-keyed VFO) to get you flexible transmitting not 
involving crystals.  The receiver circuitry was on a circuit board in one half 
of the case and the transmitter circuitry was point-to-point wiring in the 
other half of the cabinet. 

A used HW-16, joined later by a HG-10B VFO, was my first radio when I got 
licensed in 1993 and used for a couple of years until it got upscaled by a used 
Ten-Tec Century 22.

Cheers/73,
Kevin, K9IUA (then KB9IUA from 1993 until 1999)

--- 
Kevin Anderson, Dubuque IA USA, K9IUA 
k9iua (at) yahoo (dot) com 
---
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[Elecraft] K3 with transverter on 144 operating FT8

[volker.de...@t-online.de]

Hello "Elecrafters",
 
When I set the transverter output of the K3 to e.g. 0.4 mW in SSB or CW or 
FM, the output is constant and my output on 2m as well. But when I am 
operating in FT8 mode (WSJT-x latest version, ALC set to 4-5 digits) the 
output can be set to any value BUT starts to increase immediately. Did 
anyone notice the same behaviour?
 
 TNX
 
Volker
 
DL4ZBG

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Re: [Elecraft] P3IQ

[volker.de...@t-online.de]

Hello Wayne,

are you still planning "to get it out of the box"?

tnx

Volker

DL4ZBG

-Original-Nachricht-
Betreff: Re: [Elecraft] P3IQ
Datum: 2018-07-28T18:45:02+0200
Von: "Wayne Burdick" 
An: "David Gilbert" 

To use the P3’s I/Q signals with software applications, you have to format the 
data like a USB sound card, a standard that is widely used and requires no 
special drivers. A significant amount of firmware is required at the P3 end, 
but we’re definitely looking at this.

In answer to an earlier question: The P3 uses a very high-performance A-to-D 
converter, so the I/Q stream will have excellent dynamic characteristics (once 
we get it out of the box :) 

Wayne
N6KR


> On Jul 28, 2018, at 9:31 AM, David Gilbert  wrote:
> 
> 
> I never understood why the P3 didn't have I/Q outputs in the first place, and 
> I remember pleading for them well before the P3 was finalized.  It never made 
> sense to me to have to have to add additional hardware to make use of other 
> software that used I/Q outputs when the P3 clearly generated them internally.
> 
> Dave   AB7E
> 
> 
> 
> On 7/28/2018 6:30 AM, Wayne Burdick wrote:
>>> The KX3 has I/Q signals (and I/Q outputs) because the I/Q signals are at 
>>> baseband (audio frequency spectrum).  
>>  
>>> The current fact iNice explanation, Don.
>>> 
>>> However, when we do an I/Q add-on for the P3, it will be fully digital 
>>> (like a USB sound card), not analog (like the KX3’s RX I/Q outputs).
>>> 
>>> These digital signals already exist in the P3; we just need to repackage 
>>> them for use with a computer.
>>> 
>>> Wayne
>>> N6KR





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