Re: [Elecraft] KPA500 Switch Off

[Ken Wagner K3IU]

Tom,

And... it (KPA500) also senses the 
frequency of the incoming RF and makes 
sure that it is on the correct band. It 
doesn't need the band data outputs.

73, Ken K3IU

On 8/21/2011 9:16 PM, Don Wilhelm wrote:
> Tom,
>
> The KPA500 reads the band data output of the K3.
>
> If you change bands on the KPA500, it signals the K3 over the AUXBUS,
> and the KPA500 does not change bands immediately, it waits until the K3
> band data outputs indicate the band it is to switch to.
>
> 73,
> Don W3FPR
>
> On 8/21/2011 9:05 PM, n...@n5ge.com wrote:
>> If it doesn't receive on the AUXBUS, why does it change bands when I use the
>> band button on the K3 to change bands? :-)
>>
>> 73,
>> Tom
>> Amateur Radio Operator N5GE
>> ARRL Lifetime Member
>> QCWA Lifetime Member
>>
>>
>> On Sun, 21 Aug 2011 21:42:10 +, iain macdonnell - N6ML
>> wrote:
>>
>>> I agree that it's a good idea, but I wonder if it's feasible... It
>>> appears the the KPA500 is currently only transmitting on the AUXBUS,
>>> not receiving. If it was able to receive, it seems there shouldn't be
>>> a need for BCD band-data in the AUX cable for a K3 (although other
>>> rigs would still need it). So, perhaps there's no way for the KPA500
>>> to "know" when the K3 has been powered off. Details of AUXBUS workings
>>> seem to be somewhat shrouded in mystery..
>>>
>>> 73,
>>>
>>>  ~iain / N6ML
>>>
>>>
>>>
>>> On Sun, Aug 21, 2011 at 9:06 PM, Mike Fatchett W0MU   wrote:
 Good idea!

 On 8/21/2011 2:42 PM, Geoffrey Downs wrote:
> If firmware could give an option for the the KPA500 to switch off 
> automatically when the K3 is switched off (using AUX cable), would people 
> find it convenient? I certainly would.
>
> 73 to all
>
> Geoff
> G3UCK
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 Post: mailto:Elecraft@mailman.qth.net

 This list hosted by: http://www.qsl.net
 Please help support this email list: http://www.qsl.net/donate.html

>>> __
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:Elecraft@mailman.qth.net
>>>
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] KPA500 and SteppIR - interconnection

[dl2fag]

Hello, 

I am planning in the near future to buy the KPA500. I am just thinking how to 
do the interconnection of the different units. So far I understood, that the 
communication between the K3 and the KPA500 is complete. Is there a way to 
implement the SteppIR controller as well - for example that the TX is waiting 
till the STeppIR is correct on the band etc. 

Haven't found any description yet how to connect a K3, KPA500 and the SteppIR 
Controller? 

73

Karl, DL2FAG 



Arcor empfiehlt: Mal über die Karriere nachdenken! Wissenswertes und Nützliches 
finden Sie hierzu unter 
http://www.arcor.de/content/finanzen_job/job_karriere/bewerbung_karriere/ratgeber/
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] 7

[Fredric Serota]

.Life is passing by? Stop it!!!  
http://wave.senigallia.biz/com.friend.php/com.friend.php?dhotmailID=79yz1
  
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Hamfest Demo - 2 K3's on the same table

[Jim Sheldon]

We put on a demo at the KS State ARRL Convention yesterday (Sunday the 21st).  
N3ARU and I had our K3/P3 combo's set up on the same table and hooked up to 
antennas outside the building.  My antenna was a PAC-12 vertical and his was 
made out of a Hamstick mounted on a tripod.  They were spaced approximately 40 
feet apart and his was around the corner from mine, placing a small part of the 
concrete and steel building between the two.

We were both running 100 watts output with me on CW about 14.040 and N3ARU was 
on SSB around 14.250.  I worked KO1U in Haverhill, MA during one demo while 
N3ARU was working another station on SSB.  There was absolutely no observed 
interference between the 2 K3's.  You could see my CW moving the baseline on 
his P3 and his SSB moving mine.  That was as expected since the IF takeoff 
point for the P3 is before any serious filtering anyway so it should show up.  
Neither K3 hit us with the RFI indicator even with the antennas that close.  I 
believe having that corner of the concrete building between them was the reason 
for that.

Word got out pretty quickly and a while later we had a number of people around 
the table asking for further info.  Set it up again - Dwight tuned in a medium 
weak SSB signal on his radio and I tuned around on the CW portion of 20 meters. 
 I heard ES1TU (Adu in Estonia) calling CQ DX on 14.007 so I called him.  
Everyone was listening to Dwight's radio copying the weak SSB signal and never 
noticed I was working Adu on CW on the same band.  The guys that were watching 
me were favorably impressed when ES1TU came back to me.  He gave me only a 449, 
and he was only 559.  I had to have the noise blanker on and set pretty 
aggressively as the ceiling was full of mercury vapor lights!  Dwight left his 
off for the demo so we didn't get any intermod caused by the NB.

All in all, it was a very good demonstration of the K3's capability to handle 
very strong, close-in signals.

The other thing that really got attention was the RTTY and PSK-31 
demonstrations using the CW paddles.  Made a few contacts on RTTY in the SARTG 
contest while it was running.  There were a number of K3 owners that stopped by 
to say hello and sometimes interject their experiences with the K3.  Several 
notables were Nate, N0NB and Jim AC0E.  Lee, K0WA also stopped by and I had to 
wipe the drool off the P3 (Just kidding Lee).  There were a few others that I 
only just met and I apologize for not remembering their calls here.  

Lisa had sent me a big packet of literature to hand out and there are only a 
very small handful left so I'd call it a successful trip for sure.  A number of 
the people that left with the info packets mentioned that they had been 
considering the K3 for a while, but were sure glad to be able to get a good 
demo and some hands-on time.

Had one Kenwood TS-5000 owner loudly proclaiming that his rig was better until 
the demo where I worked ES1TU while the weak SSB qso was being copied on the 
other K3.  Don'cha just love it when a plan comes together?

Jim - W0EB
Park City, KS
K3 #5027
P3 #983

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [K2][KAT2] Is it working as well as can be expected?

[Fred Jensen]

On 8/21/2011 5:35 PM, Don Wilhelm wrote:

> I do not know what the algorithm is (that is a question for Wayne), but
> what I do know is that in the KAT2, there are 2 levels - the normal
> algorithm which is fast to find a match, and the ALT which is slower,
> but will often find a match in difficult times.

Hmmm ... my K2 is currently in its Kopp Kase, but I'll get it out this 
afternoon and see what the ATU is set at.  I don't recall ever changing 
that from the default, but then, I don't remember what we had for dinner 
last night either.  I *do* know that my KAT2 matches just about anything 
long, thin, and conductive, so Chip's should too.

73,

Fred K6DGW
Auburn CA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K2 KNB2 Issue

[Nigel (Nidge) Smith]

Hi Don

Once again thank you for your very quick and concise reply.

I've just returned from work so later this evening I will go over the
board with my loupe and check all the solder joints.  As you say the
next most likely suspect will be a poor inductor connection so I'll
be paying very close attention to the solder and tinning of the
leads.

I will update once the investigation is complete.

Regards

Nidge (G0NIG)

IO93dv

-Original Message- 
From: Don Wilhelm
Sent: Sunday, August 21, 2011 7:38 PM
To: Nigel (Nidge) Smith
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K2 KNB2 Issue

Nidge,

The only components the KNB2 adds to the receive path are in the
bandpass filter.  If you have checked capacitors C3 through C7 for
correct values (and are all in the right places) and well soldered, the
next on the suspect list is L1 and L2.  You say you have checked the
number of turns, so look carefully at the connections on the solder
side.  If you see a ring in the solder around any lead, that indicates
the lead was not well stripped and tinned.  Remove the inductor and
re-tin the lead.

Check to be certain R8 is 120 ohms and R9 is 300 ohms - swapping them
will significantly reduce the signal.

If all seems well with the bandpass filter proper, do a test after
removing capacitors C16 and C8.  With these capacitors removed, the NB
will not function, but it assures that the only components in the signal
path are the bandpass filter components.  If you have come this far and
it still reduces the signal, I would conclude you have a bad capacitor
in the bandpass filter - obtain replacements for capacitors C3 through
C7 on the premise that one is bad.  It is difficult to tell which one
unless you remove them and measure with a capacitance meter.

73,
Don W3FPR

On 8/21/2011 2:14 PM, Nigel (Nidge) Smith wrote:
> Hi All
>
> I have an elderly K2 which had the original KNB2 installed, the one with 
> the two trimming capacitors in the
> bandpass filter circuit.  I ordered the revised board and this was built 
> yesterday.  The issue is that with
> the new board installed the sensitivity is very much reduced which is 
> confirmed using the XG3 at 50uV
> output, with the original board the S-meter indicates S9 where as with the 
> revised board the S-meter
> indicates S3.  I have checked that all the components are in all the right 
> places paying particular
> attention to the capacitor values, that all the inductors have the correct 
> number of windings and that
> there is continuity between each end of the inductionr (0.04Ohm).
>
> Is there anything I can further check?
>
> Test equipment available:
>
> XG3
> 50MHz Oscilloscope
> MFJ Antenna Analyser
> Fluke 77 multimeter with RF probe.
>
> As an added bonus today I was using the K2 at a special event where we had 
> multiple
> stations running.  One of the other stations came on my frequency and 
> transmitted.
> The result (with the KPA100) installed is that I get a constant high 
> current reading
> on the display and SWR of 9.9, I’m presuming that the diodes D16 and D17 
> in the
> KPA100 will have been fried (?)
>
> All recommendations greatly received.
>
> Regards
>
> Nidge (G0NIG)
> 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Hamfest Demo - 2 K3's on the same table

[Nate Bargmann]

Good to see you guys there yesterday.  And you took my remarks in good
humor and in stride, Jim.  ;-)

And, yes, I do believe a P3 is in my future.  I mistakenly thought that
a Linux version of the P3 utility was not released.  The page shows a 24
Aug 2010 version, so the top of the page text should be updated to
reflect that rather than say, "coming soon".

73, de Nate >>

-- 

"The optimist proclaims that we live in the best of all
possible worlds.  The pessimist fears this is true."

Ham radio, Linux, bikes, and more: http://www.n0nb.us
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] 40m low power

[IK4EWX]

Don, thanks.
Can it be that I maked a mistake... 
i will look all toroids and count the turns.
Ian IK4EWX




--
View this message in context: 
http://elecraft.365791.n2.nabble.com/40m-low-power-tp6708066p6712268.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Hamfest Demo - 2 K3's on the same table

[Jim Sheldon]

OOPS, got called to my attention that I mentioned a "Kenwood" FT-5000 and that 
should have been a Yaesu FT-5000 the person said he had.  My bad - not enough 
coffee after a sleepless night.

Jim - W0EB
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Hamfest Demo - 2 K3's on the same table

[Jim Sheldon]

OOPS again, David was a tremendous help with the hamfest/convention table.  I 
got wrapped up in the post on the demo of the K3's selectivity and forgot to 
mention he volunteered to help and brought his K2 and doggone near every 
mini-kit Elecraft produces.  I think the only Mini-Kit he didn't have was an 
XG3 and I had one of those there!

Well done David and THANKS!

Jim - W0EB

> To add to Jim's comments:
>
> I had my Elecraft equipment set up between the two K3/P3s.  On the
> table were a K2/QRP, XV40 & 144 (not connected), W1, DL1, Ngen and
> AF1.
> The minis were all in Dave's plastic cases.  I had Rose's carrying
> case
> for the K2 behind the K2.  While most of the attention was
> certainly on
> the K3s, there were a number of folks who were interested in the
> various
> solder type kits and lower cost radios.  I didn't bring much Rg-58
> with
> me, so I just set up a Hendricks QRP random wire tunner with counter
> poise starting right behind the table and running up the wall a bit
> then
> around the corner of the wall.  I mostly kept the volume down so
> folks
> could better hear the K3s but was able to copy some of the activity
> on
> 20 right along with the big boys.
> The event reenforced my desire to build a K1, and KX1 as well as the
> rest of the test equipment/minis.  Of course KB4WYR has indicated
> the
> there is a KX3 in HER future, so next year we may will have a wider
> range of Elecrafts at the various Kansas area hamfests.
>
> David
> KD0R
>
> On 8/22/2011 10:08 AM, Jim Sheldon wrote:
>> We put on a demo at the KS State ARRL Convention yesterday
>> (Sunday the 21st).  N3ARU and I had our K3/P3 combo's set up on
>> the same table and hooked up to antennas outside the building.
>> My antenna was a PAC-12 vertical and his was made out of a
>> Hamstick mounted on a tripod.  They were spaced approximately 40
>> feet apart and his was around the corner from mine, placing a
>> small part of the concrete and steel building between the two.
>>
>> We were both running 100 watts output with me on CW about 14.040
>> and N3ARU was on SSB around 14.250.  I worked KO1U in Haverhill,
>> MA during one demo while N3ARU was working another station on
>> SSB.  There was absolutely no observed interference between the 2
>> K3's.  You could see my CW moving the baseline on his P3 and his
>> SSB moving mine.  That was as expected since the IF takeoff point
>> for the P3 is before any serious filtering anyway so it should
>> show up.  Neither K3 hit us with the RFI indicator even with the
>> antennas that close.  I believe having that corner of the
>> concrete building between them was the reason for that.
>>
>> Word got out pretty quickly and a while later we had a number of
>> people around the table asking for further info.  Set it up again
>> - Dwight tuned in a medium weak SSB signal on his radio and I
>> tuned around on the CW portion of 20 meters.  I heard ES1TU (Adu
>> in Estonia) calling CQ DX on 14.007 so I called him.  Everyone
>> was listening to Dwight's radio copying the weak SSB signal and
>> never noticed I was working Adu on CW on the same band.  The guys
>> that were watching me were favorably impressed when ES1TU came
>> back to me.  He gave me only a 449, and he was only 559.  I had
>> to have the noise blanker on and set pretty aggressively as the
>> ceiling was full of mercury vapor lights!  Dwight left his off
>> for the demo so we didn't get any intermod caused by the NB.
>>
>> All in all, it was a very good demonstration of the K3's
>> capability to handle very strong, close-in signals.
>>
>> The other thing that really got attention was the RTTY and PSK-31
>> demonstrations using the CW paddles.  Made a few contacts on RTTY
>> in the SARTG contest while it was running.  There were a number
>> of K3 owners that stopped by to say hello and sometimes interject
>> their experiences with the K3.  Several notables were Nate, N0NB
>> and Jim AC0E.  Lee, K0WA also stopped by and I had to wipe the
>> drool off the P3 (Just kidding Lee).  There were a few others
>> that I only just met and I apologize for not remembering their
>> calls here.
>>
>> Lisa had sent me a big packet of literature to hand out and there
>> are only a very small handful left so I'd call it a successful
>> trip for sure.  A number of the people that left with the info
>> packets mentioned that they had been considering the K3 for a
>> while, but were sure glad to be able to get a good demo and some
>> hands-on time.
>>
>> Had one Kenwood TS-5000 owner loudly proclaiming that his rig was
>> better until the demo where I worked ES1TU while the weak SSB qso
>> was being copied on the other K3.  Don'cha just love it when a
>> plan comes together?
>>
>> Jim - W0EB
>> Park City, KS
>> K3 #5027
>> P3 #983
>>
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@ma

[Elecraft] K3: Poor sound on FM

[DL5OCD]

Hello,

from my point of view the K3 is one of the best sounding radios on AM and
SSB.
But i observed a lack of quality on FM-the sound is very thin compared to AM
and SSB.
It seems that the DSP cuts out the range from 400 to 2700Hz (uuh!).
Measured with my analyzer, i can send those graphs to anyone who may
concern.
No matter how the EQ is adjusted.

Any ideas are welcome

73
Michael

--
View this message in context: 
http://elecraft.365791.n2.nabble.com/K3-Poor-sound-on-FM-tp6713097p6713097.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: Poor sound on FM

[Bruce Beford]

Hello Michael.
Two things come to mind-
1.- I assume you have the 13 KHz FM filter installed, and that is the one
you have selected for FM mode.
2.- Have you checked the FM deviation setting in the CONFIG: FM DEV menu
item? It defaults to 5 KHz deviation, which is standard in the USA. I
believe much (or all) of Europe uses a narrow channel spacing, requiring a
lower deviation?

Perhaps one of these suggestions may help you.

Here, my FM receive audio is fine.
73,
Bruce, N1RX



> Hello,
> from my point of view the K3 is one of the best sounding radios on AM and
> SSB.
> But i observed a lack of quality on FM-the sound is very thin compared to
> AM and SSB.
> It seems that the DSP cuts out the range from 400 to 2700Hz (uuh!).
> Measured with my analyzer, i can send those graphs to anyone who may
> concern.
> No matter how the EQ is adjusted.

> Any ideas are welcome

> 73
> Michael




__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: Poor sound on FM

[DL5OCD]

Hello Bruce,
tnx for answer my call, hi !
This behaviour is also in RX-Mode, after a while it is a real pain to listen
to. Especially i miss the lows.

73
Michael

--
View this message in context: 
http://elecraft.365791.n2.nabble.com/K3-Poor-sound-on-FM-tp6713097p6713284.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] KPA500 #337 almost built...

[ke9uw]

All built. Everything I've tried works. Drives very easily compared to the
Hercules II.
...still learning how to set PWR LEVEL per band...
Chuck, KE9UW

--
View this message in context: 
http://elecraft.365791.n2.nabble.com/KPA500-337-almost-built-tp6704216p6713696.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: Poor sound on FM

[Lyle Johnson]

Michael,

Standard CTCSS tones used on FM can range up to 254 Hz.  So, on Tx we 
have to block microphone energy below about 300 Hz.  Likewise, on Rx, we 
have to suppress things below about 300 Hz so you won't hear continuous 
CTCSS tones in the audio.

The DSP filters have some slope, so the audio filter corner frequencies 
must be a bit higher than this.

I'll look into the firmware and see if there is a way to reduce the low 
frequency corner frequency without degrading CTCSS.

Thank you for bringing this to our attention.

73,

Lyle KK7P

> But i observed a lack of quality on FM-the sound is very thin compared to AM
> and SSB.
> It seems that the DSP cuts out the range from 400 to 2700Hz (uuh!).

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: Poor sound on FM

[DL5OCD]

Hello Lyle,
 
that makes sense. Here in Germany CTCSS is not so important, we use the
1750Hz Tone to key up our repeaters. It would be a nice feature if the user
could decide by himself if he want to hear down to 0Hz on FM. Maybe a switch
in the menu could solve this. Or adjustable bw like in other modes. I really
miss the warm sound of my analog gear.
Many thanks for your answer !

73
Michael

--
View this message in context: 
http://elecraft.365791.n2.nabble.com/K3-Poor-sound-on-FM-tp6713097p6713815.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: Poor sound on FM

[Bruce Beford]

Thanks for offering insight in on this, Lyle.
I was just going to suggest that either you or Wayne could perhaps chime in
with some info as to why it is the way it is.

Perhaps in a truly DSP-centric radio like the K3 limitations are different
than in a more traditional analog rig, like the typical VHF/UHF FM mobile
radio.

I generally refer to CTCSS tones as "subaudible" tones as the level is
usually kept low enough as to not be noticeable to the listener except in
the quietest of environs, or if the transmitting station has the subtone
deviation set too high.

Actually, being able to receive down to 100 Hz can be quite helpful. On more
than one occasion, I have been able to assist other operators with
identifying power supply issues by the noticeably 120Hz (60 Hz full wave
rectified) hum on their transmitted signal.

73,
Bruce, N1RX


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: Poor sound on FM

[DL5OCD]

Funny point Bruce !

73

--
View this message in context: 
http://elecraft.365791.n2.nabble.com/K3-Poor-sound-on-FM-tp6713097p6713929.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] K3: CTCSS means "poor" sound on FM

[Ken - K0PP]

As a career two-way radio tech, I'll say that's "just
the way it is".  CTCSS tones must be filtered out of 
both the TX and RX audio path, or the user would
quickly tire of listening to the "hum".  

The TX deviation is set to about 600 Hz, with 750 Hz 
considered to be the maximum that should be used.

CTCSS is almost a necessity on today's multi-user
FM channels, where different user groups are stacked
10+ deep on channels in busy metropolitan areas.

73! Ken Kopp - K0PP
 
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Fw: K3: CTCSS means "poor" sound on FM

[Ken - K0PP]

The second paragraph should read "The CTCSS TX deviation".
The voice deviation is normally set to about 4.5 or 5 KHz.
>
> As a career two-way radio tech, I'll say that's "just
> the way it is".  CTCSS tones must be filtered out of 
> both the TX and RX audio path, or the user would
> quickly tire of listening to the "hum".  
> 
> The TX deviation is set to about 600 Hz, with 750 Hz 
> considered to be the maximum that should be used.
> 
> CTCSS is almost a necessity on today's multi-user
> FM channels, where different user groups are stacked
> 10+ deep on channels in busy metropolitan areas.
> 
> 73! Ken Kopp - K0PP
 
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] A modest proposal...

[Eric Swartz - WA6HHQ, Elecraft]

Guys - We ended this thread yesterday. Several times. Please no more 
posts on this topic. Its been covered in exquisite detail :-)

73, Eric  WA6HHQ
Elecraft Lisa Moderator - Really!

---
www.elecraft.com


On 8/21/2011 3:56 AM, John Ragle wrote:
> An excellent suggestion! Many manufacturers already do this, e.g. my
> Samsung Galaxy Tab comes with a bare piece of "getting started" paper,
> but on-line there is an excellent 144 page (3.2 MB) "users' manual."
>
> I have owned or now own several pieces of Elecraft hardware, and in no
> case have I ever refered to the printed manual (either "Assembly" or
> "Users''"). To me the production of pretty-printed paper manuals is
> twice a nuisance: (1) it is a waste of paper and manufacturers' process
> time, and (2) it is an aggravation for me because of the storage problem
> -- I have manuals of practically every description, size and color, and
> they just take up shelf space.
>
> Storing a manual as a PDF file is a very efficient use of space. My
> "manuals" folder contains 280 files in 51 sub-folders, and takes up only
> 226 MB of disk space. Storage is dirt-cheap these days; I chuckle over
> my first, 5MB, hard drive that was three times the size of my K3, and
> the "disk packs" I carried around to stick in the "washing machines"
> that used them.
>
> Moreover, once one frees oneself from the rather squinty corporate
> attitude of Adobe embodied in "Adobe Acrobat" and uses "after-market"
> PDF editors (some of which are free), one has a quite natural way of
> incorporating the small "erratum/errata" changes that usually accompany
> hardware evolution.
>
> Take note, Elecraft, and join the wave of the twentieth century!
>
> John Ragle -- W1ZI
>
> =
>
> On 8/21/2011 4:14 AM, Alastair Couper wrote:
>> I would like to suggest that the good folks at Elecraft consider making
>> paper manuals an optional item at check out time.
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] Fw: K3: CTCSS means "poor" sound on FM

[Ron D'Eau Claire]

In my old (vacuum tube, xtal controlled) homebrew VHF FM rig, when I turned
the CTCSS off, it also removed the high-pass audio filter that blocked those
tones from the speaker. 

That way I could operate simplex with full-range audio. 

"Customizing" gear isn't quite so easy today - 

73, 

Ron AC7AC


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] A modest proposal...

[Eric Swartz - WA6HHQ, Elecraft]

Hmmm - Typing too fast. I meant 'List' Moderator.

Don't tell Lisa!

73, Eric

---
www.elecraft.com


On 8/22/2011 4:14 PM, Eric Swartz - WA6HHQ, Elecraft wrote:
> Guys - We ended this thread yesterday. Several times. Please no more
> posts on this topic. Its been covered in exquisite detail :-)
>
> 73, Eric  WA6HHQ
> Elecraft Lisa Moderator - Really!
>
> ---
> www.elecraft.com
>
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] K3 AGC attack rate

[Gary Hinson]

Hi Elecrafties.

Is it possible to alter the K3's AGC 'attack rate' (for want of a better
phrase)?  Specifically, I'd quite like to stop the AGC-S on SSB from
dropping the gain so markedly in response to a short noise spike.

73
Gary  ZL2iFB
K2 K3 W2 and mojo

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] KPA500 #337 almost built...

[Jim Brown]

On 8/22/2011 3:00 PM, ke9uw wrote:
> still learning how to set PWR LEVEL per band

There's a K3 menu setting for this.

Jim K9YC
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3: Poor sound on FM

[Jim Brown]

On 8/22/2011 3:25 PM, DL5OCD wrote:
> It would be a nice feature if the user
> could decide by himself if he want to hear down to 0Hz on FM.

Audio down to 0 Hz for speech makes no sense.  The lowest frequencies in 
the human voice are in the 100-200 Hz range (depending on the 
individual), and frequencies below about 500 Hz make almost no 
contribution to communications. There are often noise components below 
500 Hz, like power supply hum, noise in the shack (or in the car, 
including wind noise and road noise) microphone handling noise, and 
breath popping. Not only that, but directional mics EMPHASIZE low 
frequency sounds very close to the sound source (like the mouth, where 
pops are generated).

For all of these reasons, Elecraft's low frequency rolloff is a good 
thing, and there are no good reasons not to do it.  If Elecraft were to 
decide to do a setting for hams in areas that don't use low frequency 
tones, my recommendation would be to move the rolloff down to 150 or 200 
Hz.  Also, Lyle's suggestion to tweak the rolloff to a steeper slope 
could be a good idea.

73, Jim K9YC
Fellow, Audio Engineering Society
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3 AGC attack rate

[Don Wilhelm]

Gary,

There are several AGC parameters that overlap, so I don't know which one 
is creating the most grief for you.
I encourage you to try adjusting the AGC threshold and slope as 
indicated in my "Noisy K3" article on my website www.w3fpr.com.  I would 
think the slope parameter might be effective in reducing the effect of 
your local noise spikes.

It may be better to let the AGC handle the noise spike, but reduce the 
delay so the reduction of gain is shorter.  A bi of experimentation with 
all the AGC parameters may be in order.

73,
Don W3FPR

On 8/22/2011 8:33 PM, Gary Hinson wrote:
> Hi Elecrafties.
>
> Is it possible to alter the K3's AGC 'attack rate' (for want of a better
> phrase)?  Specifically, I'd quite like to stop the AGC-S on SSB from
> dropping the gain so markedly in response to a short noise spike.
>
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] KPA500 #337 almost built...

[ke9uw]

Did it all...works great. Thanks.
Chuck, KE9UW

--
View this message in context: 
http://elecraft.365791.n2.nabble.com/KPA500-337-almost-built-tp6704216p6714450.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3 AGC attack rate

[Guy Olinger K2AV]

Try turning on NB, with LEVEL to T 1-7, 2-7, or 3-7.  Set IF OFF.  I use
that for key clicks on CW and it's marvelous. I leave NB set to 1-7 that way
for use when clicky stuff comes on.  73, Guy

On Mon, Aug 22, 2011 at 9:00 PM, Don Wilhelm  wrote:

> Gary,
>
> There are several AGC parameters that overlap, so I don't know which one
> is creating the most grief for you.
> I encourage you to try adjusting the AGC threshold and slope as
> indicated in my "Noisy K3" article on my website www.w3fpr.com.  I would
> think the slope parameter might be effective in reducing the effect of
> your local noise spikes.
>
> It may be better to let the AGC handle the noise spike, but reduce the
> delay so the reduction of gain is shorter.  A bi of experimentation with
> all the AGC parameters may be in order.
>
> 73,
> Don W3FPR
>
> On 8/22/2011 8:33 PM, Gary Hinson wrote:
> > Hi Elecrafties.
> >
> > Is it possible to alter the K3's AGC 'attack rate' (for want of a better
> > phrase)?  Specifically, I'd quite like to stop the AGC-S on SSB from
> > dropping the gain so markedly in response to a short noise spike.
> >
> >
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] [K3] The "Best" Settings

[Al Lorona]

An opinion: I have a different take on the continual variations of the 
question, 
"Which settings are best?", that pop up frequently on this and any e-mail list.

Surprisingly frequently, some of the advice that gets posted on this list is in 
direct opposition to my personal experience. Whether the topic is AGC settings, 
or the discussion is about maximizing readability and intelligibility, or 
whatever else, it is always startling how much of this advice is contrary to 
what I have found to be optimum. And once 'common knowledge' sets in on a 
particular topic, it's very difficult to give any alternate point of view.

I believe it comes down to this: use whichever settings your ears tell you 
sound 
best. This is going to require that you spend time tweaking controls to see how 
you perceive their effect.

If you can't hear any effect, don't sweat it. It simply means that that control 
doesn't do anything for you and your operating style. There is no need to be 
concerned. You're not necessarily missing out on anything.

For example, if your ears tell you that certain NR settings don't sound good, 
avoid those settings. Or, for instance, if it turns out that you can hear 
better 
with Dual PB than you can with APF, use it instead, no matter what anybody says.

There are a lot of controls on the K3. Spend an evening playing with the AFX. 
If 
one of the settings sounds particularly good, use it, and if not, don't. Do the 
same for RX EQ on another day, and another control on another night. Your ears 
will tell you what's best for you. Trust them.

You may find that you like your SHIFT knob slightly off-center, or your AGC set 
in a way that differs from that of the rest of us. That's okay;  it's why the 
controls are variable! Don't feel bad if you prefer settings outside of the 
'norm'.

We don't all have the same hearing. Some of us have hearing loss; others of us 
have acute sensitivity to certain sounds or radically different notions of what 
'sounds good'. As a result, our receivers' controls are not all going to be at 
the same settings.

Al  W6LX
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] [K3] The "Best" Settings

[Fred Jensen]

Yep.  And if you don't really have the time or energy to tweak 
everything, use the Elecraft factory defaults.  Except for the Rx Eq to 
compensate for being nearly deaf, and setting the Tx Eq to what K9YC 
suggested, I'm pretty much at the defaults, and they seem to work great. 
  I seem to hear a lot more than I can work.

73,

Fred K6DGW
Auburn CA

On 8/22/2011 7:51 PM, Al Lorona wrote:

> I believe it comes down to this: use whichever settings your ears tell you 
> sound
> best. This is going to require that you spend time tweaking controls to see 
> how
> you perceive their effect.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] OT: California QSO Party, 1 & 2 October

[Fred Atchley]

Hams have a lot to celebrate here in California, USA. Of course, everyone
knows its home to Elecraft. However, this year there is a special reason for
the Hams of Oceanside, CA to celebrate: We fought the city to stop an
ordinance that would limit ham antennas to 36 feet plus impose a number of
onerous conditions. Part of our presentation to the city included the 2009
CQP spreadsheet (look under "resources" at www.cqp.org 
) showing how HF operation requires different bands at different times.
This data plus a simple discussion on "ground effects" and its relation to
antenna height won the day. Thanks NCCC.

BTW, I hope all Elecrafters will join in the fun this October 1st & 2nd.

73, Fred, AE6IC

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] K3 AGC attack rate

[Arie Kleingeld PA3A]

Gary,

If you mean that the K3 AGC is too sensitive to a noise spike (I 
understand dropping gain = reducing gain) then switch on the AGC PLS  (= 
set it  to NOR) in the Config, or switch on the NB and experiment with 
the DSP and IF noiseblanking.

73
Arie PA3A

Op 23-8-2011 2:33, Gary Hinson schreef:
> Hi Elecrafties.
>
> Is it possible to alter the K3's AGC 'attack rate' (for want of a better
> phrase)?  Specifically, I'd quite like to stop the AGC-S on SSB from
> dropping the gain so markedly in response to a short noise spike.
>
> 73
> Gary  ZL2iFB
> K2 K3 W2 and mojo
>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html