Re: [Elecraft] OT: LED Light Bulbs

2017-10-23 Thread Jim Brown 

On 10/23/2017 9:35 PM, Dave Cole (NK7Z) wrote:
Currently Dollar Tree has a set of 60W sunbeam LED lights on sale for 
a buck each, and they are dead quiet.  I bought 20 of them today, and 
swapped out every light in the house.  Lost about half an S unit of 
noise.


Thanks for the "heads up," Dave. Will grab some tomorrow!

73, Jim K9YC


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Re: [Elecraft] OT: LED Light Bulbs

2017-10-23 Thread Dave Cole (NK7Z) 

Here is the review of these lights...

https://www.youtube.com/watch?v=zJWssuCGkC8


73s and thanks,
Dave
NK7Z
http://www.nk7z.net

On 10/23/2017 09:35 PM, Dave Cole (NK7Z) wrote:
Currently Dollar Tree has a set of 60W sunbeam LED lights on sale for a 
buck each, and they are dead quiet.  I bought 20 of them today, and 
swapped out every light in the house.  Lost about half an S unit of noise.


73s and thanks,
Dave
NK7Z
http://www.nk7z.net

On 10/23/2017 05:07 PM, Kevin Stover, AC0H wrote:

Maybe I'm just lucky.
Over the last two years I changed out all the incandescent and CFL 
bulbs in this house save two. They are the two 150W Halogen lights I 
have to illuminate the garage/driveway/deck if someone gets too close 
to the house at night.


No RFI detected on a K3 or a K2.

On 10/21/2017 11:51 AM, Bob McGraw K4TAX wrote:
One thing observed at our repeater location is that the CFL was quiet 
until the the transmitter was on the air. It then generated noise.  
In a simplex condition it wouldn't be observed. But in a duplex 
operation or multiple receiver situation it becomes an issue.  
Replaced by a LED with lessened issues.


Bob, K4TAX


Sent from my iPhone


On Oct 21, 2017, at 11:21 AM, Jim - N4ST  wrote:

I have noticed the background noise level growing on the HF bands, 
and for me, especially on 18 Mhz.  I need to declare war on RFI and 
find out what is causing this.  I did carefully checkout some 
Walmart "100 W" LED lights before committing to them and they were 
fine.



_

73,

Jim - N4ST

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bob McGraw K4TAX

Sent: Saturday, October 21, 2017 11:32
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] OT: LED Light Bulbs

Makes me wonder if at all or how frequently production lots are 
evaluated to determine if they are in FCC Part 15 compliance.


Otherwise, the approach "we evaluated one production lot, deemed it 
passed" {a.k.a - I saw it work once, ship it}  and then produced a 
million or so afterwards including those with some engineering 
changes and cost down changes.


Guess I need to power the radio from the tractor battery and dump 
the main breaker in the house to see how much the noise changes.


73

Bob, K4TAX



On 10/21/2017 9:48 AM, w4sc wrote:


An observation:






I too had RFI from LED lights, but the interference was to OTA 
television, Channel 10 (192-198 MHz) DTV.






Not all LED bulbs are created equal in this regard, RFI reduction / 
elimination.  The RFI was generated in this case by the SMPS 
integral to the bulb.






The offending bulb is Utilitech part # 5DG6 (printed on the bulb) 
and is ‘C  UL  US’ listed, purchased from LOWEs.






I have a overhead fixture that was populated with four 800 lumen 
(60w?) bulbs, 2 being Utilitech, and 2 Sylvania OSRAM.






By removing the bulbs and observing channel 10 reception, the 
offending bulb was determined to be the Utilitech.






I replaced the the the Utilitech bulbs with Sylvania OSRAM, and the 
RFI on channel 10 OTA was eliminated.






The Sylvania OSRAM part number used is LED8.5A19/DIM/0/827/G5/RP as 
printed on the box UPC, and were purchased from LOWEs also.






NOTE: There may be interference from Sylvania OSRAM bulbs on other 
frequencies.  LED bulbs are required to meet FCC Part 15 FCC, Class 
B regulations.







YMMV






I have not seen a comprehensive report or article that unveils 
“good” vs “bad” LED bulb manufacturer and part identification as 
far as RFI emissions across the spectrum.







Ben W4SC



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Re: [Elecraft] OT: LED Light Bulbs

2017-10-23 Thread Dave Cole (NK7Z) 
Currently Dollar Tree has a set of 60W sunbeam LED lights on sale for a 
buck each, and they are dead quiet.  I bought 20 of them today, and 
swapped out every light in the house.  Lost about half an S unit of noise.


73s and thanks,
Dave
NK7Z
http://www.nk7z.net

On 10/23/2017 05:07 PM, Kevin Stover, AC0H wrote:

Maybe I'm just lucky.
Over the last two years I changed out all the incandescent and CFL bulbs 
in this house save two. They are the two 150W Halogen lights I have to 
illuminate the garage/driveway/deck if someone gets too close to the 
house at night.


No RFI detected on a K3 or a K2.

On 10/21/2017 11:51 AM, Bob McGraw K4TAX wrote:
One thing observed at our repeater location is that the CFL was quiet 
until the the transmitter was on the air. It then generated noise.  In 
a simplex condition it wouldn't be observed. But in a duplex operation 
or multiple receiver situation it becomes an issue.  Replaced by a LED 
with lessened issues.


Bob, K4TAX


Sent from my iPhone


On Oct 21, 2017, at 11:21 AM, Jim - N4ST  wrote:

I have noticed the background noise level growing on the HF bands, 
and for me, especially on 18 Mhz.  I need to declare war on RFI and 
find out what is causing this.  I did carefully checkout some Walmart 
"100 W" LED lights before committing to them and they were fine.



_

73,

Jim - N4ST

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bob McGraw K4TAX

Sent: Saturday, October 21, 2017 11:32
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] OT: LED Light Bulbs

Makes me wonder if at all or how frequently production lots are 
evaluated to determine if they are in FCC Part 15 compliance.


Otherwise, the approach "we evaluated one production lot, deemed it 
passed" {a.k.a - I saw it work once, ship it}  and then produced a 
million or so afterwards including those with some engineering 
changes and cost down changes.


Guess I need to power the radio from the tractor battery and dump the 
main breaker in the house to see how much the noise changes.


73

Bob, K4TAX



On 10/21/2017 9:48 AM, w4sc wrote:


An observation:






I too had RFI from LED lights, but the interference was to OTA 
television, Channel 10 (192-198 MHz) DTV.






Not all LED bulbs are created equal in this regard, RFI reduction / 
elimination.  The RFI was generated in this case by the SMPS 
integral to the bulb.






The offending bulb is Utilitech part # 5DG6 (printed on the bulb) 
and is ‘C  UL  US’ listed, purchased from LOWEs.






I have a overhead fixture that was populated with four 800 lumen 
(60w?) bulbs, 2 being Utilitech, and 2 Sylvania OSRAM.






By removing the bulbs and observing channel 10 reception, the 
offending bulb was determined to be the Utilitech.






I replaced the the the Utilitech bulbs with Sylvania OSRAM, and the 
RFI on channel 10 OTA was eliminated.






The Sylvania OSRAM part number used is LED8.5A19/DIM/0/827/G5/RP as 
printed on the box UPC, and were purchased from LOWEs also.






NOTE: There may be interference from Sylvania OSRAM bulbs on other 
frequencies.  LED bulbs are required to meet FCC Part 15 FCC, Class 
B regulations.







YMMV






I have not seen a comprehensive report or article that unveils 
“good” vs “bad” LED bulb manufacturer and part identification as far 
as RFI emissions across the spectrum.







Ben W4SC



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Re: [Elecraft] OT: LED Light Bulbs

2017-10-23 Thread Kevin Stover, AC0H 

Maybe I'm just lucky.
Over the last two years I changed out all the incandescent and CFL bulbs 
in this house save two. They are the two 150W Halogen lights I have to 
illuminate the garage/driveway/deck if someone gets too close to the 
house at night.


No RFI detected on a K3 or a K2.

On 10/21/2017 11:51 AM, Bob McGraw K4TAX wrote:

One thing observed at our repeater location is that the CFL was quiet until the 
the transmitter was on the air. It then generated noise.  In a simplex 
condition it wouldn't be observed. But in a duplex operation or multiple 
receiver situation it becomes an issue.  Replaced by a LED with lessened issues.

Bob, K4TAX


Sent from my iPhone


On Oct 21, 2017, at 11:21 AM, Jim - N4ST  wrote:

I have noticed the background noise level growing on the HF bands, and for me, especially 
on 18 Mhz.  I need to declare war on RFI and find out what is causing this.  I did 
carefully checkout some Walmart "100 W" LED lights before committing to them 
and they were fine.


_

73,

Jim - N4ST

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bob McGraw K4TAX
Sent: Saturday, October 21, 2017 11:32
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] OT: LED Light Bulbs

Makes me wonder if at all or how frequently production lots are evaluated to 
determine if they are in FCC Part 15 compliance.

Otherwise, the approach "we evaluated one production lot, deemed it passed" 
{a.k.a - I saw it work once, ship it}  and then produced a million or so afterwards 
including those with some engineering changes and cost down changes.

Guess I need to power the radio from the tractor battery and dump the main 
breaker in the house to see how much the noise changes.

73

Bob, K4TAX



On 10/21/2017 9:48 AM, w4sc wrote:


An observation:







I too had RFI from LED lights, but the interference was to OTA television, 
Channel 10 (192-198 MHz) DTV.







Not all LED bulbs are created equal in this regard, RFI reduction / 
elimination.  The RFI was generated in this case by the SMPS integral to the 
bulb.







The offending bulb is Utilitech part # 5DG6 (printed on the bulb) and is ‘C  UL 
 US’ listed, purchased from LOWEs.







I have a overhead fixture that was populated with four 800 lumen (60w?) bulbs, 
2 being Utilitech, and 2 Sylvania OSRAM.







By removing the bulbs and observing channel 10 reception, the offending bulb 
was determined to be the Utilitech.







I replaced the the the Utilitech bulbs with Sylvania OSRAM, and the RFI on 
channel 10 OTA was eliminated.







The Sylvania OSRAM part number used is LED8.5A19/DIM/0/827/G5/RP as printed on 
the box UPC, and were purchased from LOWEs also.







NOTE: There may be interference from Sylvania OSRAM bulbs on other frequencies. 
 LED bulbs are required to meet FCC Part 15 FCC, Class B regulations.







YMMV







I have not seen a comprehensive report or article that unveils “good” vs “bad” 
LED bulb manufacturer and part identification as far as RFI emissions across 
the spectrum.







Ben W4SC



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--
R. Kevin StoverAC0H
FISTS #11993
SKCC #215
NAQCC #3441
ARRL
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Re: [Elecraft] 3C0L K3 failures

2017-10-23 Thread Howard Stephenson 
Hi Wes,

If you read all the 3C0L updates they have been reporting issues with the
generators and power supplies.
As such I'm guessing they had an over voltage issue and blown one of the
protection diodes on the RF board or in the KPA3
It's too bad, I could of used them for some band fills.

73,

Howard Stephenson  K6IA
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[Elecraft] 3C0L K3 failures

2017-10-23 Thread Wes Stewart 
It's been reported that both K3s on this expedition have failed, although one 
was apparently repaired and they are limping along.


http://www.lral.lv/3c0l_3c1l/index.html

Has anyone heard what the failures were?

Wes  N7WS

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Re: [Elecraft] KX3, FT8, and ALC Question

2017-10-23 Thread Ed G 
That was it Don. I backed way down on the FT8 power slider; I can now adjust
for 4 to 5 ALC bars.
--Ed--


-Original Message-
From: Don Wilhelm [mailto:donw...@embarqmail.com] 
Sent: Monday, October 23, 2017 10:46 AM
To: Ed G; elecraft@mailman.qth.net
Subject: Re: [Elecraft] KX3, FT8, and ALC Question

Ed,

Perhaps you are driving the audio of the KX3 too hard.  The KX3 has an 
"quirk" that it uses for protection from too much audio by reducing the 
input signal drastically.

Try reducing the soundcard 'speaker' slider and the 'power' slider in 
WSJT-X to see if the audio input level to the KX3 is too great.

If that is the problem, then an attenuator - 10k in series with 1k 
between the audio line and shield - in the line should help.

Remember that the MIC input of the KX3 is microphone level, and you are 
likely driving it with 'speaker' level from the soundcard.  Microphone 
level is in the range of 200 to 600 millivolts while the speaker output 
from the soundcard is in the range of 1 to 3 volts - BIG difference.

73,
Don W3FPR

On 10/23/2017 10:30 AM, Ed G wrote:
> Hello,
>   I have my FT8 software set up, and am using an external E-MU 0202
> soundcard. On the KX3, I am using DATA A, with soundcard output going to
the
> KX3 mic input. I have made a couple FT8 contacts.  But the ALC setting
> remains puzzling to me. I have read Don Wilhelm's setup notes for the
> digital modes, but what I am seeing does not agree with the notes. I am
> unable to see any ALC bars. I set power on zero, and essentially set the
> audio input to what sounds good (MIC Gain midscale), then up the power to
10
> watts.
>   If I try to change to the USB mode, the FT8 software switches the
KX3
> back to DATA when I click the FT8 Tune button. That may be fine, but no
> matter what I do or how I set the audio input, I don't ever see any bars
on
> the ALC meter.
>   Must be something simple I am overlooking?


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[Elecraft] For Sale: KX3-F/PX3-F Combo

2017-10-23 Thread Robert Brock 
For sale is my KX3-F and PX3-F combo.  I am the original owner and this
equipment has been used indoors in my home radio room.  All non-smoking.  Am
selling as I am plan to upgrade my station.  All equipment is in perfect
working condition with no electrical or cosmetic issues.  I will sell as a
combination package only.  The KX3 has just been checked by Elecraft
(September, 2017) and is certified as meeting current production
requirements.
-
KX3-F S/N 8579
KXFL3 Roofing Filter
KXAT3 Antenna Tuner
-
PX3-F S/N 1883
- 
Includes all factory connecting cables between the KX3 and PX3, all original
manuals and purchased digital copy of the Fred Cady, KE7X manual, Elecraft
DC Cable and stained/varnished oak stand for the equipment.  $1,550
shipped/insured.  U.S. sales only.  Require USPS money order.  Please
contact off line via email or phone.  Photograph available.

Bob – K9OSC
k9os...@gmail.com
763-951-2870




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Re: [Elecraft] KX3, FT8, and ALC Question

2017-10-23 Thread Bob N3MNT 
Make sure you have the external  sound card selected in the FT8 software as
the input and output device



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Re: [Elecraft] KX3, FT8, and ALC Question

2017-10-23 Thread Don Wilhelm 

Ed,

Perhaps you are driving the audio of the KX3 too hard.  The KX3 has an 
"quirk" that it uses for protection from too much audio by reducing the 
input signal drastically.


Try reducing the soundcard 'speaker' slider and the 'power' slider in 
WSJT-X to see if the audio input level to the KX3 is too great.


If that is the problem, then an attenuator - 10k in series with 1k 
between the audio line and shield - in the line should help.


Remember that the MIC input of the KX3 is microphone level, and you are 
likely driving it with 'speaker' level from the soundcard.  Microphone 
level is in the range of 200 to 600 millivolts while the speaker output 
from the soundcard is in the range of 1 to 3 volts - BIG difference.


73,
Don W3FPR

On 10/23/2017 10:30 AM, Ed G wrote:

Hello,
  I have my FT8 software set up, and am using an external E-MU 0202
soundcard. On the KX3, I am using DATA A, with soundcard output going to the
KX3 mic input. I have made a couple FT8 contacts.  But the ALC setting
remains puzzling to me. I have read Don Wilhelm's setup notes for the
digital modes, but what I am seeing does not agree with the notes. I am
unable to see any ALC bars. I set power on zero, and essentially set the
audio input to what sounds good (MIC Gain midscale), then up the power to 10
watts.
  If I try to change to the USB mode, the FT8 software switches the KX3
back to DATA when I click the FT8 Tune button. That may be fine, but no
matter what I do or how I set the audio input, I don't ever see any bars on
the ALC meter.
  Must be something simple I am overlooking?

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[Elecraft] KX3, FT8, and ALC Question

2017-10-23 Thread Ed G 
Hello,
 I have my FT8 software set up, and am using an external E-MU 0202
soundcard. On the KX3, I am using DATA A, with soundcard output going to the
KX3 mic input. I have made a couple FT8 contacts.  But the ALC setting
remains puzzling to me. I have read Don Wilhelm's setup notes for the
digital modes, but what I am seeing does not agree with the notes. I am
unable to see any ALC bars. I set power on zero, and essentially set the
audio input to what sounds good (MIC Gain midscale), then up the power to 10
watts.
 If I try to change to the USB mode, the FT8 software switches the KX3
back to DATA when I click the FT8 Tune button. That may be fine, but no
matter what I do or how I set the audio input, I don't ever see any bars on
the ALC meter.  
 Must be something simple I am overlooking?
--Ed--



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[Elecraft] OT: LED Light Bulbs

2017-10-23 Thread Dave B via Elecraft 
Hi.

A lot of the LED QRM issues, are caused by the PSU, or "Electronic
Ballast" dropping into a discontinuous conduction mode within it's SMPS
when low voltage halogen lamps are substituted with LED types.  Change
the "Ballast" or re-fit enough Halogen types to keep it happy (and quiet!)

    It's also worth noting, that the EMC regs for unwanted emissions from
electrical/electronic equipment, is designed to protect Broadcast
services, where signal levels are often several 10's of dB greater than
those that we are interested in.

    So, it is quite possible for a fully approved gadget to pass all the
required emissions tests, and still create mayhem on HF in particular.
Also, in the EMC world, for commercial products (sold to the likes of
us) it is assumed that nothing "radiates" directly from itself, as it is
too small a fraction of a wavelength, so only conducted tests are done,
and on artificially loaded leads and cables.

Of course, add such things as long speaker leads, other gadgets, and you
have a situation where a collection of fully approved pieces of (for
example) domestic cable/satellite TV equipment, where each on it's own
is fine, when used together cause trouble.

It's what happens when committees create test spec's.That and
commercial pressure to go the TCF route (Technical Construction File)
where a technical appraisal is done on the design, resulting in a
statement that it is believed no problem will ensue, and again, the
product itself is never tested in practice.  Cost saving pure and simple.

Then you also get creative installers who adapt and modify things,
causing trouble, for example using unscreened leads between a variable
frequency drive inverter, and the motor it powers, purely because
screened power cable is expensive.  Or, they don't correctly ground the
shield rendering it useless.

Similarly, some of the modern LED based traffic signals, should have
screened cables, but don't, purely because of the cost of replacing the
old cabling with new.

And we haven't even touched VDSL and G.Fast used for broadband
connections from fibre enabled cabinets, and the noise they can produce,
or in house Power Line Networking.

Have Fun.

Dave G0WBX.

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