I just took mine to the authorized Fed-X shipping store and let them deal with
it. No hassles. Less expensive than UPS and faster service.
Bob, K4TAX
Sent from my iPhone
> On Sep 25, 2018, at 1:36 PM, Grant Youngman wrote:
>
> The thread started by the gentleman who thought his KX2 might
ke the solution is to get a spare K3s right side panel and
sib-machine it in a way that it can serve as a common panel for both
components
73,Clay, KY5G
Sent from my Verizon, Samsung Galaxy smartphone
Original message ----From: Bob McGraw K4TAX
Date: 9/21/18 16:45 (GMT-06:0
Based on published numbers, the P3 is 6.1" wide, the K3S is 10.7"
wide. As I recall a 19" rack shelf is 16.75". If all is correct, a
real tight fit, I'd say.
73
Bob, K4TAX
On 9/21/2018 4:36 PM, Clay Autery wrote:
I haven't measured lately... Is a K3/P3 width too wide for a single 19" 3
The RX Ant In and RX Ant Out are protected during transmit. As to
protecting the input of the SDR-IQ, make sure you use very good quality
connectors and very good quality coax such that any transmitted RF is
not picked up by leakage into these components. I use Amphenol BNC
connectors and dou
Thanks Wes. I hesitated to un-stack the KPA500 off of the KAT500 and
disconnect all the cables. I suppose I need to look at my
configuration to reduce the likelihood of any damage to the PIN diodes
in the KPA500. Lightning protection is good on the outside of the
house but static disch
I first suggest updating to the most current version of WSJT-X.
On receiving FT8 signals, what is the DT time shown for most received signals?
Should be less than 1 second and typically less than 0.3 seconds. If so there
is nothing wrong with your computer time.
Likely the delay is processi
I didn't find the answer in the manual, so I'll ask here. I do see in
the manual where bleed resistors are applied to the unused antenna
terminals to bleed off static charges. {page 15, Antenna
Selector. etc}
My question, do the relays in the tuner take the center conductor of all
Yes, regardless of how good they look, always snug the PL-259 with a small pair
of Channel Lock pliers. Finger tight is not good enough. Many of our
connectors today are of inferior quality.
Also due to the use of jumpers, the flexing and pulling is prone to damage the
connection between t
Make sure the contacts on the paddle are clean. Drag a business card between
them while applying a bit of pressure.
Also reduce the keyer speed a bit.
I use both a single lever and a dual lever paddle. Timing and rhythm is the key
to a good fist. Roll your fist from side to side as opposed
If it is decoding two characters and not one, this says the sending spacing and
length of each element is inconsistent.
Bob, K4TAX
Sent from my iPhone
> On Sep 16, 2018, at 7:05 PM, Cliff Clark wrote:
>
> I love my KX2, and I thought I would use the TX only CW code to practice,
> but I'm ha
Encoders can be cleaned. I've done it in several radios, several brands. It is
usually necessary to open the radio, remove the encoder. Then carefully open
the encoder, clean the wiper contacts and the stationary contacts with contact
cleaner. These are simply a stepping switch. Only one mov
gt;
> Fred ["Skip"] K6DGW
> Sparks NV DM09dn
> Washoe County
>
>> On 9/14/2018 2:27 PM, Bob McGraw K4TAX wrote:
>> Mine was the first time I transmitted my call with the antenna array aimed
>> at the moon, switched to receive, adjusted the VFO frequency a
Mine was the first time I transmitted my call with the antenna array
aimed at the moon, switched to receive, adjusted the VFO frequency a
bit, and heard my own call come back. Yep, some 2.56 seconds delay, a
frequency shift of about -200 Hz due to Doppler, and from a distance of
239,000 mile
From my AM broadcast days and my pro audio days, yes it is not unusual
to find that a given mike has more positive output than negative output
in terms of the voltage waveform. Thus if phased correctly, and we are
only using one mike, the positive modulation peaks will be greater than
the nega
Should be found on the HDSDR site. I had to install it for my RSP-1 receiver.
Bob, K4TAX
Sent from my iPhone
> On Sep 12, 2018, at 4:32 PM, NOEL POULIN wrote:
>
> Hello,
> I am looking for a dll file, missing here, to be able to use my K3S with THE
> CW SKIMMER AND THE SDR-IQ RECEIVER.
> T
To my knowledge you only need a USB cable like used with a printer to
connect between the USB port on the radio and the USB port on your
computer. In the radio CONFIG menu set the RS232 value to USB. You do
not use the RS-232 port on the radio. See page 18 of the K3S manual.
The remainder
Thanks Fred. I'm familiar with measuring broadcast fields for both
directional and non directional systems. The variances over the seasons
with varying moisture levels in the ground and the difference with and
without vegetation is clearly measurable and predictable. But still the
efficiency
That's one of the reasons I asked the question. Normally antenna efficiency is
measured in an RF anechoic chamber. I'm not aware of one suitable in size for
HF antennas.
Bob, K4TAX
Sent from my iPhone
> On Sep 9, 2018, at 3:52 PM, Jim Brown wrote:
>
>> On 9/9/2018 1:03 PM, Mel Farrer via
How does one measure transmit antenna efficiency?
Bob, K4TAX
Sent from my iPhone
> On Sep 9, 2018, at 2:36 PM, Mel Farrer via Elecraft
> wrote:
>
> Great Don,
> You and I grew up in the same time era..
> Now, I am wiser and have more CRS,Anyway, Here is my take on antennas
>
I've used a separate receive antenna..once. Then I noticed
when I transmitted on my dedicated transmit antenna, I fried the front
end of my receiver. Won't do that again. Of course I was a green
General op at the time and that was in 1960. Since then.well I
chalk everythin
Yes, well most of those are good sounding and..are larger than our radios
on our desks today. Small speakers can be expected to produce small sound.
Small as in acoustic output and limited frequency response. Just laws of
Physics. Don't expect to modify those laws.
Bob, K4TAX
Sent fr
Don't shortchange yourself by looking at only 1 or 2 parameters.
Here's the list. Some items can be upgraded in a K3 to make it almost
to the level of a K3S.
** Ultra low-noise synthesizer for exceptional strong-signal receive
performance and transmit signal purity (KSYN3A)
** USB port–in
Personally having used two different K3 radios and then my K3S, the
difference was enough for me to buy a new K3S. Small or
incrementalnah, very noticeable specially coming from someone
{me} who worked in professional audio and recording studio environment
most of my career. Of course
I have two original K3. Wondering if I missed something. The "S" has
improvements to receive audio? Or is this just referring to the new synthesizer?
Thanks & 73,
Josh W6XU
Sent from my mobile device
On Sep 3, 2018, at 7:24 AM, Bob McGraw K4TAX
Then came along the K3S with its
I had assembled two K3 radios for friends that didn't believe they were
competent to do so. In doing this, I was able to use these radios for a
few weeks. I noted some artifacts regarding the receive audio and
elected not to purchase one for my station at that time.
Then came along the K3S
Here is another good information source on baluns and specifically the
type of material and how it performs under various conditions.
http://www.karinya.net/g3txq/chokes/
As it is said "I have no dog in this fight".
73
Bob, K4TAX
On 9/2/2018 8:28 PM, Bill Frantz wrote:
This is one of the
The value of SWR doesn't really inform us about the load impedance, line
current or line voltage conditions existing.
In the case of a 1.5:1 SWR, the load Z is 75 ohms, with a power of 500
watts the line current is 2.58 amps with a voltage of 193.6 volts.
At the same time a 1.5:1 SWR, the loa
I agree with Don, why not do AFSK and eliminate all the extra hardware
and cables? No one except you will know the difference.
73
Bob, K4TAX
On 8/30/2018 12:20 PM, Don Wilhelm wrote:
Peter,
You will have to gain access to the RS-232 DTR or RTS signals.
If you do not have the P3, you can
Wouldn't taking the headphones off, rotating them 180 degrees and put
them back on do the trick? That way left would be right and right would
be left.
Guess I'm too dense to understand the acoustic phenomenon.
73
Bob, K4TAX
On 8/27/2018 12:36 PM, Jim Rhodes wrote:
A simple DPDT switch sho
I agree with Peter in that many hams use too much RX RF Gain and too
little attenuation. Per one authority on receiver performance, the
optimum receiver performance occurs when the no signal band noise is
about 10 dB above the receiver noise floor. Since we can't adjust the
receiver noise fl
Windows has a mind of its own. It assigns ports as and when needed. Once done
it will keep it until something else changes. Just remember to check if it
doesn't connect in the future.
Bob, K4TAX
Sent from my iPhone
> On Aug 26, 2018, at 7:47 PM, Phil Kane wrote:
>
> Finally got it setup
In regard to filters, see http://www.elecraft.com/K3/Roofing_Filters.htm
for the explanation and justification and application of various
filters. Wayne and Eric have provided excellent real world advice in
this regard.
73
Bob, K4TAX
__
Try to find carbon resistors as newer film resistors may be reactive.
Older carbon resistors have a tendency to migrate upwards in value. Be
sure to check them with a meter.
73
Bob, K4TAX
On 8/26/2018 7:50 AM, Bill Frantz wrote:
For my KX3, I built a dummy load from three 150 ohm 2 watt
Although I have the standard 2.7 kHz filter in my K3S, the 2.8 is
reported to give a little bit better SSB sounding audio. From
experience with another radio, opening up the SSB BW 100 Hz gives a wee
bit better sounding audio. Emphasis on "wee" bit. As to the 2.1 kHz, I
opted for a 1.8 kHz a
While one can measure a dummy load with an ohm meter, this is only the
DC resistance of the resistive element. It does not assure that it is
non-reactive as reactance is an AC component related to frequency.
Dummy loads should appear as 50 ohms at all frequencies within the range
where they
If using a dynamic mike you should not have any connection to pin #6
anyway. So it would make no difference. The BIAS On and Off applies
to the back panel mike connection.
73
Bob, K4TAX
On 8/24/2018 10:53 AM, TL_Netvision wrote:
Hello all,
While trying different front microphones (Dynam
Can't speak for a MAC but you should be using WSJT-X version 1.9.1.
Yes, the K3S should follow the WSJT band/frequency changes. And when
I change frequency or band on my K3S, the WSJT-X software changes
frequency/band accordingly.
I use a single cable between my K3S and computer. This is
The Saved Configuration file is automatically date and time stamped.
Although I don't know of a way to "see what's different", before I go
tampering with any of the values in my K3S, I save a configuration.
That way when and yes I said "when" I get things messed up I can easily
go back to t
More info on the topic. I view the loss of WWV, WWVH and possibly WWVB
to have a major impact on world wide communication technology in many
ways. If WWVB operation is suspended, where would be the reference for
many of our atomic clocks?
73
Bob, K4TAX
The National Institute of Standards
on earth.
73/jeff/ac0c
alpha-charlie-zero-charlie
www.ac0c.com
On 18-Aug-18 7:12 AM, Bob McGraw K4TAX wrote:
I'd say a bit of common mode current on the feed line. I see that
from time to time with my KPA500 on certain bands/antennas.
73
Bob, K4TAX
On 8/17/2018 11:45 PM, Jeff Blaine
I'd say a bit of common mode current on the feed line. I see that
from time to time with my KPA500 on certain bands/antennas.
73
Bob, K4TAX
On 8/17/2018 11:45 PM, Jeff Blaine wrote:
While running the KPA1500 in the SARTG tonight, I noticed that the
temp reading drops about 10C when transm
Yes yes and yes. Amps are designed with the fixed output matching
network chosen for a value of impedance and energy transfer to be at
"rated power". Running any amp at reduced power then does not confirm
to the design of the output matching network and the efficiency
decreases. You aren'
I've said this and measured this for years with tube type amps, where as
I hear hams say they are running reduced power to "save the tubes".
That's HOGWASH. Determine the efficiency at reduced power vs. rated
power. The excessive heat at reduced power has to go somewhere.
I view running
And it does not consider the volume or number of units sold either.
Rather poor constructed survey, in my opinion. More like a high school
popularity contest.
73
Bob, K4TAX
On 8/15/2018 11:07 AM, Peter W2IRT wrote:
Up to 2nd place now, but not a good representative sample. 100 votes for
I did purchase a Gigaware USB to serial converter cable from Radio Shack
as I recall. Loaded the drivers that came on the CD with the
purchase. Spent several hours over several days trying to get the thing
to work. It would almost work but gave me errors or didn't work at all.
Finally th
Does Heil have the settings on their website? I seem to recall they do. That
is a good place to start.
Bob, K4TAX
Sent from my iPhone
> On Aug 14, 2018, at 1:58 PM, Thomas Donohue wrote:
>
> I recently purchased subject mic and will be connecting it to the K3S
> shortly. Before I do that
My solution is very simple. I ignore all calls unless they appear on
my caller ID from my contact list. Likewise on e-mail, my spam filter
gets 99.9% of all of them and they end being sent to the junk folder.
That folder gets emptied every 12 hrs. The one or two that get through,
also get
I use the SWITCHED 12V source from my K3S. When I turn on the radio the
KAT500 powers up at the same time. This is per page 14, Operation in
the KAT500 manual. "Apply power to the KAT500 before or at the same
time you turn the K3/K3S on."
73
Bob, K4TAX
On 8/13/2018 9:38 PM, markmus...@
Yes, I find that the number of decodes is less this afternoon than last
evening. Yes, we've worked twice, last evening and again this
afternoon. Glad you have things going. I'm running my K3S at about
30 watts driving the KPA500 to 450 watts. The antenna is a 4 ele
HyGain at 55 ft fed w
Do understand in the K3 & K3S operation the actual output power is
controlled by the PWR setting on the radio. The PWR setting on the
WSJT-X screen is actually audio level. This should be adjusted about
mid scale for both TUNE and TRANSMIT. The radio Line Gain will then
allow you to adjust t
That is the better way to handle power for the KAT500.
73
Bob, K4TAX
On 8/12/2018 8:57 AM, Ralph S. Turk wrote:
Can one use the 12vdc of the K3 to power the KAT 500? The K3 has the latest
update for the 12 dc.
Ralph, W7HSG/AFA9RT
As a long time MS advocate, "more power.more antenna". I run
500 watts to a 4 element HyGain Yagi at 55 ft.
You can reduce "F Tol to 100 Hz" to reduce the burden on the CPU, and
use Deep Decode. The software will configure the radio correctly. It
may set the radio to split if and as
Also there are applications that will remove scraps of updates, faulty
files, excessive Registry entries and such. Sounds like time to do
some in-depth computer house cleaning. Also, a virus or malware will
consume resources and really bog down a computer basically doing nothing.
I use a
I would configure the station power such that the tuner is powered from the
switched source on the radio. Thus the power supply is on first and then the
radio is turned on and powers the tuner at the same time.
Bob, K4TAX
Sent from my iPhone
> On Aug 5, 2018, at 6:02 PM, Don Wilhelm wrote
I downloaded my radio memories to the Elecraft Frequency editor and
saved the file. It opens nicely in EXCEL and can be edited accordingly
as it is .XML file format.
73
Bob, K4TAX
On 8/5/2018 8:30 AM, John Newgas wrote:
I have a KX3 not a KX2, but the Memory editor by DL2RUM works on an M
With AFX utilized there is phase shift between left and right audio
channels. I don't seem to think it is constant phase shift, therefore
changes with frequency. This enhances the bi-aural effect of AFX. In
the hearing, thus two sources of the same signal, the leading phase will
be the lea
Listening on 50.125 +/- 10 kHz beaming NW from EM76.
73
Bob, K4TAX
On 8/2/2018 11:35 AM, Richard AG5M via Elecraft wrote:
Got the word, I'm up on 6m, but absolutely nothing being heard up here in south
eastern WA. Bummer...
73, Richard AG5M
On T
NV DM09dn
> Washoe County
>
>> On 7/31/2018 7:21 AM, Bob McGraw K4TAX wrote:
>> Otherwise a science project with unknown results.
>>
>> Bob, K4TAX
>>
>>
>> Sent from my iPhone
>>
>>> On Jul 31, 2018, at 7:59 AM, Clay Autery wrot
Otherwise a science project with unknown results.
Bob, K4TAX
Sent from my iPhone
> On Jul 31, 2018, at 7:59 AM, Clay Autery wrote:
>
> Every successful project begins with a thorough analysis of the REQUIREMENTS
> and CONDITIONS.
> Proper design seeks to satisfy the entries on these lists w
I run my amp on 240 VAC with the yellow tap as supplied from the
factory. No hum or buzz when operating 550 watts output. Drive on 6M
is 30 watts. SWR is 1.2:1 or better. Other bands the same. The
KAT500 memory is "trained" every 50 kHz on all band below 10M. In
fact with my ear again
Yes, the K3S SWR display can show a 1.0:1 value. But in my case, it
does not exactly agree with another instrument in the feed line system.
As to why you are showing two different values, as minute as they
are I might add, you are measuring 2 different places in the feed line.
In my thi
I'm using the SDR Play / RSP1 with HDSDR software. With the RSP1
connected to the IF OUT I find that nothing else is required.
Configured in the software, via OmniRig for Sync to Rig and Sync from
Rig, I have full point and click mouse control. Click on a signal and
the radio goes there.
Might run the K3 at 75 to 100 watts without the KPA500 and see if it
shuts down.
Those temperature numbers, are they the K3 or the KPA500? You might
lift the top of the K3 and remove the KPA3 100 watt amp and observe both
the male and female connectors. Look for any signs of heating or
d
Darn auto correct!!! Heil not here. G!
Bob, K4TAX
Sent from my iPhone
> On Jul 25, 2018, at 8:32 AM, Bob McGraw K4TAX wrote:
>
> Here has them available. You can get the parts and build one. Or it should
> plug in direct on the back of the K3. That is my choice.
>
Here has them available. You can get the parts and build one. Or it should
plug in direct on the back of the K3. That is my choice.
Bob, K4TAX
Sent from my iPhone
> On Jul 25, 2018, at 8:24 AM, Gary Smith wrote:
>
> I have my father's Heil headsets and he
> had an Icom adapter for it. I'
I agree with John on this. Heil is good about warranty and quick
turn-a-round. If one is concerned about being without a headset, then
I suggest obtaining/buying a CM500 as a spare while the ProSet is away
for repair.
73
Bob, K4TAX
On 7/25/2018 6:06 AM, j...@kk9a.com wrote:
I would con
As I recall, there were some original issues with the connector pins
associated with the KPA-3 PA amp. I recall these were later changed
to gold plated pins. Your description seems to indicate the KPA-3 100
watt amp is dropping off line, leaving only the 10 watt driver stage on
line.
73
After much investigation and consideration I elected to purchase the
KPA-500/F. Since I have the K3S and now the KAT-500, I've "trained"
the KAT-500 for the antennas and frequencies on each band. With the VFO
tracking, I dial the frequency and everything follows.
Specifically the KPA-500 I
One option in my thinking is to use the coax switch on the input of the
KPA1500. Then one can switch between the K3 and K2/100 and not need a
high power switch. The KPA1500 in standby is then in bypass mode and
one doesn't have concerns about switching high power.
Oh what the heck do I know.
How are you handling the PTT? Direct from the KPA-500 to the TS-2000
via the PA Key on the amp or by the KPA-500 Aux connector pin #10.
Check cables as one of those commands is being dropped.
Add a ferrite choke on the PTT line if using the PA Key command
method. Or, reduce drive power
Well I really don't have an issue with mine but I did search and learn
about using a Sorbothane damper. Interesting stuff and related
applications.
73
Bob, K4TAX
On 7/19/2018 9:01 AM, Clay Autery wrote:
Y'all are making me want to find a unit with this "issue" now just so
I can solve the
Why not use a 7812 three terminal regulator? It will accept up to 30 V
on the input, deliver 12 V on the output at 1.5 amps. These cost about
$1.50 or less. If one needs more current then add a 2N3055H as a pass
transistor for up to 5 amps of current.
Another choice is a regular AC 120V p
All of these "relative" recordings have little to no value in terms of
"how loud" the noise may be. Yes, it is there. Amplify it enough and
it will blow the side of the house out. The phone on top of the amp is
certainly not where ones ear may reside.
If one wishes to cite how loud a sound
Yep, mine sounds about the same. And I too run the fan on #2 when
working FT-8. Otherwise, I set it to normal and it cycles on and off as
needed. The clicks and pops are considered "normal" as per the KPA-500
manual and also a friend that was instrumental in me making my
purchase. Fact o
Is the WSJT-X application setting in the F2 menu under Radio set for
MODE = Data/Pkt and that the Split Operation set to RIG? This keeps the
transmit tones correct within the passband of the SSB filter. Here in
this application SPLIT is not the same principle as split when working
DX. SPLIT u
Well that condition of a power failure is never advised. Likely the
radio just won't save the last parameters. And yes it is never advised
to turn off the power supply before turning off the radio. The radio
saves the last used parameters when the power switch is depressed.
This won't
Same procedure in TN. Call plate obtained with amateur license at regular
price.
Bob, K4TAX
Sent from my iPhone
> On Jul 17, 2018, at 7:47 PM, Phil Hystad via Elecraft
> wrote:
>
> Ditto for Washington State — copy of FCC license required to get call sign
> plate. But, at least in WA sta
Thanks Jim, K9YC, for the detailed information. I too concur that wide
signals can more likely be the result of the waterfall adjustments, or
the system gain, which has the no signal noise level above 30 dB on the
WSJT-X bargraph indicator. If this is the case, adjust the audio level
in the W
No, FT-8 is a weak signal mode. That is not the same as a low power mode.
Bob, K4TAX
Sent from my iPhone
> On Jul 17, 2018, at 9:15 AM, turnbull wrote:
>
> I thought FT8 was a low power mode. Am I wrong? I am not referring to Fox
> Hound mode.
> 73 DOUG EI2CN
>
>
> Sent from my Samsu
My measurements indicate the SDR Play input Z is well above 50 ohms and no
degration in signal strength was noted.
Bob, K4TAX
Sent from my iPhone
> On Jul 17, 2018, at 9:16 AM, Joe Subich, W4TV wrote:
>
>
> You will need a (hybrid) splitter ... connect the common port of
> the splitter to
Yes, you will need a Y cable, connect to RX ANT IN and OUT. The junction
of the Y goes to the SDR Play. To activate, press the RX ANT on the
radio. This sends the ANT 1 or ANT 2 signal to the Out and then back to
the In via the Y cable, while feeding same to the SDR play.
Works great. I use
See page 14, paragraph 2 under Operation. "...you may hear audible
clicking sounds as the amplifier components cool. This is normal."
Mine does, depending on the operating conditions. I see TEMP values
about 60º C during heavy FT-8 operation at 450 watts. The fan
increments to #3 d
I always follow the manual. What someone said is "hear say" in court.
For both 115V and 230V operation 3AG fast blow fuses are specified. For
115V those would be 12 amp fuses. For 230V those would be 6 amp fuses.
And they should be rated at 250 volts.
Just be sure the Mains Voltage Settin
Hence the reason for 3AC fuses. They have a ceramic body and don't explode.
Of course the only way to tell if they are open is to measure them.
Bob, K4TAX
Sent from my iPhone
> On Jul 15, 2018, at 10:18 AM, K9MA wrote:
>
> Also, fuses rated 250 V AC are typically rated only 32 V DC. That
Ok. Try K4TAX on April 15th .and that is not a vanity call. Just a good
old FCC issue in 1959.
73
Bob, K4TAX
Sent from my iPhone
> On Jul 13, 2018, at 4:34 PM, Wayne Burdick wrote:
>
> A certain amount amount of uplifting, meta-level, or otherwise tangentially
> related subject matte
John et al:
I did a similar thing using a formerly Radio Shack project box. i.e.
plastic box with a metal cover. Added 3 RCA connectors, 3 1/8"
Tip-sleeve jacks, and a couple of PowerPole connectors and a 4 position
140 Cinch power strip. Out of the box I have a pigtail of #14 stranded
wir
Yes, for low power devices, meter lamps in tuners and power meters,
etc., I use a power distribution strip I made specifically for that
purpose. It is supplied from the stations main supply. No wall warts
at my QTH.
The output connectors are a few chassis mount RCA connectors, a couple
of
Mine shows the power output regardless of the PWR setting. It shows a
10 watt full scale range when it is set to 10 watts PWR or less. If I
set the PWR to 20 watts the meter switches to 100 watts full scale and
indicates accordingly. My default TUNE power setting is 25 watts and
the meter
From page 9 of the manual: "K3S/100 typ. Suggested max from 51 - 51
MHz, 85 W, 52 - 54 MHz 70 W. " There are other specs related to
K3S/10 and transverter outputs.
Looks like 100 watts is a good number from 50 - 51 MHz. I see that on
my radio and I've not checked power above 51 MHz. T
Have you run a Transmitter Gain Calibration from the K3 Utility
Application? If you do, be sure to use a good dummy load connected
direct to the radio with a known good short coax jumper.
The fact you have 3 different power indicating devices which all
indicate different power values, I'd say
Per the manual 50% efficiency. So at 1500 watts output the. input would be abt
3Kw. A 20 amp ckt at 240 V would supply 4.8 Kw. Seems reasonable to have
adequate power for other equipment.
Bob, K4TAX
Sent from my iPhone
> On Jul 10, 2018, at 12:34 PM, "j...@kk9a.com" wrote:
>
> I based tha
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Brown
Sent: Monday, July 09, 2018 8:40 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Breakers for KPA1500?
On 7/9/2018 12:26 PM, Bob McGraw K4TAX wrote:
I would also
All this doesn't speak well for the quality of the dummy load or coax jumpers.
Bob, K4TAX
Sent from my iPhone
> On Jul 9, 2018, at 10:01 PM, Phil Kane wrote:
>
>> On 7/9/2018 7:12 PM, K8TE wrote:
>>
>> BTW, I have made a 75m QSO on a dummy load. I think I was using Radio Shack
>> coax back
conduit. If installed in conduit, it must be derated. When you put
Romex inside conduit the Romex cannot breathe and retains too much heat.
Hence the reason for derating.
73
Bob, K4TAX
On 7/9/2018 7:40 PM, Jim Brown wrote:
On 7/9/2018 12:26 PM, Bob McGraw K4TAX wrote:
I would also suggest using
I would also suggest using three - #10 with ground as the line from the
breakers to the amp operating position.
73
Bob, K4TAX
On 7/9/2018 11:43 AM, Roy Koeppe wrote:
Yes, that is what I am using.
73, Roy K6XK
I probably missed this but my google searches aren't working either.
Wil
Two tuners...wow, lucky to have any RF into the antenna.
My K3S and its internal ATU will tune the 160M inverted V{256 ft} with
balanced feedline quite easily. The SWR on the 18" of coax between the
1:1 current balun and the radio is 1.75:1. The drawback to the 160M
antenna...it i
Operator mike technique is very important with regard to good to great audio.
I've found that my $20 Behringer 8500 sounds as good as my $100 Shure SM 58.
Likewise my $200 Heil PR 781 needs for one to pay special attention to
mike-to-mouth distance in order to control proximity effect.
Pric
Although there are several DXpedition cards on my wall, this was really
my first somewhat serious attempt at working a DXpedition. The antenna;
a 256 ft center fed wire as an inverted V at 50 ft, with a balanced feed
line all the way from the feed point to the operating desk where it
terminates
One doesn't need a window. Use a saws-all, cut the correct size based on the
AC, frame it in on the outside and inside. Place and secure the AC in the
finished hole.
Bob, K4TAX
Sent from my iPhone
> On Jul 5, 2018, at 11:00 AM, Dale Chayes wrote:
>
>
>> On Jul 5, 2018, at 11:49 , W2xj wr
My shop is about 300 ft from our house. In a corner of my 25' x 50'
building {not a garage}, I have enclosed a 12' x 15' area, where I
insulated the walls and ceiling. This is my radio room which has my
test bench and equipment from a former service repair business.
investment. Du
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