Is that Canadian for "borders"?
On 10/29/2017 2:10 PM, Michael Walker wrote:
The frequency ownership is a farce of course.
I bet it was generated on April 1. LOL
Regardless, RF know no boarders and it has no bearing over me even if it
was legal.
mike va3mw
___
Don't think so from the description Wayne gave on the KX3 Yahoo group.
Wes N7WS
On 10/25/2017 8:48 AM, Ignacy wrote:
I assume that the LPA in K3 is
similar to the amp in KX3.
Ignacy, NO9E
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Did they do IMD as a function of frequency?
On 10/25/2017 8:48 AM, Ignacy wrote:
Seems a bit artificial problem, unless someone is driving an amp that
requires 12 W. My modified Expert 1.3k-fa requires about 6W to 8 W for 1 KW
output.
If a serious concern, increase voltage to 15V. The Yahoo
Personally, I would, and do, avoid that region. The difference in received
strength between 10 and 12W is imperceptible if the HPA isn't installed. If it
is installed, crank the power up to 20 or so and you're out of danger.
Wes N7WS
On 10/24/2017 8:31 AM, Mike via Elecraft wrote:
The K3/
The K3/10 will output 12W.
That said, based on IMD measurements I have performed I would NEVER run a K3/10
at 12W out. Frankly, with my K3S with the latest rev KLPA3A to keep 3rd order
IMD below 30 dBc, I would throttle it back even more above 18 MHz.
Wes N7WS
On 10/24/2017 6:27 AM, Rose
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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Interesting photos of my Elmer's mobile though:
http://www.k0bg.com/gallery2/main.php?g2_itemId=1039
On 10/9/2017 3:11 PM, Bob McGraw K4TAX wrote:
Yeah, just remember..everything written and printed and found on the
web is not necessarily correct, nor accurate, and not of the current
m
My friend Ian makes some good points. Just to clarify though, the
SDR-IQ/SpectraVue combination does provide spectrum, waterfall and combinations
of the two viewing. Personally, I run the combo view. I guess thirty years of
sitting in front of real spectrum analyzers makes me like to see a spec
I guess I have to repeat myself:
"SpectraVue software is the only SDR software I've ever liked. It interfaces
with the K3 seamlessly. Every other program I've tried has been installed and
quickly uninstalled. Sometimes more than once, usually having me ask myself,
"Self, what were you thin
x27;t live with. Either way, it's going back.
Wes N7WS
On 9/27/2017 4:36 PM, Mark E. Musick wrote:
Hi Wes,
Why are you returning the RSP2pro?
Mark, WB9CIF
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Wes Stewart
I bought an RSP2pro last week. I just got off the phone with HRO arranging its
return.
I too use an SDR-IQ as a panadapter and as a decent lab spectrum analyzer if you
are careful and know what you're doing. Actually, I have two K3s so I have two
SDR-IQs. SpectraVue software is the only SDR
Exactly. We heard for years that manufacturing legal limit amplifiers wasn't a
market Elecraft wanted to enter. Whoops, hello KPA1500.
Wes N7WS
On 9/27/2017 12:18 PM, Kevin der Kinderen wrote:
I don't see a problem with Elecraft or any manufacturer expanding their
line if they've identifie
Have you never turned on VOX when you meant to change bands? Or set up VFO A and
B to split frequencies and then accidentally (and unknowingly) written A to B
when you tried to turn on Split? Your Split indicator gives you comfort but
you're still transmitting on the DX. Probably half the, "He
Contact XE1C
He operates (as an officer) from Harmony of the Seas, interestingly enough a RC
liner.
Wes N7WS
On 9/22/2017 6:13 PM, Bob Witmer wrote:
Avoid Royal Caribbean ... “HAM RADIOS” are on the list of prohibited items
along with firearms.
No one at RCP seems to know why. Even asked
A couple of points.
1) In an OCF the currents are not equal.
2) The two cables are operating in a (different and largely unknown) mismatched
condition. Using ARRL publications for calculating additional loss due to
mismatch is fraught with danger. As is I might add, using older versions of TL
Make sure the pitch in the K3 matches MMTTY.
On 9/17/2017 12:37 PM, Gary Smith wrote:
Hard to enter a short subject that is
complete...
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Mea culpa. On 9/14/2017 5:55 PM, Jim Graves wrote:
Wes, you were talking about http://www.amateurradiosupplies.com/
and I was talking about http://www.americanradiosupply.com/
Those are not exactly the same thing.
Jim G.
W4JRG
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There's an LDE on this reflector.
On 9/14/2017 4:44 PM, Jim Graves wrote:
Martin I see where you have found an adapter but just for the record,
this is a great source for all types of RF connectors, wire, coax, etc.
http://www.americanradiosupply.com/
They are very reliable and are fast shipping
http://www.amateurradiosupplies.com/product-p/cz7518b1125.htm
On 9/14/2017 9:10 AM, Martin wrote:
Elecrafters,
for a DIY project i need an adaptor like this
http://www.friedrich-kusch.de/english-hp/Stecker/UHF-Stecker/NC-565TG.htm
but only 2/3 (or 1/2 the length) .
This adaptor is 50.7mm = 2
ire to
cause the fault. This probably was enough but Josh's tip and turning off the
function is likely the real answer.
Wes N7WS
On 9/9/2017 5:23 PM, Wes Stewart wrote:
Thanks to all who offered suggestions. Rather than many individual replies,
I'll just add further comments here.
blinking again. And again.
I should note that the same cable is used on the K3S without issue.
Wes N7WS
On 9/8/2017 2:47 PM, Wes Stewart wrote:
I've had to remove my K3S from the station again for repair. I've resurrected
my old K3 to fill in. (Always have a spare)
Since the las
My testing with WSJT-X (FT8) "tune" for an audio tone, says that any ALC
indication at all, no matter where it is, gives exactly the same RF output.
That said, _and this may only apply to my situation, _the signal is cleaner with
only three bars lit. I'm seeing 52 Hz spurs at -50 dBc for anythi
I've had to remove my K3S from the station again for repair. I've resurrected my
old K3 to fill in. (Always have a spare)
Since the last time this happened, I've ventured into FT8 operating and I noted
that when I used my USB to Serial converter that always worked fine in the past,
FT8 was ext
I am often puzzled by some of this advice. The K3S manual on page 30 says among
other things:
"While speaking into the microphone in a
normal voice, adjust MIC for a peak ALC
meter indication of about 5-7 bars (see below)".
Then regarding audio data modes it says on page 34:
"If you’re using a
As would VOX gain per mode.
On 9/4/2017 8:15 PM, Don Wilhelm wrote:
With digital modes, there is no problem of room noise activating the VOX. All
the audio is coming from the soundcard.
Yes, VOX per mode would be a great addition to the KX3/K3/K3S firmware.
I asked about this on the Yahoo WSJT-X group:
From one of the developers,
"Hi Wes,
we do not support serial port splitting products with WSJT-X, they are
unreliable as there is no acceptable way to divide control of a single device
without arbitration. If you get it working then that's fine b
In addition to the hard limiter Elecraft provided threshold and slope controls
in the AGC system.
On 9/3/2017 4:04 PM, Ron D'Eau Claire wrote:
The advantage of controlling the gain manually is not an "old wife's tale".
Rather, it's clearly just a technique that is not for everyone.
AGC will
against power line noise.
However, NR does not work on DATA mode. I use BHI Compact In-line DSP Noise
Eliminating Module, which is inserted between K3 line out and USB audio module.
For effectively eliminating noise, tuning RF gain and AGC level in addition
to NB and/or NR would give you better
Unfortunately, WSJT-X demands full control of the CAT port. Been there, done
that.
Wes N7WS
On 9/3/2017 2:47 PM, Gary Smith wrote:
I'm sure this has been asked before but I
am not finding the solution, the story of
my life...
I just loaded WSJT-X into the Windows 10
computer & I have a K3s.
I agree. The adjustments are far too many and arcane. I'm currently plagued
with powerline noise that has yet to be fixed, although they are supposed to be
working on it. The K3S blanker is slightly better than useless. When I set it
aggressive enough to be audibly useful, FT8 decodes multiple
Coffee.
In the early 1980's I was working on a new PA design for Phoenix Missile. The
original design used relatively narrow band klystons, and we needed more BW for,
well, never mind. So the new design used a three-stage IMPATT diode amplifier
(injection-locked oscillator in reality). A sin
This has already been discussed and you were part of the discussion.
http://elecraft.365791.n2.nabble.com/K3-Odd-ALC-behavior-td7633052.html
Wes N7WS
On 8/27/2017 6:17 PM, Bob McGraw K4TAX wrote:
While mentioned earlier, the effort to set the correct audio level such that
the ALC bargraph sho
If it's on, turn off flatten and see what happens.
Wes N7WS
On 8/27/2017 7:41 AM, Don Putnick wrote:
There's a local ham who is also on JT65. He shows up as a big red splatter
on the waterfall. I used the K3's notch filter to remove him. He's gone but
now there's big red splatter to either sid
About three years ago I purchased some Ecoflex-10 cable assemblies from
Vibroplex. These had what seemed to be very nicely made PL-259 type connectors
preinstalled. (Getting lazy in my old age) It appears that Vibroplex no longer
sells these but other vendors do.
This note is to report on the
No.
On 8/19/2017 2:21 PM, Nr4c wrote:
God. Will it ever end?
Sent from my iPhone
...nr4c. bill
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Grant is right on.
As I said in the last one of these discussions, "What's all the fuss about?"
If there is a change, please, please, please don't go to Yahoo or Google
groups. They are pathetic.
Wes N7WS
On 8/19/2017 7:49 AM, GRANT YOUNGMAN wrote:
Really? A separate forum for Macros
Hmm, $51/night, for $5,000 they'll sell you the place.
N7WS
On 8/17/2017 8:27 PM, Jim - N4ST wrote:
Yes, motel rooms normally going for $51/night are over $600. A bargain at
$1000 for two nights.
_
N4ST
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What are the settings on the "Audio" tab?
Mine are Input: Microphone xxx USB Audio CODEC
Output: Speakers xxx USB Audio CODEC
Wes N7WS
On 8/11/2017 7:30 AM, Serge Bertuzzo wrote:
Hello to the group.
I am receiving no problem at all. I am however having difficulty in get
No.
On 8/9/2017 9:43 PM, Doug Millar via Elecraft wrote:
Hi All, Simple question. I am using the K3 as part of a microwave EME station.
I am using an SDR IQ on the IF output. My question is whether the AGC effects
the IF output level. Doug K6JEY
drzarko...@yahoo.com
562 810 3989 cell/te
Thanks Brian.
I've been reviewing my test setup. Because of limited USB ports on my normal
station computer (laptop) I have been using a new (to me) desktop I'm building
to be the station computer, to run both WSJT-X and my SDR-IQ software
(SpectraVue) for this investigation. The sidebands I
I said earlier:
"If I set the tone to 1500 Hz, the FT8 mid-band target, I'm presented with the
cyclic ALC and some ~193 Hz, -50 dBc sidebands. "
Ten KHz/div is too coarse to see these. Try again.
Wes N7WS
On 8/5/2017 1:01 PM, Brian Hunt wrote:
Here are some spectrum photos from the tune si
to disable the irritating microphone boost which makes it too
sensitive. I'm taking about the KIO3B USB CODEC here... Max NG7M
On Sat, Aug 5, 2017 at 1:24 PM, Wes Stewart wrote:
Except when the sound card is in the computer instead of the radio, "Line
In" is receiving signal f
ned sensitive.
Regards,
Wes N7WS
On 8/5/2017 9:39 AM, Joe Subich, W4TV wrote:
On 8/5/2017 11:14 AM, Wes Stewart wrote:
But IMHO, you need to put a 30 dB attenuator on the input of the internal
sound card; it is way too sensitive. I'm having to run the Windows gain at
less than 5% an
OK, I see it now. What's the point?
Wes N7WS
On 8/5/2017 7:27 AM, Bob McGraw K4TAX wrote:
Several have asked, this link should work.
73
Bob, K4TAX
K3S s/n 10163
https://www.dropbox.com/s/an06t907tx8xgid/Video%20Aug%2004%2C%208%2012%2025%20AM.mov?dl=0
__
tone slightly off the standard
pitch may be an acceptable workaround.
Wayne
N6KR
On Aug 4, 2017, at 1:42 PM, Wes Stewart wrote:
Good find Brian!!! I see it too in FT8.
This probably explains the great variability in results reported. Some of us
have a problem, others say, Huh, what the he
Good find Brian!!! I see it too in FT8.
This probably explains the great variability in results reported. Some of us
have a problem, others say, Huh, what the heck are you talking about?
Wes, N7WS
On 8/4/2017 11:33 AM, Brian Hunt wrote:
Here's some followup:
FLDIGI shows the "pumping" affec
They should fix some links on this site.
On 8/4/2017 2:26 AM, David Cutter via Elecraft wrote:
Apologies for taking this away from Elecraft topic, however, you might be
interested in a specific noise measurement system here:
http://www.crosscountrywireless.net/sentinel_2_sdr.htm
in which a *cal
Welcome to the club. I don't know what it is, but it is.
See my post "Soundcard levels" from July 16.
Maybe with your complaint there will be a response.
BTW, TX Test doesn't guarantee zero output. I have another thread about that.
Crickets.
Wes N7WS
On 8/3/2017 1:25 PM, Dave Cole wrote:
Sort of like NIST saying WWV is on exactly 10 MHz. It is, because they say so.
I live a few hundred meters from a national park and receive mail sometimes
addressed to "Park Neighbor." I have dealt with park rangers and administrators
for a quarter century. Many of them get quite perturbed w
I have one of each, a K3S with USB and a K3 without. When I was having FT8
problems (not sure they're over) I set up both radios and "worked myself". The
K3 was setup exactly as Jim describes, down to the same sound card, and the K3s
used the internal USB. It's much easier to set proper TX au
You're an hour away from Elecraft. Your options:
1) Drive it down and tell them you'll wait.
2) Drive it down and ask for a loaner.
3) Come by my house in Tucson and I'll loan you one.
Wes N7WS
8/2/2017 6:06 PM, Christopher Hoover wrote:
I went to bed last night leaving the radio on to deco
I run my email clients wide open like a direct sampling radio and post-process
by eyeball and the [delete] key. I really don't understand all the fuss.
Wes N7WS
On 8/1/2017 4:00 PM, Jim Cassidy wrote:
Is there an email roofing filter recommendation??
__
I was going to recommend what Don says with a twist. (BTW, it's page 38 in the
K3S manual)
To get a normalized noise reading, terminate the RX antenna connector, select it
and let the AFV value stabilize. Then select the normal antenna and the dBV
display. This will display the ratio of ext
er to "fake it" for the split operation setting, and it
seems to do better, with faster xmits.
On Mon, Jul 31, 2017 at 3:19 PM, Wes Stewart wrote:
I've made a few QSOs with FT8 but have had less then stellar success. In
looking for possibly causes I took a close look at timing
I've made a few QSOs with FT8 but have had less then stellar success. In
looking for possibly causes I took a close look at timing, since a lot of the
chatter in the WSJT Yahoo group is about the need for close time synchronization.
I noted that when my transmit interval occurred, there seemed
You guys should go back to the first message in this thread and reread it.
This is not a key click situation. It is band-limited noise and can be heard in
XMIT, no need for keying. I believe it is thermally sensitive; worse right
after powering up the radio and diminishing with warm up.
On
Thanks for confirming, Gene. Dan's message did not come through on my service.
But it's not the clicking that develops the power. Key down does it.
Wes N7WS
ps. Olaf, if you are reading, your direct email bounces. Perhaps that is why
the Elecraft reflector rejects your posts.
On 7/26/2
I received an email from a German ham telling me that he's observing the same
thing that I reported a couple of years ago. Specifically an audible "clicking"
sound in both my K3S and KPA500 that coincides with CW keying. See this thread:
http://elecraft.365791.n2.nabble.com/KPA500-clicking-td75
Agree. It won't work for me either using LPBridge.
Wes N7WS
On 7/21/2017 6:25 AM, brian wrote:
...
I never got WSJT to work over a LPBRIDGE virtual port with the K3. It only
works via a direct connect port. WSPR has the same problem.
So I do without the above and manually log QSO's in th
You are not alone. I much prefer my old K3 with an external sound card to the
built-in in my new(er) K3S.
I mentioned (complained) about this before to no effect. Trying to set ALC to
the recommended 4+flashing bars is nearly impossible. Changing Line Out by one
level, will change AGC from
SOP on MS and EME over 30 years ago.
On 7/5/2017 5:54 PM, Jim Brown wrote:
...
There's another powerful way to prevent overload of your RX by your neighbor
-- out here in W6, neighbors try to TX on the same cycle as our neighbors.
73, Jim K9YC
___
Since I am being dragged, kicking and screaming, into these imaginary QSO modes
and have yet to allow my computer to talk to anyone else's computer on the air,
perhaps I shouldn't comment, but I will anyway :-) I am receiving BTW, using
WSJT-X in JT65. Depending on the tone(s), if the K3 is in
I have and have used a David Clark H10-30 headset on my TS870. The microphone
element is an amplified dynamic. I don't recall what the original mic connector
was; I cut if off and used the Kenwood standard 8-pin. The headphones use a
standard 1/4" mono plug. I always got good audio reports b
When I partially migrated from HF to VHF in the 70's I jumped over six, went to
2M and got involved in MS, Tropo and EME, hence I was never interested in 6M and
never built any equipment for the band. But, since I had acquired a K3, but no
amp or tuner, I connected to my 80-meter inverted-vee a
Well, I would prefer one that presented a high resistive impedance with no
resonance at all:-)
Wes N7WS
On 5/22/2017 10:54 PM, Jim Brown wrote:
Yes, really.
Jim
On Mon,5/22/2017 10:15 PM, Wes Stewart wrote:
Really?
On 5/22/2017 4:25 PM, Jim Brown wrote:
Common mode chokes are used
Since a truck can be defined as a wheeled vehicle for moving (heavy) loads, many
variations exist.
Likewise, a balun can be defined as a device for converting from a single-ended
to a balanced source/load and many variations exist.
The fact that both terms are all-inclusive doesn't negate the
Really?
On 5/22/2017 4:25 PM, Jim Brown wrote:
Common mode chokes are used near resonance...
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That is one, but far from the only form of a balun.
A single-ended input, differential output amplifier is a balun for example.
Wes N7WS
On 5/22/2017 2:42 PM, Ron D'Eau Claire wrote:
It is useful to remember that a so-called "balun" is nothing more than a length
of transmission line - most
PLEASE ignore all of Jim's pontification.
I find it curious that Terman ("Radio Engineering"), Kraus ("Antennas"), Johnson
("Transmission Lines and Networks") all use the "meaningless" word "balun" in
their books. Clearly, these guys should have consulted with Jim before doing so,
because obvi
r emulation. I use
one - not so much any more - but still have it anyway. Wonderful keyer. Not
sure if this is the one you're referring to though.
73,
Kev K4VD
On Sun, May 21, 2017 at 9:04 PM, Wes Stewart <mailto:wes_n...@triconet.org>> wrote:
I'm approaching my 60t
I'm approaching my 60th year in ham radio and have a confession; I learned Morse
with my Boy Scout Handbook (still have it) by sight not sound. Consequently,
I've never been a very good CW op, although I have a 20 WPM Extra license. As a
Novice I used a Western Electric "Pole-Changer" straight
Two Christmases ago, my fiance asked me what I wanted for a gift. On a whim,
without too much study, I said a Bodnar GPSDO. I emailed Leo and inquired about
using the unit as a reference for my SDR-IQ (66. MHz) and a 10 MHz source
for my DG8SAQ network analyzer which can also operate as a
How did you measure the GPSDO? Against the Rubidium?
On 5/8/2017 3:26 PM, Jay Miller wrote:
I was curious so I bought a GPS disciplined 10MHz source from China using
the eBay seller "cybereveryday." I have a calibrated scope and a Rubidium
10MHz source. I noticed a frequency offset on three of
Mine typically undershoots after a band change.
OTOH, if I set Config -> Tune Pwr to Nor, activate Tune and adjust the K3S to
drive the KPA500 to 500W for example, when I hit the key to transmit I get 600W.
Power control in the K3 is, shall we say, different from analog control and not
withou
1) Pray it doesn't rain.
2) http://www.cruiseamerica.com/
Wes N7WS
On 5/7/2017 9:00 AM, Wayne Burdick wrote:
Hi all,
My wife, son and I are planning to drive to Oregon or Idaho to view the solar
eclipse on August 21st. Hotels in the rarified Zone of Totality are either sold
out or price-gou
Just because a "device" will do under 2 dB (or whatever) doesn't mean an
amplifier necessarily will. Circuit losses, mismatch and bias settings will
affect the circuit NF.
Additionally, something like an HP noise source is made to be a good source
match, both on and off. Those with lower exce
Count me out.
On 5/1/2017 5:05 AM, Michael Walker wrote:
How many of you would be interested?
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h many close-in signals.
The transmitted phase noise is also reduced, so your ham neighbors might
notice a difference in the width of your transmitted signal.
73,
Don W3FPR
On 4/25/2017 4:33 PM, Wes Stewart wrote:
I've seen these rave reviews about the new synthesizer many times. Has
any
I've seen these rave reviews about the new synthesizer many times. Has anyone
actually done an A/B comparison in real time with two otherwise identical radios.
I have a K3 with the original synthesizer (the actual one used to develop the
stiffener plate) and a K3S. I have not run them side-by
Hmm. Speaking of trolls.
Name and call embedded in email address.
On 4/22/2017 6:31 AM, Mike Smith VE9AA wrote:
I have very much enjoyed the recent flurry of posts wrt the KPA1500 (well
done Elecraft).
One semi-related thing I have noticed. (simply due to the sheer volume of
posts this weeke
With respect to your first sentence, all I can say is, of course; is there
anyone who thinks differently?
In a signal generator, where source match is important, there will probably be
an attenuator, or at UHF and above an isolator (terminated circulator), that
dissipates returned power. Other
amplifiers will only
tolerate 2:1 SWR.
John KK9A
>From Wes Stewart n7ws
Fri Apr 21 13:11:12 EDT 2017
I'm not necessarily defining a personal situation. But almost any 80 or 160
antenna will suffice as an example.
I am currently constructing a vertical for those bands. The model shows
From the FAQ:
The amplifier’s rugged internal ATU can handle full power with load SWR up to
3:1, while a wider matching range is allowed at lower power levels, including up
to 10:1 in standby mode.
On 4/21/2017 10:51 AM, Phil Hystad wrote:
I must have missed something to generate the exchang
21, 2017, at 8:56 AM, Wes Stewart wrote:
A couple of points.
If you believe that an SWR of >3 necessarily degrades the efficiency of an
antenna, you are simply wrong.
If the "tuner" components have to be derated to this extent then perhaps it
should be called a line flattener rat
A couple of points.
If you believe that an SWR of >3 necessarily degrades the efficiency of an
antenna, you are simply wrong.
If the "tuner" components have to be derated to this extent then perhaps it
should be called a line flattener rather than a tuner because a lot of guys are
still goin
Not enough full power tuner range.
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Pleas
So has propagation.
On 4/20/2017 1:00 PM, Kevin Cozens wrote:
The K line started with QRP levels and now they may be up to a 1500W amp? How
times have changed.
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Sorry, you took too long. I retired the previous QRO amp, bought a KPA500 and
ripped out the 240V service to the shack.
On 4/20/2017 9:50 AM, Wayne Burdick wrote:
http://www.elecraft.com/images/visalia1.jpg
Watch this space for further details :)
73,
Wayne, N6KR
Eric, WA6HHQ
__
Yes, just like the bio (https://qrz.com/db/N7WS) says; been here 70 years. I
like to say I was conceived here, since my parents met and married in Tucson,
but were actually in San Diego when I was born. They moved back when I was a
young child and I've never left. No reason to, unless I want
I'm cursed. It's bad enough that I've worked (I thought) several stations in DX
pileups only to later have the DX say, "Nope, we worked N6WS, not N7WS". Now my
work is attributed to him too. (Just kidding Jim)
Actually, the article never appeared in QST. Too technical; it went right to
the
I don't know whether I would call that "extensive" damage but whatever...
I have my own photos of me standing next to this anchor, but since I can't send
attachments, here is a link:
https://en.wikipedia.org/wiki/KVLY-TV_mast#/media/File:KVLYPylon.jpeg
I didn't see any extra grounding conduct
] On Behalf Of Wes
Stewart
Sent: Monday, April 17, 2017 5:17 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] OT: Groond rods and concrete
Isn't the tower base pretty much a ground rod?
On 4/17/2017 2:16 PM, Rose wrote:
-NEVER- encase a ground rod in concrete ... especially a tower base
Isn't the tower base pretty much a ground rod?
On 4/17/2017 2:16 PM, Rose wrote:
-NEVER- encase a ground rod in concrete ... especially a tower base.
As a retired 2-way radio tech, I'm aware of two towers that had to be
re-installed because of lightening strikes exploding their concrete bases.
I'll agree with both points.
That said, think about the space between wires. On and about the wires is a
relatively thin layer of plastic. From there, the space between wires is filled
with...wait for it...air.
It might be worthwhile to read this: http://k6mhe.com/n7ws/Ladder_Line.pdf
On 4
Why do you suppose a little bit of dielectric on the wire would make a huge
change, when the majority of dielectric is still air?
On 4/15/2017 3:56 PM, Clay Autery wrote:
Thanks
So, these numbers are for BARE copper, right?
Using insulated wire changes things a bunch
For instance 18
I am reminded of when I (actually my employer and you taxpayers) bought a
shielded room to enclose "my" RF laboratory. This was modular, 16' x 20' x 10'
and composed of 2" thick particle board, clad on both sides with tin-plated
sheet steel. Because I needed to be able to move a rack mounted t
Not me personally but my Elmer, the late W7UVR, back in the AM days ran a
high-level modulated 4-1000A.
I've got his QSLs around here someplace, but in the meantime someone else has
posted them too: http://hamgallery.com/qsl/country/USA/Washington/w7uvr.htm
He later converted to SSB, increase
On morning (probably about 1980) I was beamed west at setting moon looking for
Asia on 2M. I heard a station calling CQ and said to myself, that's Dave's
(W5UN) frequency. Sure enough, it was Dave calling CQ. So I tuned off him and
heard another station calling CQ. I listened and was surpris
I worked W5UN on two-way SSB on 2M EME.
A local friend, John, W7BBM, has a homebrew(!) 30 foot dish on 1296, and up, and
routinely says, "Hello moon" and receives speaker-quality returns.
On 4/9/2017 4:36 PM, Josh wrote:
SSB on EME? Wow!
73,
Josh W6XU
Sent from my mobile device
On Apr 9,
I spent a good part of my career at Hughes Aircraft working on the Phoenix
Missile transmitter/receiver unit. Being an RF guy I was asked once to design
and build a 225 MHz PA that would deliver a couple of hundred watts output when
driven by an HP608 signal generator. The object was to drive a
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