Wilson
"There is only so much bad English up with which I will put." Said someone
famous.
David G3UNA
On Sun, Sep 1, 2024 at 6:36 PM Wilson Lamb via Elecraft <
elecraft@mailman.qth.net> wrote:
> Shockingly bad grammar, from a supposedly educated person:
>
>
> " I use an old Zero case for my K3
My contest team uses N1MM contest logger and we can "point and click" on the
band map side bar where previously entered call signs are listed. I use
this frequently and I use the t/rx tuning dial for more search and pounce.
Learning N1MM was slow, but using it speeds me up a lot.
David
G3UNA
Perhaps what you are seeing is not so unusual: I've read that the IC706 had
a similar spike and I think it is one of the Alpha amps that shuts down
thinking it is an overload.
David
G3UNA
- Original Message -
From: "Steef PA2A" <[EMAIL PROTECTED]>
To:
Sent: Saturday, November 03, 2
An interesting parallel with home-build PCs, but the difference is that PC
boards are sold separately on the open market and in theory can be connected
with many other manufacturers' boards to make up a system; as such I would
interpret them as products within their own right. The K3 boards are
You only self-certify if you intend to place new goods onto the EEC market,
ie you are a manufacturer or importer.
David
G3UNA
- Original Message -
From: "Julian G4ILO" <[EMAIL PROTECTED]>
Couldn't we just self-certify it?
___
Elecraft m
Ideally you want a spreader that you don't have to thread the wire thro:
imagine threading hundreds of feet or wire thro tiny holes in scores of
plastic parts.
I helped a friend make spreaders from the only plastic we had which was
stiff plastic hose pipe. We cut it into 4" (100mm) lengths th
I heard of this problem of instability when a second psu upset the first one
due to very high values of input capacitance.
David
G3UNA
- Original Message -
From: "Don Ehrlich" <[EMAIL PROTECTED]>
To: "Bill W5WVO" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>;
Sent: Saturday, November 17,
The reason for sidetone is that it makes talking much easier if you can hear
your own voice. Early telephones could easily be made to have no sidetone,
but it was found that the user found it difficult to speak properly, so some
of their voice was fed back just for this purpose. If you have tr
Since getting this link from Julian, G4ILO, I am tempted to get a PDA for
remote working.
If you weren't aware of them, take a look at CTR-Remote
http://ctr-remote.home.att.net/CTR-Remote.htm and Pocket Digi
http://sourceforge.net/projects/pocketdigi/ .
David
G3UNA
- Original Message --
Simon
I would be interested to hear what that "sound" is. I have been
disappointed with narrow cw filters in the past. What sort of cw speed is
it comfortable with? Could you put a sound file onto your website? I know
it is going to be doubly digitised via the internet, but it might give m
In my view there are 2 issues here:
1 in my view the amplifier should be self-protecting against overloads, eg
antenna fault (I am mindful of virtually any other equipment which must be
tested by law with overload conditions)
2 ALC has its problems and thus not always connected, but every
ly even the exciter
but that's over the top for 10% reflected power (2:1 SWR) or
even 20% reflected power (3:1 SWR).
73,
... Joe, W4TV
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of David Cutter
Sent: Monday, December 03, 2007 5:55 PM
To: Elec
avid
G3UNA
- Original Message -
From: "Geoffrey Mackenzie-Kennedy" <[EMAIL PROTECTED]>
To: "David Cutter" <[EMAIL PROTECTED]>
Cc: "Elecraft Discussion List"
Sent: Tuesday, December 04, 2007 12:46 PM
Subject: Re: [Elecraft] linear amp shutdown (was ALC)
F
Some builders have suggested that a special tool in needed for some of the
assembly, eg a grabber type to hold screws and washers. If this is a
necessity for proper assembly, it would do us all a favour if Elecraft would
make a bulk purchase and include it (or offer it as an accessory) with the
A food box and lid, ie very large sandwich box. Adds hardly any weight but
protects very well inside a shoulder bag.
David
G3UNA
Do you have a favorite bag for carrying your K2 and a few accessories
(like a set of Palm Mini paddles and some cable, maybe a small PS)? I need
something that wi
I'm surprised that folks are going to the trouble and cost of noise
reduction headsets, by this I understand they mean ANR ie active noise
reduction. Most of the noise reduction in the upper part of the audio band
comes from the headphone enclosure (shell) and it's only in the lower audio
band
In the controlled environments of which I am familiar (military and
commercial) all operators have side tone whether they like it or not. We
amateurs have a choice of side tone or not and I'm coming to the conclusion
that's at least half the problem of shouting.
David
G3UNA
It's good your op
This happen to me quite often, mostly at weekends. I'm getting up to 21
copies at the moment. Others have made this comment from time to time.
David
G3UNA
- Original Message -
From: "Per Arne Wahlgren" <[EMAIL PROTECTED]>
To:
Sent: Sunday, December 30, 2007 12:21 PM
Subject: [Elec
I can't see one, perhaps someone left it switched on...
David
G3UNA
- Original Message -
From: "Robert Brigham" <[EMAIL PROTECTED]>
To:
Sent: Thursday, January 03, 2008 4:15 PM
Subject: Re: [Elecraft] Speed of Dark (Was K3 NB indicator flashing)
I think I remember seeing one in a S
I seem to remember a 40m beam made this way in one of the old ARRL books.
David
G3UNA
While Cookie's comments are true, there is a useful type of short antenna
known as a Normal Mode Helix, which if built, tuned and matched correctly
___
Elecraft
Here is an interesting antenna made by Lloyd Butler VK5BR. It uses open
wire feeder to a VERY small antenna.
http://users.tpg.com.au/users/ldbutler/ReverseFeedTopLoading.htm
David
G3UNA
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Post to: Elecraft@mailman.qth.net
Y
Ooops. I must apologise for my mistake: I've read the article in more
detail and Lloyd is not feeding a small antenna, he is using the "feeder" as
the antenna by deliberately unbalancing it with a terminal unit to obtain
maximum current at the far end of the feeder. Presumably this would then
I've used several strands of enamelled copper wire twisted together. I
usually twist 3 sets of 3 of quite thin wire, whatever is on hand; 0.2 to
0.45mm dia is easy to use; after twisting I give the group a good pull the
stretch and stiffen it a bit but it still remains very flexible indeed and
fficiency
The capacitance between individual strands in Litz wire limits it's
usefulness above 1 MHz or so. W8JI has an interesting discussion of
skin effect at:
http://www.w8ji.com/skindepth.htm
Bob NW8L
On Jan 6, 2008 3:54 PM, David Cutter <[EMAIL PROTECTED]> wrote:
I've u
David
Do you mean "close to resonance" or close to 200ohm impedance ?
This is where the truly balanced matching units come into their own, but
does anyone make them?
David
G3UNA
Cobra Ultralite
(www.k1jek.com) and the other is a 40 meter inverted Vee fed with 300-ohm
twinlead. The tuner/b
Works well, with sound
David
G3UNA
The video is available here: http://www.hb9drv.ch/tmp/k3build.wmv
Simon Brown, HB9DRV
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Subscriber Info (Ad
I haven't read anyone refer to the antenna bandwidth, perhaps I missed it.
Small, local, transmitters would have "small" antennas with much lower
bandwidth than a big transmitter and therefore some additional self-limiting
of transmitted bandwidth.
Is the transmitted bandwidth part of the meas
I hope someone is making a list of tips like this, they will be invaluable
for us all.
David
G3UNA
Subject: Re: [Elecraft] K3: Strange VFO Behavior
What ever you do, don't press the SPLT button to go into split mode when
you have the condition you described because if you do, you will scre
- Original Message -
From: "David Ferrington, M0XDF" <[EMAIL PROTECTED]>
To: "David Cutter" <[EMAIL PROTECTED]>; "Crafters"
Sent: Friday, January 18, 2008 9:04 AM
Subject: Re: [Elecraft] List of tips
Yes, or rather Wayne is maintaining a ope
I would like to use an analogue speech compressor like the one in the K2
SSM2165 but I see it is now obsolete. Can anyone recommend an alternative?
In amateur applications of modest compression, is there much difference between
the -1 and -2 types? I'm told a few of the lower gain versions
Chris
In the crowded band conditions, did you notice a definite change as you went
through filter sides?
David
G3UNA
This morning around sunrise when the band peaked it was great to hear the
W5s booming in, it was fantastic to be called during a run of Europeans by
W6XI in Arizona, but the
I don't know what thread you will need, but I remember seeing nicely
coloured types for making computer cases look flashy, gold, black, green,
red...
David
G3UNA
- Original Message -
From: "Brett Howard" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>; "'David Pratt'" <[EMAIL PROTECTED]>;
Nice, but they need a special "nut" fixed into the chassis; would be a bit
of an engineering job to get them in I think.
David
G3UNA
- Original Message -
From: "Stan Rife" <[EMAIL PROTECTED]>
To: "'Elecraft Reflector'"
Sent: Tuesday, January 29, 2008 11:51 PM
Subject: RE: Re: [Elecra
For many applications a scope is somewhat limited and a scope-adaptor for your
laptop / pc offers much more, for a lot less money, size, weight. These range
from simple to of course expensive. I could start the list of products with
Pico Scope, but there are now so many and they are very smal
e just parallel port connections, but that's mostly upgraded to
USB these days.
Have fun
David
G3UNA
- Original Message -
From: <[EMAIL PROTECTED]>
To: "David Cutter" <[EMAIL PROTECTED]>; "Elecraft"
Sent: Monday, November 27, 2006 5:21 PM
Subj
If there's one thing the Navy do not like, it's being shown up by another
branch. I heard tell of a newbie secretary who typed up some minutes and
put the attendees in alphabetical order. The Navy refused to attend the
next meeting until they were at the top - it's probably an 'urban legend'
Also finger grills and panel slots create turbulence which can drastically
reduce flow. For a common or garden 'computer' type of fan, a dust filter
can practically stop air flow all together, so, choose with care.
David
G3UNA
- Original Message -
From: "Geoffrey Mackenzie-Kennedy" <
A designer will take into account which parts he wants to cool first. For
instance, if a sensitive component (vfo?) is on the cool side of the draught
then it will not be affected by a hot component down stream. However, if
the direction is reversed you could be creating a problem that wasn't
A colleague used to work for a tv manufacturer and they had a recurrent problem
with tvs going sick after a few months. It was traced to solder joints not
made correctly. Their soldering technique was satisfactory and the component
manufacturers came over from Japan to investigate why the lead
Some of these protective cases are exceedingly good but the plastic versions
have hinges and lip around periphery that extend the size considerably.
Although they are made of structural foam, they add quite a bit to the
weight of a basic K2, even the K2/100. I use a large sandwich/food box and
This might have been said already:
I have it in mind that the introduction of the Morse Code as a requirement
for an amateur licence was to enable (in the UK at any rate) a coast station
operator to instruct amateurs to clear the frequency in time of war. Quite
what the form would be or how i
If extensive portable operation is expected from your station, then consider
building the station INTO the Peli case. Simply open the lid, attach antenna
etc and operate straight away at maximum set up speed. The only real
consideration then is heat dissipation for QRO. Perhaps a flip-up leve
I did an all day demo at a local kids school (<11 years old) and they
enjoyed most of what we did. But what they really lapped up was being
taught to send and receive Morse Code across the class room and into
adjacent rooms. I was astonished at how quickly they caught on and how they
enjoyed
Getting above the noise is an expression that has worried me for a while. Some
modes I understand are perfectly happy "in the noise" such as PSK32 and spread
spectrum and would be well-suited to emergency/low power use where battery life
is crucial.
It's a complex subject I know, but I feel sp
Dear Dr
I'm sure I heard of a filter that peaked the audio passband to enhance the
s, c, ch etc but cannot remember where, perhaps it was in HR. Yes, I am
interested and if we can reduce that s+n/n ratio we can get more out of our
QRP, particularly in noisy conditions. I'm not hopeful, thoug
I'll stick my neck out and say it was a standard handed down by the British
Post Office, generally known as a Post Office rack, now known by all kinds
of "standards" numbers.
David
G3UNA
- Original Message -
From: "Tom Skinner" <[EMAIL PROTECTED]>
To:
Sent: Wednesday, December 27,
An excellent article. The first sentence says a lot for us.
"The language of dots and dashes has been the lingua franca of amateur
radio, a vibrant community of technology buffs and hobbyists who have
provided a communications lifeline in emergencies and disasters. "
David
G3UNA
- Ori
Both ICE and NQN are good and NQN best but tricky (and expensive) to make
properly. However, what you really need are QRP filters which should be
very much smaller and lighter than either of the above. They both weigh a
lot more than your rigs. Same with coax filters. If you could convert th
My ICE filters are model 419B which are on this site:
http://www.iceradioproducts.com/filtersrf.html
They are rated 200W, weigh 5 pounds and cost $288. They are meant for
multi-station contesting and close-in dxpedition stations and I think are
over the top for QRP weekenders. I cannot find t
I notice some versions of switching supplies (probably for Eu consumption)
have an additional clamp-on ferrite on the output cable. Some supplies only
have terminal posts, but it is a good idea to put a clamp-on ferrite on the
cable right up to the terminal posts, ideally it should be in a meta
I advise against bending the wires of axial components against the component
body; this can lead to stress fractures at the joint depending how much
force you use. I use fine needle nose pliers to hold the component wire
near the body, then bend the wire sharp against the pliers. It's a small
I use a very old hair drier (the quiet type before series wound motors
became popular). I set the heat and blower to low so that I get a warm,
gentle air stream over my work area. I've found that without the small
amount of added heat my hands become chilled, which is not just
uncomfortable b
I have quite a few power supplies and I think they are all isolated from
ground, ie the metal enclosure is safety grounded to the house mains supply
(because they are Class 1 equipment in which the grounded chassis provides
the main barrier to shock hazard), but both low voltage output terminals
For sheer inginuity, I just love the clothes line dipole in QST a few years
ago. If you have the facility to slide the feed point back and forth using
a full loop (folded dipole), perhaps with a remote controlled motor, one
feedline and one loop of wire will do a lot of multi-banding for you an
I always advise using a non-resonant length for a multi-band doublet with
tuner combination. There's a magic figure: multiples of 44ft, 88ft... that
Cebik came up with which is a good compromise with impedance matching, ie
not horrendously high or low X and R. I notice no-one has mentioned the
Your comment about spacing off the core is interesting: my Drake AMU has an
attached balun which is constructed with the wire wound on a former which
stands the turns off the core. The wire is 1mm diameter bare wire and does
not touch at any point. I have never seen this anywhere else. The co
Dear Doc
Given the 5BTV and similar trap verticals have reduced performance on 80m
and nil on 160m, do you have a scheme for using the whole elevated system as
the antenna on these low bands, eg a tuning/switch box in the support pole?
David
G3UNA
- Original Message -
From: "James D
hat feeding the pole from the top would be
workable and perhaps more efficient: I've seen this done with a beam and
tower arrangement in which the beam is isolated from the tower and an auto
tuner fitted between.
David
G3UNA
- Original Message -
From: "James Duffey" &
Brilliant video. Perhaps Elecraft could have a small library of these for
all those tricky little manoeuvres that would help builders.
David
G3UNA
- Original Message -
From: "Ron D'Eau Claire" <[EMAIL PROTECTED]>
To: "'Elecraft Reflector'"
Sent: Thursday, March 08, 2007 12:08 AM
Sub
Yes, Fred, but you still have to tin the wire. I guess you save on solder
and get less fumes which is a consideration.
David
G3UNA
- Original Message -
From: "Trail Fox" <[EMAIL PROTECTED]>
To:
Sent: Friday, March 09, 2007 1:48 PM
Subject: [Elecraft] Tinning toroid leads
FWIW I to
I have both models of the 259 and the AEA analyser. The latter is a
wonderful toy and great for filters, but not easy to use in the field on
antennas, I think because the data transfer rate is so slow and the screen
is not easy to see. The 259s are very good for tweeking antennas, though,
pr
Hi cousin Bob
Another idea is a blast from the past: it was common to use a very thin
piece of rubber band inserted before the screw. It's a bit fiddly to get it
in but it worked well in old IF transformers.
David
G3UNA
- Original Message -
From: "Bob Cutter" <[EMAIL PROTECTED]>
Good article in QEX on your system.
David
G3UNA
- Original Message -
From: "Jack Smith" <[EMAIL PROTECTED]>
To: "Elecraft Discussion List"
Sent: Friday, March 23, 2007 6:49 PM
Subject: [Elecraft] K2 Integration with Z90/91 Digital Panadapter
I have released version 2.0 of Z90-Cont
Whatever happened to plastic knitting needles that we would shape?
David
G3UNA
- Original Message -
From: "Geoffrey Mackenzie-Kennedy" <[EMAIL PROTECTED]>
To: "Ron D'Eau Claire" <[EMAIL PROTECTED]>
Cc: "Elecraft Discussion List"
Sent: Sunday, March 25, 2007 5:13 PM
Subject: Re: [Elecr
It sounds like a malfunction in the start-up circuit. How is the psu
switched off? My guess is it is not an isolating switch on the supply
input, but some low power circuit that sends a signal to the start-up
circuit. This is not an area to be tackled lightly, as it is at mains
potential.
Hi Jack
You may well be right about the origination of "conformal coating" but it
was quickly taken up by other services who saw its benefits. I agree that
for MOST amateur situations it's probably over the top, but one of the
respondents to this thread has done it because he feels it necessa
Can anyone identify why some PL259s do not fit some SO239s ? There is a
distinct difference in thread. I have never known Ns not to fit properly,
but there appear to be 2 types of PL/SO out there.
David
G3UNA
- Original Message -
From: "Ron D'Eau Claire" <[EMAIL PROTECTED]>
To: "'
I'd say that is "cost effective" design as long as the user is aware of the
limitations. If speech compression is used extensively, then the average
current will rise and the psu might fold back to protect itself.
Interesting idea, certainly good for cw. Lightweight is good for
dxpeditions.
I'm surprised to hear that. I understand it was the aircraft industry that
developed crimping as a more reliable way to make joints than soldering, at
least for regular wiring in aircraft.
Having seen a lot of bad soldering and assembly of PL259s done by my amateur
friends, I have a mind to b
As long as you don't solder BEFORE crimping. I came across a vending
machine manufacturer that dip-soldered their wires before crimping which
negates the advantage of the gas-tight joint and is actually worse because
soft (lead) solder moves under pressure and would loosen in time.
David
G3UN
And precisely how do you explain the mile-wide non-volatile smile on your
fizzog ? Ladies of the female species just KNOW when there's something
going on. Come clean from the start or you are TOAST.
David
G3UNA
- Original Message -
From: <[EMAIL PROTECTED]>
To:
Sent: Saturday, A
On this side of the pond we know the K series as telephone boxes. The K3
was a smaller concrete version of the K2, 12000 made. :0)
http://www.redphonebox.info/history.htm
- Original Message -
From: <[EMAIL PROTECTED]>
To:
Sent: Sunday, April 29, 2007 8:25 AM
Subject: Re: [Elecraf
Is this viable?: Remove the KPA100 from a K2 and put it in its own box (as
has been done many times by lots of folk) but operate it from the K3. In
this way operate SO2R with the remainder of the K2 as the second rx for full
SO2R and save a little on the cost of the built-in PA for the K3.
D
Single Operator 2 Radios. In some contests the rules allow 2 radios to be
used by one operator. This enables the contester to listen to 2 bands at
once which is useful when one band is a bit slow and all you are doing is
sending CQ. You can then be monitoring another band, perhaps a particula
G3PJT had a lashed up external keypad of some sort for one of his K2's. He
showed it at the RSGB HF Convention last year.
Perhaps if Bob reads this he will jump in.
David
G3UNA
- Original Message -
From: "Tom Zeltwanger" <[EMAIL PROTECTED]>
To: "Bill Coleman" <[EMAIL PROTECTED]>
C
Off Topic but with so much expertise flying around I thought I would ask how
mechanical filters compare with crystal filters.
I think they were fairly low in frequency (455kHz?), so, not suitable in the
present discussion, but it would be good for our education at least.
David
G3UNA
A friend's coax-fed G5RV worked ok with his 990 (built-in matching unit).
No external "tuner" needed. It worked all bands 160 to 10m: on 160 I made
him a simple switch to short the coax and tune/match against ground. His
needs were modest - no dx, just local chit chat. It was sensitive to coa
I'll be glad when leds take over then we can power the whole house lighting
circuit with transformer isolated 12V and at last move towards an
international standard that is safe and cheap.
David
G3UNA
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Back in those days most of my friends did not even own an swr meter, we
"tuned up" by dipping and loading and worked out the power input to the PA
to meet the regulations.
In later life LV preferred to speak of the ASTU Antenna System Matching
Unit. I prefer to use MU for the box in the sha
BUT if you just want to get out for general rag-chewing, then the coax
version combined with a rig with built-in auto matching makes for a very
simple set-up.
For a local ham with bad arthritis, that's all he wanted, ie push-button
technology, no fiddling with knobs as he put it. I couldn't t
What is the best advice to avoid this? Coax arrestors?
David
G3UNA
- Original Message -
From: "F5UL" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Cc:
Sent: Monday, May 28, 2007 8:17 AM
Subject: [Elecraft] K2, why change?
Hi Doug,
I justalso finished the CWWPX Contest. Asou said th
I find QSK tiring, especially when the incoming audio is loud. The transmit
period I find restful to my ears. On the odd occasion I miss an over and
need a repeat, but not often.
David
G3UNA
- Original Message -
From: "DOUGLAS ZWIEBEL" <[EMAIL PROTECTED]>
To:
Sent: Monday, May 28
From a purely manufacturing point of view, it's a lot easier to make a solid
state amplifier, particularly with surface mount parts and flow soldering on
a production line. Thousands can be made with high accuracy and
repeatability and that alone reduces a major cost centre which is the
manufa
There were one or two interesting signals there last night, one sounded
almost like spark! I prefer a wide setting for most of the time.
David
G3UNA
G4BP/P
- Original Message -
From: "John GM4SLV" <[EMAIL PROTECTED]>
To:
Sent: Sunday, June 03, 2007 10:18 AM
Subject: Re: [Elecraft] R
Normal fuses are rated such that when 2.1 times their nominal current rating
is passed they will break within 30s. So, a normal 20A fuse will not break
until it is passing >40A and even then it will take a long time to go,
enough to fry the rig. The fuse is there to protect the cable when a gr
I am not an expert, but, a kit cannot be evaluated for safety and emc
because as it appears in the market it is just a collection of parts which
cannot be tested. The purpose of CE marking is to allow free marketing
across the EU using harmonised standards; it is not in itself an approval.
The
The first and last time I held solder in my teeth was many harvests ago and
I live to tell this tale: I got the shock of my life which threw me across
the room leaving me quivering wreck and might easily have killed me. I
later learned about "leakage current." Appliances over here are allowed
I got a personal message the same day. No, not automated, personal,
referring to my order.
David
G3UNA
- Original Message -
From: "Phil Wright" <[EMAIL PROTECTED]>
To:
Sent: Sunday, July 08, 2007 2:22 PM
Subject: [Elecraft] RE: "We are not talking about a small amount of
moneyhere
I'd like to add to Larry's note: the current capacities given in the table
indicate the maximum safe current for usual grade of insulation (better
insulation allows higher currents and temperatures). Single wires are
usually graded for their 'suspended in still air' rating and pairing up in a
It doesn't sound so different to 1N4148 if you can deduce the surface mount
version which will probably have similar capacitance. Vrrm a bit lower,
but...for an urgent situation I would just bend one up and try it.
David
G3UNA
- Original Message -
From: "Robie Elms" <[EMAIL PROTECTED
Ah, yes, thanks for the reminder. I think the 'torpedo' refers to
Australia. I got this tip from a QRP manual.
David
G3UNA
- Original Message -
From: "Jeremiah McCarthy" <[EMAIL PROTECTED]>
To:
Sent: Friday, July 27, 2007 4:56 PM
Subject: [Elecraft] Wood bits
How does it compare to the BHI product?
http://www.bhinstrumentation.co.uk/
David
G3UNA
I have no pecuniary interest in either party
- Original Message -
From: "Rob Locher W7GH" <[EMAIL PROTECTED]>
To: "Elecraft Discussion List"
Sent: Saturday, August 04, 2007 7:35 PM
Subject: Re: [E
You could leave one at your remote location (antenna farm) for remote
control and one at home. The problem then arises: which goes where?
David
G3UNA
- Original Message -
From: "Thom LaCosta" <[EMAIL PROTECTED]>
To: "John Huggins" <[EMAIL PROTECTED]>
Cc:
Sent: Friday, August 10, 200
I've just re-read your question. So, the twin lead is not for the feeder,
it's for the arms of the doublet, or possibly both. I presume to widen the
frequency response. There are some interesting ideas for using ribbon as
antennas.
If it's the pale pink variety, the only thing I would advis
This comes under the category "unintentional radiator" and there are legal
limits that must be met. One problem I can see is that the equipment could
be tested and approved without wiring it into a "system" and it might meet
the requirements, but when fitted with all the accessories it may not,
The SSM2165 is a good speech compressor and not expensive. I'm assuming it
will work on data? to bring up the level as required.
You can get a complete kit from www.box73.com DYC-817 (Code 734980)
External dynamic compressor kit for FT-817.
Or from OK1CDJ, but I can't find the link at t
Be easier to find a K3 telephone box.
http://www.redphonebox.info/history.htm
David
G3UNA
- Original Message -
From: "Bruce Prior" <[EMAIL PROTECTED]>
To:
Sent: Friday, September 07, 2007 3:45 AM
Subject: [Elecraft] K3 -- The Mountain
Will somebody carry the Elecraft K3 and operate
27;t
that really a Tardis? :)
Bruce, NM5B
Santa Fe, NM
- Original Message -
From: "David Cutter" <[EMAIL PROTECTED]>
To:
Sent: Friday, September 07, 2007 12:04 AM
Subject: Re: [Elecraft] K3 -- The Mountain
Be easier to find a K3 telephone box.
http://www
What an amazing amount of work you have put in to those units.
Congratulations and thanks for your inspiration.
David
G3UNA
- Original Message -
From: "Benny Aumala" <[EMAIL PROTECTED]>
To:
Sent: Friday, September 07, 2007 8:51 PM
Subject: [Elecraft] Balanced AT
http://www.xs4a
Whatever happened to "silent tuning?" I know it's not entirely silent, but
monitoring across a dummy load with a bridge circuit means the auto
tuner/matcher can sniff the incoming rf and adjust for best match/tune and
then switch to full connection. On most HF bands, say >20m, there might be
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