Does reducing bandwidth using the Hi and Lo cut invoke any roofing filters
as the appropriate bandwidth is reached?
David
G3UNA
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Subscriber
Yes, Peter is still the reviewer and we have regular reviews of the latest
and greatest, but we don't know in advance.
David
G3UNA
Sherwood: done
ARRL: done
RadCom: ???
Does RadCom have a K3 for testing?
I dropped my sub some time ago...is Peter Hart still the reviewer?
de Doug KR2Q
Somebody once said Don't let patriotism get in the way of a good decision
or words that effect. I think they were talking about the Buy America
Act. Whatever happened to that?
My $ are going to Elecraft - a foreign company.
David
G3UNA
___
Yes, but, the antennas were some distance apart and they had very good
filters in their antennas. Don't try this at home... unless you have a
similar set up.
David
G3UNA
They said The outstanding receiver and transmitter characteristics
allowed us to run two positions simultaneously on
Here's another system:
http://radio.bhinstrumentation.co.uk/html/sound_file_demonstration.html
David
G3UNA
What you really need is a method of identifying the actual ssb speech
waveform, extracting the noise
from it leaving the signal in the clear. There is a company in Germany
that
For a new rig to be so bad, he will presumably want it repaired. My first
thought would be to email Elecraft not Eham.
David
G3UNA
The reviewer (Solardx, no call sign) gives a very bad transmitter (SSB)
review. He claims lots of splatter and ineffective speech processing as
well as high
John
I wondered what filter bandwidth settings you had. A narrow bw of course
reduces the noise getting to our ears. How did you handle cw and ssb in
that respect?
David
G3UNA
The N0SS demo is very impressive. The noise sounds like what I have here
in
the city suburbs most (all) of the
I don't know what level QRN crashes add to the general noise level: it
would be interesting to know what difference the roofing filters add to the
dsp filter in these condx.
David
G3UNA
The local noise level on 80 shows up as anywhere up to S7or 8.
With ATT ON, it still shows on the
Most 'ordinary' leds need about 20mA. Calculate a series resistor assuming
the led will have around 1.5 to 2V or so across it (it depends on colour).
You can find out what the actual voltage drop is after you've fitted the
resistor by putting your voltmeter across it.
If the supply to the
For verticals there's a 2 or 3-fold effect:
1a vertical over sea water will have very much reduced losses in the
near field, ie close to the antenna so increasing its efficiency, ie raising
the 'power output' compared to a land situation
2the increased conductivity in the far field
Over here in Eu there's an added reason: less tax on a kit
David
G3UNA
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It would be good for the wider amateur community if someone could make a
recording of that.
David
G3UNA
Good news indeed about the K3 being at the head of the performance list -
Congrats to the Elecraft folks! Thought I would mention that Rob Sherwood
will be giving a talk tomorrow (Tuesday)
This phrase has been attributed to Churchill, Shaw, Wilde, Russell and more
I dare say in one way or another.
David
G3UNA
David Yarnes you are my hero of the day! Good call! Ian is so right two
countries seperated by one language
countries separated a common language
Charles
What band were you operating with the BCI problem?
David
G3UNA
I got #309, factory built, into service. First contact was VP6DX barefoot.
First impressions (citing problems only):
-AGC does not clamp down on short duration pops/tones/blasts of toned noise.
-Stepping thru all 5
Hi Trevor, thanks for that.
This is an interesting programme, particularly for those without on-board
processing, but I was hoping there was a way of evaluating a processed
speech pattern without having to listen to it, ie completely objectively.
Let's say I have a defect in my hearing (who
It's not just vhf contesters who have a problem, we also have 59+60 to 66dB
signals from broadcast stations on 40m (and don't forget those nasty
sidebands)
-10 to -5dBm is not unusual from a high dipole.
David
G3UNA
snip from AD6XY:
This is excellent news, especially that -138 dB phase
Don
I'm really trying to get away from any listening done by ourselves and
substitute an instrument = spectrogram. I just imagine that there is
somewhere a reference that will help identify those bits of the display
which contribute most to clarity and make it easy and more effective to
My K3 has yet to arrive, but, wouldn't this punch come from the voice
equaliser? ie setting the voice band to suit your own voice to peak in the
right place.
David
G3UNA
If I wanted to be controversial (what, me?) I'd say that the K2 SSB audio
is
better than the K3's. The K3 sounds
Listening to one's own speech via another receiver, to optimise one's own
transmit settings still gives a subjective result, *on average*, no better
than another radio listener. Inevitably, it will be a question of personal
taste, unless you have special training. It is true that radio
Don
You mention blow-by to receive strong AM signals. Is the amount of blow-by
covered by the specs? I'm concerned about receiving on 40m here in Europe
where nearby broadcast stations are way above anything amateurs receive
within other bands.
David
G3UNA
snip
Subject: [Elecraft] K3
I recall marine transmitters that I sailed with having big resistors from
antenna to ground to prevent static build up. An old hand told me they got
warm when sailing the Indian Ocean.
David
G3UNA
I severely damaged (burned up!) the receive antenna input board of an
FT-1000D once due to
My guess it will appeal to some non-cw or slow cw operators to get on a
contest, so increasing the numbers having a go. More QRM so need for more
K3s amongst those not using it :o)
David
G3UNA
DOUGLAS ZWIEBEL wrote:
This will change everything. Personally, I don't like the concept, as
The ones I bought (not from Wal-Mart) were good against light rain, but
leaked slightly in driving rain, yours might be different, be worth a try.
You could add some compound on the seal to help with this. On mine the O
ring is a bit too hard and the lip a bit too soft to make a really good
Plus ca change
Some time back, W3FQB (SK) wrote a story called The Man Who Broke The
Bank
about a techno-ham who built a fully automated SS station and proceeded to
make an incredible score. The computer did everything - tuned across all
the
bands looking for new ones, called CQ, made the
Dale
Did you modify the vox for sensitivity or frequency range?
73
David
G3UNA
I'm interested to know if you were using speakers or a boom/headset. The
later DSP radios, IC775 etc when I operated VOX I got a lot of false
trips,
but I don't use headsets. The best vox I've ever used was
Some of the bigger dxpeditions have planned their stations based on
predictions to their (and our) advantage.
For the casual operator, listen and send out a few CQs, you never know who
else is listening, just waiting for someone (anyone) to send a CQ.
David
G3UNA
Some radios seem more susceptible than others. When a newly licensed friend
got arcing and shocks from a Z match feeding a low 210ft doublet, I fitted
2k2 carbon resistors from each feeder to ground.
David
G3UNA
For the future, disconnect the antenna when not in use. The most likely
cause
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' elecraft@mailman.qth.net
Sent: Tuesday, January 29, 2008 11:51 PM
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 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
Message -
From: David Ferrington, M0XDF [EMAIL PROTECTED]
To: David Cutter [EMAIL PROTECTED]; Crafters
elecraft@mailman.qth.net
Sent: Friday, January 18, 2008 9:04 AM
Subject: Re: [Elecraft] List of tips
Yes, or rather Wayne is maintaining a operating Tip page on Ecraft site
and
zerobeat
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
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
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
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
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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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 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
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
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: Elecraft@mailman.qth.net
Sent: Sunday, December 30, 2007
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
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
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
not connect
ALC, some other signal for protection should/could be provided. The problem
yet again is that users might still ignore what the manufacturer offers, so,
the amplifier must protect itself.
David
G3UNA
- Original Message -
From: Joe Subich, W4TV [EMAIL PROTECTED]
To: 'David Cutter
- Original Message -
From: Geoffrey Mackenzie-Kennedy [EMAIL PROTECTED]
To: David Cutter [EMAIL PROTECTED]
Cc: Elecraft Discussion List elecraft@mailman.qth.net
Sent: Tuesday, December 04, 2007 12:46 PM
Subject: Re: [Elecraft] linear amp shutdown (was ALC)
From: David Cutter G3UNA
I take your
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
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 me
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
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
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
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];
elecraft@mailman.qth.net
Sent:
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
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
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: elecraft@mailman.qth.net
Sent:
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
Bob
Wonder if you (or anyone) has mixed the outputs from 2 or more noise
cancellers, perhaps using different antennas for each.
David
G3UNA
- Original Message -
From: Robert Tellefsen [EMAIL PROTECTED]
To: Mark Hampton [EMAIL PROTECTED]; Elecraft list
elecraft@mailman.qth.net
to null
more than one signal.
David
G3UNA
- Original Message -
From: Robert Tellefsen [EMAIL PROTECTED]
To: David Cutter [EMAIL PROTECTED]; Elecraft list
elecraft@mailman.qth.net
Sent: Saturday, September 22, 2007 3:44 PM
Subject: Re: [Elecraft] OT: Anyone use a noise canceller
Tree
What were your filter settings? Sounds like a couple of hundred hertz.
I give 599 in contests just as an acknowledgement of reception, as I would
call it. Do dx stations prefer real reports or is 599 adequate? On the
rare occasions I have been dx, I preferred real reports, but it's a
and
humidity, it gets somewhat tiring and automated responses help a lot.
Thanks for info on the filter settings, I look forward to trying this.
David
G3UNA
- Original Message -
From: Tree [EMAIL PROTECTED]
To: David Cutter [EMAIL PROTECTED]
Cc: elecraft@mailman.qth.net
Sent: Thursday
Occasionally I get repeat entries on my in-box and they keep re-filling no
matter how many times I delete them. I hadn't timed it to say it happens
weekly, but that sounds about right. I went to do my email by webmail
during those occasions and it did not re-fill from that source, but when
I have used a large, shallow aluminium tray similar to the cooker tray
mentioned and I place all components in the tray still within their a/s
bags. With my hands in the tray and the external connections to soldering
iron etc thro wrist strap etc, this is my defence against ESdischarge.
I think we should send a few of the boys aroond ta sort ya oot, laddie
David
G3UNA
- Original Message -
From: Darwin, Keith [EMAIL PROTECTED]
To: Elecraft Discussion List elecraft@mailman.qth.net
Sent: Friday, September 14, 2007 2:25 PM
Subject: [Elecraft] OT: Bagpipes.
Bagpipes!
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
Be easier to find a K3 telephone box.
http://www.redphonebox.info/history.htm
David
G3UNA
- Original Message -
From: Bruce Prior [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Friday, September 07, 2007 3:45 AM
Subject: [Elecraft] K3 -- The Mountain
Will somebody carry the
that really a Tardis? :)
Bruce, NM5B
Santa Fe, NM
- Original Message -
From: David Cutter [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Friday, September 07, 2007 12:04 AM
Subject: Re: [Elecraft] K3 -- The Mountain
Be easier to find a K3 telephone box.
http
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: Elecraft@mailman.qth.net
Sent: Friday, September 07, 2007 8:51 PM
Subject: [Elecraft] Balanced
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
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
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: Elecraft@mailman.qth.net
Sent:
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 elecraft@mailman.qth.net
Sent: Saturday, August 04, 2007 7:35
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: elecraft@mailman.qth.net
Sent: Friday, July 27, 2007 4:56 PM
Subject: [Elecraft] Wood bits
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]
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
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: elecraft@mailman.qth.net
Sent: Sunday, July 08, 2007 2:22 PM
Subject: [Elecraft] RE: We are not talking about a small
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 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.
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
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: elecraft@mailman.qth.net
Sent: Sunday, June 03, 2007 10:18 AM
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
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: elecraft@mailman.qth.net
What is the best advice to avoid this? Coax arrestors?
David
G3UNA
- Original Message -
From: F5UL [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Cc: elecraft@mailman.qth.net
Sent: Monday, May 28, 2007 8:17 AM
Subject: [Elecraft] K2, why change?
Hi Doug,
I justalso finished the CWWPX
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
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
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
___
Elecraft mailing list
Post to:
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 coax
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
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: elecraft@mailman.qth.net
Sent: Sunday, April 29, 2007 8:25
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.
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
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:
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
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
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
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.
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 elecraft@mailman.qth.net
Sent: Sunday, March 25, 2007 5:13 PM
Good article in QEX on your system.
David
G3UNA
- Original Message -
From: Jack Smith [EMAIL PROTECTED]
To: Elecraft Discussion List elecraft@mailman.qth.net
Sent: Friday, March 23, 2007 6:49 PM
Subject: [Elecraft] K2 Integration with Z90/91 Digital Panadapter
I have released
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]
To:
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