Ken,
You are right, the Heil HC-4 and HC-5 are dynamic elements. I use Heil's
Proset Plus with the HC-4 and HC-5 elements, and get full specified PEP from
an unmodified K2/100 #3255.
73,
Geoff
GM4ESD
- Original Message -
From: Ken Alexander [EMAIL PROTECTED]
To: Art - W6KY [EMAIL
Lucky you! We Scottish country dwellers shiver in our caves and watch
spiders. What does 'warm' mean?
73,
Geoff
GM4ESD
- Original Message -
From: Don Wilhelm [EMAIL PROTECTED]
To: Elecraft@mailman.qth.net
Sent: Monday, March 20, 2006 3:26 AM
Subject: RE: [Elecraft] cord vs. rick
Martin,
On paper it would not be too difficult to build an IF crystal ladder
filter for the K2 whose stopband attenuation is an honest 100db or better,
with a passband ripple of something less than 0.5db - probably less than
0.25db. But the filter would require good quality high Q crystals,
Martin,
Bad mistake! The mixer that is mentioned in my last paragraph is a TUF-1 of
course, not a TUF-3. Sorry about that, cannot type!
73,
Geoff
GM4ESD
- Original Message -
From: Martin Kratoska [EMAIL PROTECTED]
Cc: elecraft@mailman.qth.net
Sent: Saturday, March 18, 2006 4:40 AM
Howard,
Although I follow your thinking, I speculate that the MC1350 IF amplifier
and NE602 Product Detector in the K2, and possibly Q25, could be generating
much of the nuisance audio hiss, even when the RF Gain is turned off.
Unfortunately I cannot power up my K2 at the moment to check this
John,
Although I have no 'hands-on' info about the Proset K2 or Handi Mic, I have
been using for about 2 years a ' genuine ' Heil Proset Plus Heasdset / boom
mic (HC4 and HC5 elements) with my K2/100 and other rigs. With the mic about
3 inches from my mouth, my K2/100 #3255 delivers 100w PEP
Vic Rosenthal wrote:
Well...actually some K2/100's draw more power. Mine does take up to 20
amps on some bands.
.
Hi Vic,
Well I also opted for a 35A 'linear' supply for my K2/100 because I did not
want the
Rob Locher W7GH wrote on Friday, January 27, 2006 9:56 PM
I've used the Rework Eliminators, and the only trouble I've had with
testing and alignment is remembering to plug the Rework Eliminators in
first. (You shouldn't leave them in when installing parts, because some
are easily damaged if
Me too (third it)!
It would be useful as well if one could go from say FL4 straight back to FL3
(for one VFO) without having to go to FL1, then FL2 to get back to FL3 - or
am I missing something and it can be done?
73,
Geoff
GM4ESD
Tried to post before but the 'policemen' are blocking me.
Sorry again about using bandwidth, but the bouncers don't want to play
fair!! So I am trying to post again, using a message that I had sent
previously that might have been lost.
73,
Geoff
GM4ESD
--
Vertical full sized dipoles
Sorry about this. The policemen are at it again.
Geoff, GM4ESD
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Morning Ralph,
Thank you for sharing the information about these devices, very interesting!
I must confess that I have for decades used NEW sparkplugs with their gaps
suitably set for the maximum peak RF voltage on the line, assuming a high
VSWR, plus some, and with separate static drains
Ron D'Eau Claire wrote:
Many times! Only 1,000 vdc or so on there and enough RF to create a burn
that hurt like @[EMAIL PROTECTED] for a month if it found bare skin!
...
Yes, but the arc was very
Test - please ignore. Sorry abt QRM.
Geoff, GM4ESD
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Kevin,
I took the plunge and bought the Heil Pro-Set Plus headphones / boom mic
(HC4 HC5 elements switchable) some time back, and have been very pleased.
The headphones are very comfortable indeed, and no bent /sore ears-head
after wearing them for hours at a time e.g.dabbling in a CW or SSB
Evening Mark,
Yes my K2/100 #3255 delivers as is without any mods, but it is good to know
about R14 in case something gets tired, thanks. When there was the
discussion about the effect of inductive resistors on the KPA100's gain, I
dug into mine. Although its power output on CW and SSB was
Hello Jeff,
Have you tried measuring the voltage at the wiper terminal of R1 (Control
Board) or RP6 pins 4/5? These points are all connected together along with
U2 pin 5, so you should get the same voltage +- a couple of millivolts at
each of these points. The voltage at all these points
Morning Thom,
This type of antenna element has been around for a long time, since the late
1930s perhaps before, and bears the family name 'Normal Mode Helix'.
Two rules of thumb. For an element that is electrically a quarter wavelength
long, the overall physical length of the helix should
Was this not the antenna that the Old - Old- Timers used to call the 'Thirty
up thirty out', each leg being thirty feet in length?
73,
Geoff
GM4ESD
- Original Message -
From: Ron D'Eau Claire [EMAIL PROTECTED]
To: 'Vic K2VCO' [EMAIL PROTECTED]; 'Elecraft Discussion List'
On Monday, 15th August 2005, Ian Maude G0VGS wrote:
I run a Heil HC5 element with my K2 (#4044) and the mods I used are
simple. I changed out the capacitors on the SSB board to give me the
2.2k mod and changed R14 on the board to 10k. These 2 mods are all it
took to get my audio sounding
Ed, WA3WSJ wrote:
Recently I compared a 40m dipole fed with 300 ohm ladder line
up 20 feet to a ground-mounted vertical on a 100 foot cliff at Turkey
Point Lighthouse, MD. The vertical beat the dipole by around two
S-Units.
Bill, W4ZV wrote:
Interesting. I had just the opposite
The switch in my headphone jack fell apart within a few months even though
the jack body was still firmly in place. I do use a small right angle plug
plus quite long light weight leads to an inline 1/4in jack, and seldom
unplug the headphones. IMHO the jack is too close to the AF gain control,
Ron, AC7AC wrote:
AHA! You've uncovered another variable in the equation. As a certified O.T.
CW operator, I set the AF gain at a level just below where the audio channel
noise is apparent in the phones and control the volume of signals with the
RF GAIN control!
So my fat fingers never crash
On July 30, 2005, Kevin KD5ONS wrote:
When you find a replacement could you please list it and its part
number on the Reflector? I would like to replace mine with one that is
far more sturdy so it will last longer than it did the first time.
I agree with Vic, and do just that with the KAT100.
73,
Geoff
GM4ESD
-
Vic Rosenthal wrote:
tom.w3qs wrote:
Would it be wise, prudent, useful, great idea, stupid - you pick 'em - to
put the K2 Dummy Load on KAT Ant 2 and the regular antenna on
Hi Vic,
Have you met an Evasive Noise Blanker? It won't send 'QRZ test' at you
either!
73,
Geoff
GM4ESD
Vic Rosenthal wrote:
My experience over the past 49 years as a ham tells me YES! I want this.
Noise of various types is the biggest problem I face in my day-to-day
hamming, and it is
Michael,
My K2 has a birdie a few kHz higher which is caused by one of the receiver's
spurious responses hearing the second harmonic of the KPA's HV bias
oscillator, which in my KPA100 runs at 16.289 MHz. In my case the bias
oscillator's harmonic gets to the receiver via the loudspeaker cable
, many thanks.
73,
Geoff
GM4ESD
- Original Message -
From: wayne burdick [EMAIL PROTECTED]
To: Geoffrey Mackenzie-Kennedy [EMAIL PROTECTED]
Cc: Elecraft Discussion List elecraft@mailman.qth.net; [EMAIL PROTECTED]
Sent: Saturday, July 16, 2005 6:21 PM
Subject: Re: K2 birdie at 28.265 MHz
Now Paul, that's quite enough!! Happy be those who speak with SSB, for they
are the enlightened. g
73, Geoff
GM4ESD
K2/100 + KSB2 #3255
Paul Gates wrote:
See, that is what happens when you start messing with SSB. Stick to CW!!
HI!
Paul Gates
K1 #0231
KX1 #1186
XG1
[EMAIL PROTECTED]
Welcome Dave,
Not been here too long myself, but you will meet a lot of super and very
helpful folk who go a bit daft when CERTAIN subjects are discussed!! I don't
have enough experience with the K2 to answer your question but I'm sure
that you will receive informed answers.
Enjoy your K2
Don, W3FPR wrote:
Of course there are those who still advocate the broccoli ring solution
G
-
Keep talking Don, there is a field of the stuff here, nice and green looking
for good homes G
73,
Geoff
GM4ESD
Hi Gerhard,
Not an answer I'm afraid, but I recently opened up my KPA100 to try to find
the whole answer to the low power out problem. Even though my KPA100 puts
out 100w on all bands, I don't like something lurking ready to bite! I
immediately noticed that smell as though something had been hot
Hello Ted,
At the risk of continuing this thread for too long, brief comment. IMHO you
hit on the main culprit causing problems on 20m / 30m - the inductance of
R19 and R20 as supplied.
If you like, I can go off list to discuss with you your other comments. I am
not surprised that you could not
The Trap theory makes a lot of sense, and Don's comment about low
tolerance C80 and C81 capacitors would seem to support it. But if the
resistors in parallel with C80 and C81 are the only Inductors that form
the L part of the traps, I would have thought that by simply changing R19
and R20 to so
Their posting could not find Scotland, has now g
73,
Geoff
GM4ESD
- Original Message -
From: Dan Barker [EMAIL PROTECTED]
To: Elecraft elecraft@mailman.qth.net
Sent: Thursday, June 23, 2005 8:23 PM
Subject: FW: [Elecraft] KPA100 power on 20m/30m, update
But they did, several
is an unforgiving mistress!!
73,
Geoff
GM4ESD
- Original Message -
From: W3FPR - Don Wilhelm [EMAIL PROTECTED]
To: Geoffrey Mackenzie-Kennedy [EMAIL PROTECTED]
Cc: Elecraft Discussion List elecraft@mailman.qth.net
Sent: Thursday, June 23, 2005 9:58 PM
Subject: RE: [Elecraft] KPA100
Serious question Bill. If you are not walking along a clear surface like a
sidewalk or in a play park, but are on the 'Trail', do you not have problems
with the counterpoise becoming tangled up in things, or do you only operate
when 'on the trail' while standing still after 'throwing out' the
Hello Mike, you wrote:
Suppose you were out to sea, a long way from any noise, would any of those
tiny hand held sets still work like the 6m, 2m, 70cm or do they need to use
repeaters on land to go very far.
It would be very difficult
Is Andy Morrison on this list? If so please send me mail without any
attachment, your earlier one blocked.
Sorry Eric, can explain off-list if you so wish.
Geoff,
GM4ESD
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You must be a
When i am trying to work DX, i will stop and sling the drag wire around
and
point it
at the DX station to decrease my antenna loss.
The single drag wire counterpoise is directive.
Paul w0rw
---
This guy is dangerous! Hope I hear
Jim, KM5M, wrote on June 13, 2005, at 1:42 PM
Also, I'm still searching for a definitive answer to the question of
whether
it is appropriate to use Q-signals in phone transmissions. For example,
is it
really appropriate to say QRZ? this is K5XXX. Or would it be correct to
say Who is calling
Rich,
I would like to second Ron's (AC7AC) comments about tuners. Personally I
would stay away from 'T networks' for use in antenna tuners, and use the old
fashioned link coupled form of balanced tuner. T networks can be mistuned to
provide a 50 ohm load for the transmitter, but not deliver much
Morning Kevin,
Was on at 0230Z or thereabouts and heard Tom N0SS for sure, RST 229 through
very strong Russian SSB QRM off the back. The Russians were not amused by my
CW, don't blame them, but fortunately I know one of them reasonably well (he
runs 2kW into a 4 element 40m monobander at 30m plus
Just testing. Has D.List gone quiet?
73,
Geoff
GM4ESD
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Mackenzie-Kennedy [EMAIL PROTECTED]
Sent: Sunday, June 05, 2005 2:40 PM
Subject: Re: [Elecraft] OT
Not really, Geoff. It's just that the yanks don't get up until lunch
time in Scotland.
73
David G4DMP
In a recent message, Geoffrey Mackenzie-Kennedy
[EMAIL PROTECTED] said
Just testing
David,
From what you say I get the feeling that the BL1 is not providing the
antenna plus open wire feeder with a true balanced load, with the result
that the feeder is also acting as an antenna, picking up noise from 'local'
sources which is not cancelled out. Although the KAT100 could provide
Morning Colin,
My K2 is #3255 and the KSB2 Build is Revision C-3. The envelope that
contained the KSB2 crystals is marked 3.7 (as was the envelope containing
the K2's IF filter crystals), and the KSB2 crystals are marked 4.9136. I
have not made any modifications From 'swept' measurements the
Ron,
Thank you for your comments. Forgive me if I split up my reply.
On May 28, 2005 at 3:26 PM you wrote:
The issues with opposite sideband suppression that Geoff raised do not come
up because there is no need or desire to move the lower edge of the audio
bandpass closer to the carrier
You wrote on May 17, 2005 10:49 PM
(Well, OK, we designed the KX1 and could be exaggerating :)
--
You are forgiven if you were!! There is a Continental station some 1000
miles from here that I chat with from time to time
Rolf,
About using the Heil Proset Plus, I forgot to mention ALC behaviour that
Mark, NK8Q, mentioned. With my particular K2/100 #3255 and with no KSB2
mods, the ALC indicator occasionally flickers when I speak in a normal
voice. If I speak louder, it shows a bar or two most of the time. I would
Rolf,
My K2/100 is #3255 and I use the Heil Proset Plus (normal version) without
any modifications to the KSB2. Get full spec PEP on all bands speaking in a
normal voice which the XYL says is quiet. Sorry I cannot comment on the
other mics.
73, Geoff
GM4ESD
- Original Message -
From:
Good Evening Aki,
Is the frequency of the *hum* modulation the same as the frequency of your
sidetone, or one of its harmonics or sub-harmonics?
73, Geoff
GM4ESD
- Original Message -
From: a.yoshida [EMAIL PROTECTED]
To: Elecraft@mailman.qth.net
Sent: Friday, May 06, 2005 11:21 PM
I wonder what you would have heard if you had used the ship as a grounded
antenna top fed. Too much noise probably. Must have been fun.
73,
Geoff.
GM4ESD
- Original Message -
From: Fred Jensen [EMAIL PROTECTED]
To: NCCC Reflector [EMAIL PROTECTED]; Elecraft Reflector
Is anyone, especially in the UK, experiencing any difficulty with mail to /
from the Discussion List? During the past day or two I have received two
sometimes three copies of most List postings, and have had two connection
refusals. I am pretty sure that the problem is not at Aptos, and my other
Hello Paul,
I don't know Paul, but going by the K2 serial numbers there must be some
4500 K2s out there, and that's a lot of one product especially for a young
Company. I recall the long hours of discussion spent at RCA working out how
many of a certain type of SSB transceiver should be built in
Morning Bill,
Heck, you don't even need the heat shrink. A wire tie or two on each
end keeps them secure to the coax so they don't slide.
I currently have 10 of these beads choking the coax to my A3S. I used
10 beads because I intend to add the A743 40m kit eventually and needed
the extra
Hi Bob,
Strange skip on at 0200Z this morning. I had two receivers tuning between
7035 and 7050 and all I heard were East Coast USA, K8, a VE3X? (on 7045),
Central America and Martinique, Eastern Europe,Italy and some RTTY,but not
you !!! Wish I had. Saturday / Sunday 40m was hot here.
73,
Geoff
Agreed. I would like to see a complete tech spec not just a sales spec, and
have a look inside the amp, before smiling at the bank -and you know who.
Geoff,
GM4ESD
- Original Message -
From: N2TK, Tony [EMAIL PROTECTED]
To: Elecraft (E-mail) elecraft@mailman.qth.net
Sent: Monday, April
Good Morning Kevin,
Don't give up on 40m propagation yet !! Last night (Saturday) stateside
signals were very strong (East coast to Central states) exchanging Party
reports. There were some West coast signals later, weak but readable when in
the clear. Heavy RTTY QRM 7.025 up. I had been
Kevin, I think he has!! Strange cooking sound heard around 7.033 !
Geoff, GM4ESD
Kevin wrote:
Don't try transmitting that way! Ouch!!
Kevin :) KD5ONS
On Fri, 22 Apr 2005 23:28:00 -0300, Alan Beck [EMAIL PROTECTED]
wrote:
Using my pinky finger as an antenna, I heard an LZ1 on
Ron D'Eau Claire wrote:
One BIG factor is whether you are using a balun in the system. I've yet to
find a balun that isn't unpredictable and frequently lossy when used in a
feedline with high reactance, that is any balanced feedline with an SWR much
above 1:1, no matter the type.
For just that
Interesting thought Marinos. There are receivers (non amateur) in which any
DSP,s ( if there is one) main job is to provide a large number of audio
filter bandwidths and some additional hetrodyne removal. The removal of QRN
noise and QRM within the IF filters passband is done in the early stages
Agree about coverage, but 350 - 500kHz is ample for my particular interests.
I think that I chose an IF of 14 MHz for 6m and 2m for reasons of receiver
spurious responses or transmitter spurii, or both, but as the choice was
made about 50 years ago I won't swear to this before re-running an
Julius, your Grandpa Aesop would not be pleased about Bugs! OK, OK,
Turtles are up-market Tortoises.
73, Geoff
GM4ESD (Turtle)
- Original Message -
From: J F [EMAIL PROTECTED]
To: Elecraft@mailman.qth.net
Sent: Tuesday, March 22, 2005 1:44 PM
Subject: [Elecraft] Tortoise the Hare
Sorry, I had to post twice.
Geoff
GM4ESD
- Original Message -
From: Geoffrey Mackenzie-Kennedy [EMAIL PROTECTED]
To: Earl W Cunningham [EMAIL PROTECTED]
Sent: Sunday, March 20, 2005 7:41 PM
Subject: Re: [Elecraft] magnetic fields and phase noise?
Earl,
How strong was Vic's carrier
Hello All,
It is noticeable on this Reflector that occasionally folk become annoyed by
any critical comment about the K2 in its various configurations, e.g K2/100.
Although such a reaction is understandable, we are human, it might be useful
to take a look at what underlies critical comment. As I
The level of phase noise should be in dbc/Hz not db/Hz. Cannot type,
sorry.
73,
Geoff
GM4ESD
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Another example is the Collins 95S-1A produced some years ago. This receiver
is 'Software Driven' and covers the range from 5 kilohertz to 2 GHz in steps
down to 1Hz. Its architecture is hybrid. Antenna signals between 5 kHz and
30 MHz are upconverted to 51.2 MHz and directly converted from there
On March 14, 2005, Bob N4HY wrote:
considering it was a
stinking SSB contest.
Now, now Bob! Tut!!!
73,
Geoff
GM4ESD
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Morning Stewart,
Many congratulations!! And putting your added filter ahead of the Varicap
tuned filter must prevent the varicaps being affected by the sum of strong
signals from the post mixer amplifier, in a wide bandwidth.
73,
Geoff.
GM4ESD
- Original Message -
From: Stewart Baker
Hello Martin,
Sincere congratulations, fantastic!!!. Many thanks for the inspiration and
kick-start as well. The local CW has drifted from reasonable down to
pathetic due to a long absence.
Nice to see you again.
73,
Geoff.
GM4ESD
___
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Morning Lyle,
Lyle Johnson KK7P wrote:
...Assuming the use of strong mixers (+50dbm)...
Hmmm. +50 dBm = +20 dBW = 100 watts! That's some mixer!!!
Could never get a job typing ! It should have read '( with an
IP3in of +50dbm). The mixer is the H Mode mixer developed by G3SBI
Hello Stewart,
Tail end IF Filter: Given that the prime purpose of the 2nd IF Crystal
filter is to reduce wideband noise created by the MC1350 IF amplifier, which
comes out as audio hiss, yes a better filter would do a better job
provided that it is wider than the SSB filter. BUT I suspect that
Fraser,
This is a very very long shot and probably daft! I see that the current
drawn on 160m tracks that drawn on 80m until the RF output passes 80w.going
up.From this I think that it is safe to say that the bad KPA100 is working
as it should to that power output level. Above that it is either
After having fingers burnt while designing very 'srtrong' receivers, may I
add comment.
IF filters with very tight skirts do allow the recovery of very good SSB
audio or CW. To do this the filter must NOT have sharp corners at the top of
its 'response', the corners should be a little rounded.
Intersting ideas. If you did enlarge the SSB board to get all the bits in,
in which directions would you enlarge the exixting board?
IMHO it would be essential to contain the new board in a 'tin' box in turn
mounted on metal, which raises the question of access to test points etc on
the RF board,
This is a horse of a very different colour!! We are now talking
'RFCompression/Expansion' rather than 'RFClipping' after the modulator, a
little bit like AGC in the receiver or ALC in the Tx, but with low level
signals boosted. One approach is to generate a good SSB RF signal (modulator
plus
.
73
Stewart G3RXQ
On Wed, 2 Mar 2005 08:11:54 -, Geoffrey Mackenzie-Kennedy wrote:
Intersting ideas. If you did enlarge the SSB board to get all the bits in,
in which directions would you enlarge the exixting board?
IMHO it would be essential to contain the new board in a 'tin' box
with the shorted
turn problem should the enamel come adrift later on.
Adage - 'Give it your best and it will reward in kind'
73,
GeoffGM4ESD
- Original Message -
From: W3FPR - Don Wilhelm [EMAIL PROTECTED]
To: Geoffrey Mackenzie-Kennedy [EMAIL PROTECTED]; PA3GYU
[EMAIL PROTECTED]
Cc
Fully agree with Don about those 'holder thingys'. For large PCBs I use a
method similar to Don's, but attach hexagonal spacers through the PCB holes
that will be used for mounting the PCB. At each PCB mounting hole I thread
through the male portion of a spacer from one side of the PCB, and pick
Hello Michael,
Because the QRN here is very low, I use the preamp most of the time on 40m
when DXing, birdies are important to me, and for some time I have been on
a Birdy Hunt.
If all the oscillators in K2 are working well and on their correct
frequencies, it is not possible to move a birdy (in
Hello Tom,
Having spent countless hours in the company of members of the 6146 family,
from their conception, please be assured that even with zero RF signal drive
a 6146B will be undamaged provided that 1) Supply voltages are within
specified limits 2) Real DC bias is used for the control grid
Julius,
IF I have an antenna of sorts back up and IF I can operate and IF non-US
stations can join in, would like to play for a while. When is it? Rules yes
please.
73,
Geoff.
GM4ESD
- Original Message -
From: J F [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Friday, February
minus.
SSB 40m OK, we will find a gap-
73, Geoff
GM4ESD
From: J F [EMAIL PROTECTED]
To: Geoffrey Mackenzie-Kennedy [EMAIL PROTECTED]
Sent: Friday, February 25, 2005 8:30 PM
Subject: Re: [Elecraft] Elecraft QSO Party
EQP Logging Software:
Windows Version by Toby, DJ7MGQ (be
Palm OS Version
My K2/100 is s/n 3255, the same vintage as yours. For USB/LSB I set the
BFO frequencies the hard way by manually plotting the KSB2 filter's
response, and placing the BFO where best sounding transmit and receive audio
was obtained. It turned out that unwanted sideband (close in and far out)
Hearty congratulations Dave. You are right, persistence with a BIG P - and
skill. Will be watching this space for the announcement of your 300th errr
country.
73, Geoff
GM4ESD
- Original Message -
From: Dave Sergeant [EMAIL PROTECTED]
To: [EMAIL PROTECTED]; elecraft@mailman.qth.net
Sent:
I hope that the ARRL and RSGB - and others - see the comments about
protecting connectors that have appeared on the List, sort them out and
include the fine details of the various methods in future handbooks,
especially Antenna Handbooks. Or do I have a reading problem?
73,
Geoff.
GM4ESD
Bob, G3VVT wrote:
Yes, it does work.
However there is a downside in that the silicon grease prevents most kinds
of tape adhesive sticking to the connector for providing external weather
proofing. The only exeption to this may be the greased fabric tape (Denso
tape)
used in waterproofing
Morning Marinos,
Very interesting thoughts. There must be a huge pool of technical knowledge
and practical know-how amongst Elecraft's customers, a powerful combination.
Now if we could also eliminate storm static QRN - a tough nut to crack !!
73,
Geoff GM4ESD
- Original Message -
Rolf Moberg wrote:
N is ofter water tight. Can you find PL-259 which can be put into water
for 24 hours? And get adequate return loss measurement results afterwards?
Also Rolf, with unprotected PL-259 connectors water / moisture can get into
the coax's braid and you don't know that you have
Vic Rosenthal wrote:
Part of correctly installing a PL259 outdoors is waterproofing it! I have
used
both coax seal (for those who don't know, a gummy rubber-like substance)
and
regular electrical tape coated with liquid electrical tape, with
success.
Quite agree Vic, which is why I said
Greetings Folks,
An Evasive noise blanker is on my wish list. This is the system where the
noise blanker receives noise from out of band and none of its circuits
(except for its input tap off and the IF Gate) are in the main signal
path. Best done when you can tune the noise blanker receiver a
Morning Eric,
Would be good to see a Silent Tune design of Antenna Coupler replace the
KAT100 etc.eventually with a few milliwatts not watts going out during
tuning of antenna system. The Tx could be running full power (or less). We
have enough Tuners (deliberate or otherwise) who always choose
Don't want to drag this out, but I am with you Ron. I find that the warts
give the K2/100 an unfinished look, stands out like a sore thumb against
most other gear in the shack. I hope that any new products that might come
from Elecraft will NOT have warts.
73,
Geoff GM4ESD
- Original
Gary,
Specs would also need to address possible RFI problems caused by MUX etc,
transmit and receive. Can be a problem if design is skimpy, electrically and
mechanical. But great idea, if relays don't wake neighbours.
73,
Geoff.
GM4ESD
- Original Message -
From: Gary Hvizdak [EMAIL
Hello Rolf,
Another topic. My headset is Heil Pro Set plus, normal version (not Icom
version). Could it be used with K2?
I have always used a Heil Pro-Set plus, normal version, without any
modification made to the K2. Get full 100W PEP out on all bands, speaking in
normal voice, and often get
Hi Larry,
Defender of the Multiple Conversion Faith charging in !
In the meantime, here's a concept I have been toying with building. The
R-388, like most Collins gear, uses front-end converters to shift a
whole band segment so that the rest of the receiver becomes a tuneable
IF. This brings
Two approaches to dealing with transmission lines that have been of great
help to me at various locations in substantially reducing or usually
eliminating RFI when using power at HF or VHF are:
Coax - Bury as much of the run as possible, as deeply as possible,
although even a few inches down is
Welcome Ted,
Sorry, biut I cannot help on this one as I have yet to find out what it is
all about. The old problem, time !!
Have fun building and then using your KPA/100, I'm sure you will. Mine went
together like a piece of cake thanks to the great job done at Elecraft. And
the folk on the
Morning/ evening everyone.
Could somebody please tell me if it is safe to operate the K2's Control
Board (for the board and bits) on its own outside the K2 from a regulated
12V supply fed to P3 contacts 1and 2 and ground pin 7 etc? I would put a
load on the LM380 AF amp to keep it happy.
73,
701 - 800 of 859 matches
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