Thank you all very much for the answers - I think I understand what I
want from K2 much better now. I hope I'll have as much fun building it
as I had with K1.
--
Alexey Kats (neko)
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I have a brand new, never been opened, E-MU 1212M Internal Digital Audio
System available. $100 delivered in the USA (will ship elsewhere, but will
need to look into costs first). Check or MO prefered...
Thanks,
Julius
-
Julius Fazekas
N2WN
Tennessee Contest Group
http://www.k4ro.net/tcg/i
On 5/24/2010 4:32 PM, Jim Brown wrote:
> On Mon, 24 May 2010 13:05:03 -0400, Paul Christensen wrote:
>> Another disturbing attribute of the '7800 and '7700 is that harmonics from
>> its internal SMPS can be heard when the receiver is tuned from ~ 80 kHz
>> through 160m with decreasing amplitude as
On Mon, 24 May 2010 13:05:03 -0400, Paul Christensen wrote:
>Jim, that's probably the strongest coupling mechanism most of the time
>although some receivers have poor shielding from the immediate environment
>and noise coupling can occur from the SMPS to the receiver's front end.
>An example of
Greetings,
Thanks to all who responded.. I found a ham here in Austin that will be
giving me a demo
of his K3 tomorrow afternoon.
73,
Tony L. (KJ5XF)
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Jacques, it's in the notes for firmware 3.84 :-
"* SQUELCH-CONTROLLED 1750-HZ PL TONE: Some EU
repeaters require a 1750-Hz PL tone burst to open. Previously, an
0.5-second burst was generated at the start of each transmission.
Now, this tone is only generated if squelch is not already open.
I have one for sale. I was going to go the softrock way, but now will wait
for the P3.
Used it only a couple of times. $80 OBO shipped US. Everywhere else actual
cost.
Mike
AI4NS
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GW0ETF wrote:
> Anyone have any idea which bit of the complete upgrade makes such a
> significant difference..? I'm toying with the idea of the low pass filter
> part of the upgrade (K3DSPLPF) as I have no particular interest in enhanced
> low frequency response.
this is all I have done with my K3
I also found pins 29 and 30 (dot/dash) on U6 on the Control Board to have
higher than spec resistance, 96.7k and 96.5k respectively. They should be
70-90k.
Weird.
Steve, KC8QVO
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View this message in context:
http://elecraft.365791.n2.nabble.com/K2-RF-Board-resistance-checks-not-in-spec-tp
Hello
Perhaps I'll look stupid (once more !), but I can't find how to switch a 2 m
repeater on with the 1750 hz tone.
I have the minus 600 khz OK, the 1750 hz tone ( which is the standard in
France) is set normally, but I couldn't find, in the owner's manual or
manually, the right way to open th
> I looks that the IF stage (freq) is changing while setting the
> filters. Is this normal?
Yes. You will also see a significant change when selecting AM
or the "other" sideband. This is normal with most radios unless
they use separate filters for USB and LSB.
73,
... Joe, W4TV
On 5/2
Hi
I have a strange event and I like to get some feedback.
First I have in The K3 4 filters 2,7, 2,1 400 and 200 hz.and I'am using
550hz pitch
Will using spectrogram I don't see the RX tone while moving the filter
setting from small to wide en reverse.
So I guest I have done the offset setting c
Anyone have any idea which bit of the complete upgrade makes such a
significant difference..? I'm toying with the idea of the low pass filter
part of the upgrade (K3DSPLPF) as I have no particular interest in enhanced
low frequency response.
Or..has anyone fitted just the K3DSPLPF to an early
After viewing the P3 at Dayton, and pondering adding one, one item came to
mind which would make it more appealing to me. This would be a means to
switch the P3 between two K3s from the P3 itself, and/or via computer.
Yes, I know something could be jury rigged up to make that happen, but
desktop
> It is important to understand that sitting on top of the transceivers is
> NOT the primary interference coupling mechanism for RFI. Rather, noise is
> coupled out of the noise source external wiring (that is, the AC power
> cord
> and the DC power wiring), which then radiates it INTO YOUR RX A
On Mon, 24 May 2010 07:57:25 -0400, Bill Coleman wrote:
>> Both power supplies are dead quiet, the fans seldom come on. They both sit
>> on top of the transceivers and never cause sperious
>> interference.
>The SEC 1223 does generate some RF noise. This is most noticeable on 160m.
It is importa
On Sun, 23 May 2010 15:04:30 -0400, Paul Christensen wrote:
>In fact, all leads are done with IDC ribbon cable and
>grouped/wrapped together on one core.
Thats good. Whats even better is to use twisted pair for the entire
length of any current loop carrying pulsed current.
73,
Jim K9YC
_
If you are interested in adding LEDs to the K2 you may want to look at my
description on how to add up to 5 LEDs without drilling any holes in the K2,
see http://www.qslnet.de/member/la3za/K2_LEDS.html K2 LEDS . They are:
1. Split/RIT/XIT
2. Zero-beat detector
3. Analog audio filter
4. TX on
5.
The SSB module won't buy you anything for CW, unless you plan to use J2A
where modulation is required (i.e. the method for CW used in cocoaModem,
etc.). The RX and filters in the base CW rig are already ideal for normal CW
and it has a built-in keyer as well.
I elected not to put the SSB module
Alexey,
That is a very old mod (2003) and was one of the experimental things
done at that time.
Since then, the T7 winding ratio has been changed and the specs on the
IF filter crystals have been modified.
Currently I do not believe there is any benefit in applying that mod to
a K2. If you hav
You can find the SPLIT/RIT/XIT LED mod on Tom Hammond's website.
Apparently the link on the Elecraft website has disappeared.
Go to http://www.n0ss.net/index_k2.htm.
73,
Don W3FPR
Alexey Kats wrote:
> Hi there,
>
> I have a small question. The K2 manual refers couple times to the
> "Adding a S
AB7CE's mod? Interesting... Are you referring to the one where T7 needs
to be rewound?
Val wrote:
> Alexey,
>
> You don't need SSB option, if you are going to operate CW only. This is
> the beauty of K2 - you pay only for what you really need.
> Furthermore, If you are goung to use K2 only fo
On May 23, 2010, at 6:12 PM, abell wrote:
> I use the Samlex SEC 1223 power supply for my K3/100 and the Samlex SEC 1235
> to power my Ten Tec OMNI Vll transceivers.
I use a SEC 1223 with my K2/100 and TS430S.
> Both power supplies are dead quiet, the fans seldom come on. They both sit
> on top
Hi there,
I have a small question. The K2 manual refers couple times to the
"Adding a SPLIT/RIT/XIT LED to the K2" application note, but I cannot
find it anywhere. Could anybody point me to where it is located? Sorry
for the silly question and thank you .
(I do not have K2 kit, so I have no id
Gary Hvizdak escribió:
> Hi Ramiro,
>
>
>
> Below I’ve pasted portions of the K3 Owner’s manual (theory of
> operation section) and portions of the K3 Service manual (i.e. the
> schematics).
>
Thanks Gary for the information. I understand it better now. I would
like to know if the exac
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