Jim,
Yes, switching between digital and SSB modes on the KX3 is troublesome
from the requirements imposed by the single Mic input jack and the
single headphone (SPKR) jack.
For convience in switching between Data modes and speech modes, you will
have to go with the K3 which has independent p
Jim,
It is important to realize that the K3 bandwith is equal to the audio
bandwidth. The K3 reports the audio bandwidth.
A K3 with a 6 kHz filter is limited to a maximum of 3 kHz audio because
an AM signal is double sideband and the IF bandwidth for the AM signal
must be twice the audio freq
This of course is a discussion that isn't likely to die before we do,
but I really don't think that any significant portion of today's youth
will ever look at amateur radio like we do. I wish that weren't the
case, but reality bites.
1. The major lure of amateur radio for most of us was th
Hams of a certain age, including yours truly (first licensed in 1971) recall
their excitement on joining the hobby: there was the promise of contact with
faraway places, collection of vivid QSL cards, mastery of esoteric equipment,
synchrony with the rhythms of Morse code, and the crafting of an
Spoken like a true tech! :)
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources
On 12/13/19 12:21 PM, hawley, charles j jr wrote:
Generally...whatever you stock in replacement parts will never
Trying to get an old, no-longer-monitored email unsubscribed, and the
correct one subscribed. Testing my efforts.
Thanks and 73,
Ian, NV4C
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Good advice
Bob, K4TAX
Sent from my iPhone
> On Dec 13, 2019, at 2:35 PM, hawley, charles j jr
> wrote:
>
> Generally...whatever you stock in replacement parts will never be needed.
> These devices know what’s on the shelf. The part that device breaks will be
> the least expected part.
>
OK, I think I read something into Joe's post that wasn't really there,
that's how I thought it worked and I I think Joe was referring to the
DSB BW at the 15 kHz 2nd IF. Enjoy the GC, we stayed in a cabin maybe
50 meters from the edge ... awesome!
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Wash
Joe, I think the confusion might come in with the typo -> A 5 KHz *audio*
bandwidth would be equivalent to a 10 Hz RF (IF)
Should be -> A 5 KHz *audio* bandwidth would be equivalent to a 10 KHz RF (IF)
73,
Bill WE5P
>
> On Dec 13, 2019 at 15:31, Joe Subich,
> On Dec 13, 2019, at 12:30 PM, Joe Subich, W4TV wrote:
>
> A 5 KHz *audio* bandwidth would be equivalent to a 10 Hz RF (IF)
> bandwidth.
I expect you mean a 10 kHz RF bandwidth, not 10 Hz.
wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)
___
Fred,
The audio CODECs in the K3 have a 12 kHz sample rate. This puts the maximum
audio bandwidth at 6 kHz. Practical limits of DSP filtering in the context of
the K3 implementation limit audio to 4.5 kHz or so.
Aliasing around the 12 kHz sample rate of the CODECs required that “brick wall”
On 2019-12-13 1:22 PM, Fred Jensen wrote:
> Could you explain a little more?
What's to explain? AM is a double sideband signal - equal width
either side of the carrier with each sideband carrying the same
audio information but inverted in frequency.
A 5 KHz *audio* bandwidth would be equivalent
Generally...whatever you stock in replacement parts will never be needed. These
devices know what’s on the shelf. The part that device breaks will be the least
expected part.
Chuck Jack Hawley
KE9UW
Sent from my iPhone, cjack
> On Dec 13, 2019, at 12:09 PM, "g...@gmx.net" wrote:
>
> Very t
Could you explain a little more?
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
On 12/13/2019 6:19 AM, Joe Subich, W4TV wrote:
Remember, the DSP display is audio. 5 KHz represents 10 Hz at
RF (IF).
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Very true. I just tried to get every important missing option and the
upgrades.
I'm asking myself it it makes sense to replace the front panel, as it
seems to be impossible to repair or clean the soft knobs. Or am I
missing something?
Am 13.12.2019 um 18:28 schrieb Bob McGraw K4TAX:
Having be
Jim and all,
My K144XV is now alive. So thanks for your great help, also thanks to
elecraft support who helped with a drawing. The old side plate also
missed the blank space, which I spotted on the scans of Jim.
Lucky me, the transverter was also equipped with the REFLOCK board, so I
guess that
Having been down this path with another company and having to plan for
end-of-life support for products of that company, I would caution that hoarding
parts, sucks up and will rapidly deplete any inventory planned. Although I
understand the desire to keep your radio operational, without parts a
Scott has a great point. With radio models changing & out-dating as they do,
please recommend, if you can, what K3 (and particularly what K3s)parts would
be good to have for either the future or the future owner.
Only Elecraft would know what parts are either failing or dwindling in supply
and th
I have one as well that I think I can part with.
Mike va3mw
On Fri, Dec 13, 2019 at 9:48 AM Ian Kahn wrote:
> Terry,
>
> I have one for sale. Let's connect off-line.
>
> Ian, NV4C
>
> On Fri, Dec 13, 2019, 9:39 AM Terry Basom wrote:
>
> > Looking for a T1 tuner..
> >
> > Thanks
> > Terry
> >
Terry,
I have one for sale. Let's connect off-line.
Ian, NV4C
On Fri, Dec 13, 2019, 9:39 AM Terry Basom wrote:
> Looking for a T1 tuner..
>
> Thanks
> Terry
> VE3IQL
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Looking for a T1 tuner..
Thanks
Terry
VE3IQL
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On 2019-12-13 8:58 AM, Jim Stoneback via Elecraft wrote:
Is there any way to expand the (receive) DSP maximum bandwidth beyond 5kHz in AM mode?
No. It would be ineffective since the audio chain has a
4500 Hz "brickwall" (sharp cutoff) lowpass filter limiting
the audio response (to remove DA
Is there any way to expand the (receive) DSP maximum bandwidth beyond 5kHz in
AM mode? I have the 13 kHz roofing filter installed.
73,
Jim K4AXF
K3 #4936
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H
I recently upgraded of my two K3's. As such, I have a few left over parts
for sale.
Perhaps some of you own a K3; maybe you're interested in having some spares
on hand.
4x - KSYN3 synthesizer module
1x - KXV3A Transverter Interface
1x - KIO3A (3 board set) I/O interface
If interest
Never had a problem with Your Products I am using! ( K1, K3 and spares )
experienced quick response when asking for spares. Hints came quickly.
Even firmware issues were solved quickly - THANK YOU and have nice
holidays
Gerd OE3GSA 73
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