Greg AB7R wrote:
Other than that
there's no difference between AFSK and DataA.
Actually that turns out not to be the case if you care about the frequency
you are tuned to, e.g. for spotting purposes. Data A is Upper sideband and
the dial displays the suppressed carrier frequency (as it does in
Also check your VOX level in the menu. It needs to be turned up very
high when using it for digital modes. You are correct to use DataA for
PSK and other audio based digital modes. AFSK can be used for RTTY and
gives you the advantage of using the dual peak filters. Other than that
Hello,
I have noticed since last firmware 3.97 upgrade, when AFSK is selected (also
if is from a memory)it starts at 75 bps by default, not a hard job but you
have to change it to 45 bps (normal use here) every time you use RTTY, it
will be more convenient to default to 45 bps or choose which one
What is the noise figure of the K3 on six meters?
On SSB bandwidth I barely hear a noise increase when I switch from a dummy
load to my antenna.
73 Tom
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How does one go about using the key pad to key-in a frequency to the Sub
Receiver?
I see nothing in the K3 Manual on this.
Norm
AAV5VW / KB8EEF
$12/Month Auto Insurance
Drivers in your area are paying as low as $12/m. Free Quote
I have noticed since last firmware 3.97 upgrade, when AFSK is selected (also
if is from a memory)it starts at 75 bps by default
I find in AFSK as well as FSK that it is at the last used rate, 45.45 or
75 bps. This is using MCU 4.03/DSP 2.60 (the latest Beta), and
selecting mode from the
Well I finished 6959 a week ago and had been busy building a SWR/power meter
to see actual output going into the antenna. Sitting at my bench during a
null in kit building activity, I figured the time had come to test this
puppy out. I was listening on 20m so I tuned a little off of the
Upon loading the complete firmware upgrade, the AFSK was defaulted to 75 bps
and required changing on a per band basis and without rhyme or reason, the
reprogramming of some of the previously stored memories (with stored data mode
in them).
As an experiment reinstalling the firmware one piece
Norm,
There may be better ways but what I do is use the A/B button, set the frequency
and then A/B back.
Rick
K6LE
On 6/22/2010, at 4:25 , Norman L Zinn wrote:
How does one go about using the key pad to key-in a frequency to the Sub
Receiver?
I see nothing in the K3 Manual on this.
Norm
Great Story John
And congratts on your new build.
Here's hoping you have many more such memorable
contacts with 6959.
Regards
Nidge (G0NIG)
IO93dv
- Original Message -
From: NQ3RP j...@mcclun.com
To: elecraft@mailman.qth.net
Sent: Tuesday, June 22, 2010 2:40 PM
Subject: [Elecraft]
Can someone please confirm that TX EQ and Compression are applied to the Line
in audio while in SSB mode? I would check this personally but am away until
the day before Field Day. I am preparing some voice keyer files to send
from the logger to the K3 and want to be sure I don't need to EQ and
Can someone please confirm that TX EQ and Compression are applied to the Line
in audio while in SSB mode?
The DSP treats all Tx audio sources the same: FP Mic, RP Mic, Line In
and DVR. Tx EQ and/or CMP will be applied if active in the current mode.
73,
Lyle KK7P
W8JI wrote:
What is the noise figure of the K3 on six meters?
The noise figure of the preamp itself is typically 0.5 dB.
http://www.elecraft.com/manual/PR6_Owners_Manual_Rev_A.pdf
--
View this message in context:
I have noticed since last firmware 3.97 upgrade, when AFSK is selected
(also
if is from a memory) it starts at 75 bps by default
I find in AFSK as well as FSK that it is at the last used rate, 45.45 or
75 bps. This is using MCU 4.03/DSP 2.60 (the latest Beta), and
selecting mode from the
Jens, you are right: K3 + ACOM 1000 = excellent combination.
However, I highly recommend to anyone using a tetrode amp with a swamped
(i.e. untuned) input inserting of a lowpass filter BETWEEN the TX and the
amp. See for instance:
www.kk5dr.com/swampednetworks.htm
(inspite of the title of the
On Mon, 21 Jun 2010 22:02:42 -0700, you wrote:
AFSK also sets the dial display to the currently selected MARK frequency
rather than DATA A's suppressed carrier frequency.
In general, if you are using a waterfall mode, use DATA A.
Please put mode dependent VOX on the 'wish list'.
--
OV1A
Bill,
AS usual you have made an important observation. You made me curious
about my 6m environment so:
I turned off both my external preamp (RX ANT) and my internal preamp
(PRE) and merely looked at s-meter reading (S=1). I removed the
antenna with no discernable change in audible noise and
What happens to 6M then?
73, Mike NF4L
Richard Squire - HB9ANM wrote:
Jens, you are right: K3 + ACOM 1000 = excellent combination.
However, I highly recommend to anyone using a tetrode amp with a swamped
(i.e. untuned) input inserting of a lowpass filter BETWEEN the TX and the
amp. See for
Mike, I am using a old Drake filter which works up to 52 MHz...
Unnecessary here since we are only allowed to use 100 W on 6 m anyway!
But if you can find one for that range, even - like mine - with reduced
ratings on 50 MHz, it will certainly fit your needs since you won't drive
your amp at more
Sorry, didn't mean sending this to the reflector - here's my answer:
MI am using a old Drake filter which works up to 52 MHz...
Unnecessary here since we are only allowed to use 100 W on 6 m anyway!
But if you can find one for that range, even - like mine - with reduced
ratings on 50 MHz,
The theory in that link is pretty far-fetched. The screen is an excellent
shield for RF between the anode and grid. If the screen wasn't a nearly
perfect RF shield, we would never be able to use the tetrode in a grid
driven amp.
It's silly to think the screen shield the control grid for months
K2 SN 6059 no SSB transmit
Folks, I’m trying to get a newly built SSB board working on my K2. K2 works on
CW per Don’s set up and testing last year. I’m working through the SSB
alignment on the SSB manual. Stopped on page 19 at “Fine Carrier Balance
Adjustment” where it asks that I verify K2
Bob,
I am not certain what your problem is. Tune will transmit a carrier at
the requested power level whether in SSB or CW. It is supposed to work
that way.
An alternate way to check for the correct carrier balance setting is to
leave the mic connector open (do not connect a microphone = no
Bob,
On second reading of your email - what happens when you select SSB mode,
press PTT and talk into the microphone? You should have RF output, but
only when talking.
If you have no output, check your microphone and the microphone
configuration header. If the microphone requires bias, do
I need to find an adapter to allow me to use a really low loss cable
that I have...
The cable has one male and one female RP-TNC connector and I need to get
PL259 (UHF) connectors. So I need male-RP-TNC-UHF and
female-RP-TNC-UHF adapters from a place that can 2nd day air ship...
I'm hoping to
I'm trying to find the specs on this chunk of coax that has the RP-TNC
connectors on it... I'm not having a lot of luck but perhaps someone is
more familar with it than I... Its just says Amphenol TWO 6001 9G
Then the box just says its a Cisco Systems Ultra Low Loss Coax
Assembly... And being
Ultra low loss is meaningless. What is the diameter?
I've been out of the industry for some time, but as I recall Amphenol didn't
make bulk cable, so they likely bought the cable from Belden, Times, etc and
built a cable assembly for Cisco.
I think your original premise is flawed. If you
I think I found a sheet that says its LMR600 or at least its in a
grouping that makes me think it might be LMR600.
OD on the stuff is .591 by my measurements.
From my calculation a 5:1 mismatch on 100 feet of LMR-400 would still
get me 75watts out the antenna at 30Mhz and things only get better
On 6/22/2010 8:55 PM, Brett Howard wrote:
From my calculation a 5:1 mismatch on 100 feet of LMR-400 would
still get me 75watts out the antenna at 30Mhz and things only get
better as I head down into 20 and 40 meters.
On that basis, see if you can get some 75 ohm hardline from
your local
In Cisco parlance, Low Loss and Ultra Low Loss refers to classes
of Aironet coax cable assemblies. On this data sheet:
http://tinyurl.com/yr8fck
we find these described in Table 8. If you indeed have part nbr
AIR-CAB100ULL-R (where the ULL means Ultra Low Loss) then the
attenuation is specified
I know I'm about to sound completely nuts to everyone but I'm just doing
all this stuff for FD... ;)
I'll probably end up using the 100' or 50' chunk of LMR400 that I have
laying around here depending on how far away the antenna has to be from
the tent... Being that I'm going to be running 40
Thats another really great data point! Knowing Cisco getting the word
ultra printed on the box cost a good chunk of extra change! ;)
Well heck if LMR400 is .7dB/100ft I'm not so sure that its worth mucking
with finding adapters for it as if I end up having to put 2 adapters on
each end to get it
So I have a K2 all put together. I thought it was receiving fine - I didn't
try transmitting as I shamefully don't have CW down yet. I got the ssb kit
and put it together and it didn't transmit. I stripped it out (jumpers back
in place at W2, W3 and C167 is back in) and tried testing cw
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