I am interested in determining which earphone (or speaker) would have the
highest physical movement. I am deaf and intend to read morse by feeling the
vibration. Once I have found the earphone/speaker, I then have another
problem. I suspect I will have to find the K2's best audio that
Kevin,
I've built 2 low loop antennas that are currently in operation. My wife
uses one for 80 and 40m regional communications, essentially the whole state
of texas plus surrounding states. It is composed of insulated wire with a
current balun fed by rg58 and is up about 15 feet and is diamond
On Dec 19, 2005, at 2:41 PM, Indy wrote:
Each year more and more have participated in SKN (Silent Key Night)
with these keys.
SKN is STRAIGHT KEY NIGHT!
Using a bug during SKN would be, er, sacrilege (or something)
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote:
Arrrgh! XG1 does not like even a V at 100W!
Instantly smoked R4 and R5. Before I break out my
soldering iron, has anyone else been through this
before? What else is likely smoked?
73 Merry Christmas!
Bill W4ZV
I wrote:
Arrrgh! XG1 does not like even a V at 100W!
Instantly smoked R4 and R5.
Amazingly it still seems to work fine but
puts out about 7 dB more on the 50uv posision.
Guess R4 and R5 are all I need to repair. Thank
you Elecraft for an (almost) idiot-proof design!
John, you bring up a very interesting issue here, and there are a world
of possibilities.
Speakers in general are transducers that convert electrical energy to
motion; the motion of the speaker coil moves the cone it is attached to,
which moves the air, which is what we hear or feel. So, more
[EMAIL PROTECTED] wrote:
I partially understand how a speaker works
and in order to decrease its audio output I will have to remove or partially
remove the paper which joins the core to the outer body - but will it still
vibrate ?
It would be worth a try to take a small speaker and cut
Bob
I too have hearing problems. I find the audio produced by the stock K2
lacking. I built up an external speaker and amplifier using an Elecraft
EC2 enclosure,
what a difference!
I used one of Tom N0SS's TDA2003V 5W AF Amplifiers. Two of the Elecraft
speakers part # 5 wired in parallel
In a message dated 22/12/05 11:42:04 GMT Standard Time,
[EMAIL PROTECTED] writes:
I partially understand how a speaker works
and in order to decrease its audio output I will have to remove or
partially
remove the paper which joins the core to the outer body - but will it still
Thanks for all the responses, direct and to the list. I had much more
luck yesterday by doing two things: unscrambling my zipcord feedline,
and listining in the afternoon, when propogation was better. My KX1
reacted well on all three bands; I heard the pileup around the Cuban
station around 7010,
K2 for sale. SN 796. It is a 10 outa 10 . Non-smoker environment. Is
equipped as follows:
KSB2 SSB
MH2 microphone
KAT2 atu
K1660RX 160/dual recv ant
KNB2 noise blanker
KAF2 audio filter/clock
KIO2 remote and cable
KBT2 internal battery
A to B rev mod
temp controll PLL upgrade
2.03d Firmware
Lee,
Look at the American QRP Club, Inc. site for DDS Projects.
Try www.amqrp.org
73, Bob VE3XM
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-Original Message-
I am interested in determining which earphone (or speaker)
would have the highest physical movement. I am deaf and
intend to read morse by feeling the vibration.
It occurred to me that the vibrator which is found in most cellular phones
these days may be
Well...let's see if I can go three for three here before the year runs out.
Are there any K1 owners who are experiencing the following behavior of their
K1's?
If I use low impedance headphones I do not notice anything unusual.
If I use high impedance headphones and I turn down the AF gain all
John:
Do not cut the speaker cone. It serves two positioning purposes.
First it holds the voice coil in place so that it does not rub
against the magnet or driving coil (depending on the speaker type).
Second it provides the spring that allows the coil to return to the
center of its
Thank you one and all for your prompt and helpful replies.
To sum them up -
1. It will be bad news if I remove the paper from a loudspeaker - it will
stop working.
2. A visual method of reading morse would be helpful but I would rather use
vibration, but visual and vibration would probable
Hi
I found that BFO frequency is 50-100Hz higher at power on.
It takes about 1-1.5 hours to be fixed at correct frequency.
My K2 is #4504 so I believe it has been modified as Elecradt
made K2 BFO drift mod in 2002.
My question is that 50-100Hz drift is within specification ?
73 de aki, ja1nlx
Sverre Holm wrote:
It occurred to me that the vibrator which is found in most cellular phones
these days may be just as suitable for feeling the vibrations.
Doubt it. They're basically an electric motor with an offset weight.
I'll admit I've never tried feeding them with AF AC, but I wouldn't
Winter has set in here in the Northeast (PA) and we
have had snow on the ground since Thanksgiving.
This is bad for the aninals and birds who need food
and can't get it through the snow cover.
A more serious problem, however is the need for indoor
activity for kit builders.
My kit resources are
~~
N2CQ QRP CONTEST CALENDAR
Dec 22, 2005 - Jan 23, 2006
~~
40 METER FOXHUNT - Each Friday 0200z to 0329z
(Thurs 9 PM to 10:29 PM EST)
80 METER FOXHUNT - Each Wednesday
On Thu, 22 Dec 2005, Bill Coleman wrote:
On Dec 19, 2005, at 2:41 PM, Indy wrote:
Each year more and more have participated in SKN (Silent Key Night) with
these keys.
SKN is STRAIGHT KEY NIGHT!
Using a bug during SKN would be, er, sacrilege (or something)
But the organization that
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