No replies to this one yet, but I have spent a bit of time looking over
the schematic and poking around with my DMM scope. Here's what I've
found so far:
TX (RD4 on the control board MCU) is normally low, 8T is 0 volts. When
transmitting, TX goes high, Q3 turns on Q1 and 8T becomes 8 volts.
RX
Yes, Gordon is producing keys again. They are very nice for sure. I had a VHS
for 15 years, but recently sold it. I bought a hand made key by Alberto
Frattini, I1QOD, for about the same price and like it better. Alberto, I
understand is the European High Speed champ and a retired machinest.
Humm - when I have the ATU in the tun position (yes, it's lowercase on
mine) I hear the relay click each time I go from band to band including the
jump from 30 to 20 - BUT - when I have the ATU in the CAL position, it
does not click when going from 30 to 20 as described but does click on
the
Thanks for the response. If it is an LDE, it is awfully consistent. I can
hear it all the time now on 80m, at least for the past three days.
Jerry , KG6KGP
-Original Message-
From: Guy Olinger, K2AV [mailto:[EMAIL PROTECTED]
Sent: Tuesday, June 15, 2004 3:10 PM
To: [EMAIL PROTECTED];
Jerry Hancock wrote:
Thanks for the response. If it is an LDE, it is awfully consistent. I can
hear it all the time now on 80m, at least for the past three days.
If you hear it during the day, it most assuredly isn't any kind of
ionospheric reflection or echo, since the D-layer absorbtion
Fellow builders,
Having built several projects recently (K2, Emtech ZM-2
and Inrad #352 roofing filter kit for my Orion), I recently bought a
Headband Magnifier on eBay in preparation for building KD1JV's
AT Sprint II which makes extensive use of surface mount parts.
I
I just fired off a bunch of tripple-gallon (15 W) dits on 3505. No echos
heard from Northwest Georgia.
Anyone else hear it? Let's see if it's localized. I'm at N 34 54 22 W 85 26
21.
Dan / WG4S / K2 #2456
snip
I can hear it all the time now on 80m, at least for the past three days.
/snip
On Jun 14, 2004, at 6:50 PM, David Toepfer wrote:
This procedure got an initial nod from Wayne so I am posting it to the
list for
broader peer review as it were...
Thanks, David. To anyone attempting this procedure:
- Calibrating the S-meter is a bit tedious by whatever method you use.
I
Wow! That is a low price!!
One of the things I like best about the Optivisor is that, like this device,
it is binocular. I didn't get the loupe with mine and have never missed it
(used an Optivisor for nearly 25 years so far).
What I do to adjust the magnification for really CLOSE work when
- Original Message -
From: Stuart Rohre [EMAIL PROTECTED]
To: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED];
elecraft@mailman.qth.net
Sent: Tuesday, May 25, 2004 10:54 PM
Subject: Re: [Elecraft] OT: Long loop antennas
Yes Rhombics are fun. Back in the Army MARS program days
Hello All , I have K1 1850 up and running and a K2 in the box to assemble
when time permits.
When assembling the K1 several IC's were soldered directly to the RF board.
When I build the K2 , Is there a reason for not using an IC socket soldered
to the various
boards rather than direct soldering an
Sorry, I am near San Francisco.
Jerry, KG6KGP
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Dan Barker
Sent: Tuesday, June 15, 2004 8:51 PM
To: Elecraft
Subject: FW: [Elecraft] 80m Reflector problem
And where is here?
Dan
snip
I am on 3785 sending
Hello to all
I build my K2 (S/n 4133).Work 100% on received mode,but on tx mode have the
nexy problemHi current.I check all,and i find that my K2 is on TX the
collector of Q2 on Control Board have 3' 52 volt.I removed this transistor
(2n3906) and i put another new,but the problem is the
Glenn Haffly wrote:
Is there a reason for not using an IC socket soldered to the
various boards rather than direct soldering an IC to the boards ?
Glenn,
IC sockets are generally appropriate only for ICs containing firmware which may
need upgrading. For almost all other situations, the use
Hi
This question comes up from time to time with new builders. You should not use
sockets except where Elecraft provides them. The use of sockets in RF circuits
will add capacitance and/or inductance and may cause the circuits performance
to degrade. None of the mods to date have required
Sigh...
On Jun 15, 2004, at 3:26 PM, Glenn Haffly wrote:
Hello All , I have K1 1850 up and running and a K2 in the box to
assemble
when time permits.
When assembling the K1 several IC's were soldered directly to the RF
board.
When I build the K2 , Is there a reason for not using an IC socket
There was a question a while back on the adjustment of a bug. Can't
remember exactly when but I did find the web page [?? Would you believe mine
??]
www.aa8vs.org/nren/page3.htm
There are two formats M$ Word and PDF format.
73 Chuck AA8VS
___
On Tuesday 15 June 2004 20:00, W5TB wrote:
Hi Bud -- that would be terrific! The QRP booth has an antenna for
the first time in HAMCOM history and I've arranged for use of teh
FISTS call KN0WCW. I can provide a 7.5ah gell cell and power cord for
the K2. How about a paddle? Do we need a tuner
And don't forget the most important reason -- You haven't lived until you've
removed the wrong 16 pin IC from the right spot on a PC board.
(The first IC I installed was in the wrong place, and that's why I posted
the same question as Glen)
Tom WB2QDG
K2 1103
KC0QZX mentioned:
I work on a ship that goes to Japan, China, Taiwan and Korea. I am presently
getting my tickets to run from these countries while I'm dockside. I hope to
see a lot of you on 20-40 meters in the future.
In Taiwan the mainland, I believe the best you can do will be a permit
My Sony MDR 7506's have a DC resistance of 72 ohms per side. Since the
phones are in parallel, the rig will see about 36 ohms. I am not sure how
that relates to impedance but it seems in the ballpark. Heating and
reactance would increase it some but I don't know by how much. They are
Jack,
Yes, the beam could be shortened with helical wound elements of wire. This
was a beam shown in the ARRL Handbook way back, not sure if 1957 or when.
You could even make the elements of ham sticks!
You can fed one side with a monopole approach to get impedance matching, see
the Kent
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