My friend down in Georgia sent me a photo of his PRC-2000, That is a fairly
current mil spec
1-30mhz synthesised man pack. IT HAS A SPECIAL 9 FOOT WHIP, WITH AN
AUTOMATIC ANTENNA TUNER. THEY WARN IN THE MANUAL NO DIPOLES, AND DO DONT
GROUND?
Hmmm what gives with that?
Hope to have my K2
In a message dated 22/03/05 07:38:18 GMT Standard Time,
[EMAIL PROTECTED] writes:
Any modulation of the K2 PLL will now appear as sidebands to the main
signal.
They will be spaced at either 50Hz (Europe) or 60Hz. If the problem is
intense
there may be harmonics.
In a message dated 22/03/05 03:04:24 GMT Standard Time, [EMAIL PROTECTED]
writes:
There was also a circuit in one of the worst radio's I have ever owned. The
yeasu Ft707 used
dual 8 pole filters in the 2nd IF. In between the 2 filters was a VCO.
This
gave an excellent IF
width
anyone advise
i have a problem on controll board
no control over trans mit out put
with power control set to almost minimum i get full output
15 watt
i thout it was proberbly a alc fault
changed u 10-u8 and q8 high out put dosent allow me to take
votage readings on transmit
i have used
--
Message: 42
Date: Mon, 21 Mar 2005 21:30:35 EST
From: [EMAIL PROTECTED]
I
Is anyone else here a turtle today?
You bet your sweet a** there is!
I'm (actually, getting back to the thread) a
quasi-turtle. I'll stuff three or four components in a
group, then
Folks,
I would add to what Ron said that the AGC Threshold setting also has a great
influence on the S-meter.
It is possible to 'twiddle' with the AGC Threshold pot, CAL S Lo and CAL S
Hi settings to obtain most any S-meter reading you want.
CAL S Hi alone can be adjusted to produce the S-9 at
I must put myself in the hare category (read Bugs
Bunny).
I appreciate the turtle method, and use it when I have
doubts about the component or location. Always have
the DVM on hand as some of the resistor colors are too
close in shade to each other. I like to solder in
waves, it just feels good.
Probably not a problem. However, if you plan to do surrent measurements,
the outer ring of the shrouded banana plug may actually engage a shunt
switch or other device so that all the current doesn't go thru the meter.
It was this way on my Beckman meters.
NRE/COLE Test Center OH-3
Tom,
I will attempt to help - you know that the problem is on the Control Board
(and its connectors), so proceed this way.
First (with the Control Board plugged in), be certain there is continuity
between Control Board Q8 emitter and RF Board R98 (on the bottom of the
board).
Also check the
Wow, Robert, *that* is fantastic! I'm looking forward to your QST
article - I can't imagine them not printing it there or in QEX. You
justly deserve your Mad Scientist title. :-)
Thanks,
Mike AB3AP
Avondale, PA
Robert wrote on 03/21/05 16:19 ET:
Mike and all I built this unit to solder
Hi,
I finished my KPA100 last night. Everything checks out ok except for low
power output from the bands that use two of the filters. 17/20 and
18/12/15. I get full power on 80 and 40 (160 untested). Less than 1W on
the affected bands - this is as indicated on the K2 LCD and also on the
test
I do not like to see a fillet on a solder joint on a PCB...When that happens, I
always grab the Hakko 808, clean the joint off, and resolder it...Remembering
that I am dealing with plate-through holes, if I get a fillet on the
soldering side of the board, then there is a good chance that I
In the Your mileage may vary category.
I have found 2 advantages, for me, with the group method:
1. Working in groups I have found that the position I want to fill already
occupied by another component of the same group.
2. I can solder leads in a spaced pattern so that I do not heat the
Hello Dan,
I will arrive at Turkey Point Light around 10:30am on Thursday. I will
then meet a woman there who will give me a tour of the light. I will
take pictures outside and inside of the light. I plan to take pictures
of the light assembly on top from the inside. This should be a unique
Thanks for the replies so far.
Further to my message below.
I had a quick look around at lunch time and the confusing thing is that
there is no apparent loss of Rx signal strength on the affected bands. I
used a cap on the end of a fly lead attached to my antenna and probed at
the antenna
How can an unsoldered connection even remotely be considered a problem
with a plated-through hole? There are no reports of problems with
plated-through holes in Elecraft boards. This is definitely not one,
either.
Please re-read W4BQPs comments again.
On Mar 22, 2005, at 8:36 AM,
G4BJM may have been talking to himself:
Probably the main factor is screening of the VCO/PLL. I'm not sure how
feasible that would be?
Geoffrey GM4SID suspects the sidetone modulates the VCO, and if so what
other internal signals can effect it? He also suggests D8 and D13 as
possible noise
G3RXQ mentioned:
The problem of a power transformer close to a K2 such as to cause problems on
SSB has oft been reported. What I have not seen so far, is, that because
it is
the PLL that is affected the problem can also be observed on receive.
Receive only, KSB in path/not in path - no
W6FB queried:
How can an unsoldered connection even remotely be considered a problem
with a plated-through hole? There are no reports of problems with
plated-through holes in Elecraft boards. This is definitely not one,
either.
Please re-read W4BQPs comments again.
About as much as magnetic
In reviewing the K2 manual prior to ordering/building
I have noticed that there are several
instructions to install a 'GROUP' of components then
solder and trim the leads. Wouldn't this lead to
missed solder connections or cause a less than
perfect soldered joint. I should think like 'THE
TURTLE '
Hi,
My first contest effort with K2 was a nice one :
1st place QRP/SSB in ZRS KVP 2004 (results are on
http://lea.hamradio.si/~kvp/fr/r2004/2004_qrp.htm )
It's not really a news :) but is official now, after the results were
published in CQ ZRS review.
I was running the K2 #3719 at 2W into
Hi,
My first contest effort with K2 was a nice one :
1st place QRP/SSB in ZRS KVP 2004 (results are on
http://lea.hamradio.si/~kvp/fr/r2004/2004_qrp.htm )
It's not really a fresh news :) but is official now, after the results
were published in CQ ZRS magazine.
I was running the K2 #3719 at 2W
You can use the message rules in Outlook to do anything You want.
(sometimes
also tricks You :( )
I think Eric or Wayne already closed this argument and the reflector
remains
unique.
So-Dont worry-Be happy :)
I am more concerned with the filter of messages.
I wanted to post the link on
Jap Geoff!
I played a bit with my K2 to see if screening of some parts could be done.
The signal path on the bottom of main (RF) PCB is on short paths so putting
the coax lines would not do the job i think (maybe only one trace to TUF
mixer wich is abt 6cm lomg).
The area under control board vher
Ah my English
Jap Geoff!
I played a bit with my K2 to see if screening of some parts could be done.
The signal path on the bottom of main (RF) PCB is on short paths so
putting
the coax lines would not do the job i think (maybe only one trace to TUF
mixer wich is abt 6cm lomg).
Anybody measured filter xtals.
Ls, Cp, Q, Cs, Rs, Fs and Fp
or some of these?
Benny OH9NB
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub
Benny,
Check out Jim's site here:
http://www.k8iqy.com/testequipment/pvxo/pvxopage.htm
Bob
WB6KWT
- Original Message -
From: Benny Aumala [EMAIL PROTECTED]
To: Elecraft@mailman.qth.net
Sent: Tuesday, March 22, 2005 12:05 PM
Subject: [Elecraft] xtal measures?
Anybody measured
On Mar 21, 2005, at 6:03 PM, S55M wrote:
While surfing arround on Elecraft list archives i read abt 14361
birdie.
The common statment is Thanks God is out of band
Not if You are using 144/14MHz transverter :(
Why use 14 MHz as an IF? Seems like 28 MHz is a better choice -- and
you get 2
There are 3 epubs that are multitopic. I always thought reflectors were for
the more tech/engineer type
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub
A simple brute force test would be to procure a simple mild steel box
sufficient to contain the K2 on all sides save the front panel. See if the
K2 in the box is still sensitive to nearby power fields. If not then
proceed to use less shielding in a series of tests:
Experiment with sheets of
Bob,
Putting a large speaker magnet near any tuned circuit creates a large
magnetic field that can affect the tuned circuit. The effect of your large
speaker is common upon many radios. This even affects toroid circuits such
as those in the K2.
-Stuart
K5KVH
Hello!
If You look at the characteristics of HF common radios You will see the huge
difference between the preformance on 28MHz and 14MHz for most commercial
equipment and -hence-there is no technical reason for that!.
TS870 and 756pro are pure examples :)
Table 4: IP3 values of different HF
Henning,
Unibit is the name for that gizmo. Klein tools owns the rights to it, and
here in the states it is usually available at places like Lowe's,
and electrical supply houses like Graybar also stock them. for purchases
in .dk land, you may have similiar sources available, or you may
Hi Henning:
I know this is Somewhat off topic but I hope you can help me anyway.
I saw something on TV yesterday. In a program Ocean county choppers
they were using a kind of stepped size drill bit. Can anyone help on info
on this tool as I have newer seen anything like that before. I must
Hi folks:
The quest to transform K2 S/N 3460 into something greater than the sum
of its parts has finally begun in earnest.
I am working on the Control Board right now.
I just want to confirm the assembly instructions:
R18 and R19 are basically resistors with value of 0 (zero) ohms.
So you
On Mar 22, 2005, at 4:22 PM, S55M wrote:
If You look at the characteristics of HF common radios You will see
the huge
difference between the preformance on 28MHz and 14MHz for most
commercial
equipment and -hence-there is no technical reason for that!.
Isn't the dynamic range of the system
I think they are great! And I am quite fumble-fingered with machine
tools.
See http://tinyurl.com/4erfb for pictures of how
I used a Unibit to make a hole for a BNC connector in a project box.
I also used it to enlarge the un-needed transverter hole for a DC
coaxial power connector for a
Jon, VE8JJ, wrote:
I just want to confirm the assembly instructions:
R18 and R19 are basically resistors with value of 0 (zero) ohms. So you
solder in a piece of wire for each of them. Then if and when you are ready
to install KAF2, you desolder and remove the two wires at R18 and R19.
With my
OK Bill!
You and others can read everything in this UFB article written and
designed
by good friend of mine Robert-S53WW.
http://lea.hamradio.si/~s53ww/xvrt/xvrt.htm
Enjoy reading!
Adi
- Original Message -
From: Bill Coleman [EMAIL PROTECTED]
To: S55M [EMAIL PROTECTED]
Jon:
If you are sure you intend to buy the audio filter, you can buy the kit
now and install the proper connectors right away. You can then use a
couple of scrap resistor leads as jumpers to make the required
connections - the same as if you had the audio filter installed and
wanted to
The 30m Mod arrived in Mondays mail. I wasn't able to get to it until
today.
From start to finish it took about 2 hours to populate and install. The
documentation really made it seem more difficult then it turned out to be.
What a gas.Now while I had the case open I compressed the coils of L2
as
I'm most likely mistaken but I seem to recall a listing
for a Mini log Sheet for the KX1. how about
pointing me in the correct direction
de rc kc5wa
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the
Hi RC,
You'll find it at:
http://www.elecraft.com/KX1/KX1.htm
I'm not sure how many people have tried this method. I used it a lot
during field testing of the KX1 and it's great for casual logging.
73,
Wayne
N6KR
On Mar 22, 2005, at 8:04 PM, Robert Conley wrote:
I'm most likely
Julius, your Grandpa Aesop would not be pleased about Bugs! OK, OK,
Turtles are up-market Tortoises.
73, Geoff
GM4ESD (Turtle)
- Original Message -
From: J F [EMAIL PROTECTED]
To: Elecraft@mailman.qth.net
Sent: Tuesday, March 22, 2005 1:44 PM
Subject: [Elecraft] Tortoise the Hare
44 matches
Mail list logo
