RE: [Elecraft] RF POT (K2)

2004-06-19 Thread Sverre Holm
-- Sverre Holm, LA3ZA www.qsl.net/la3za ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net http://mailman.qth.net/mailman/listinfo/elecraft You must subscribe to post. Subscriber Info (Addr. Change, Unsub etc): http://mailman.qth.net

RE: [Elecraft] EurAsian ECN

2004-06-19 Thread Sverre Holm
been too early for stations from Northern Europe, so PA0RBO and I made a ECN QRP QSO afterwards. It would be interesting to hear how much power YI9RVT used? Next week maybe ... -- 73, Sverre -- Sverre Holm, LA3ZA www.qsl.net/la3za

RE: [Elecraft] Eurasia ECN 26.06.04

2004-06-27 Thread Sverre Holm
In addition I responded to G4DMP's CQ ECN call on 40 m and was also contacted by DL1IAQ on 20 m. So this has turned out to be a North Sea Elecraft net. Sverre LA3ZA -Original Message- Worked on 20m: DL1IAQ/ 559/Mac/K2 # 2706/5 W LZ1VB/329/name ?/K2 # 2745/5 W. (deep QSB) Worked on

RE: [Elecraft] Eurasia ECN 26.06.04

2004-06-27 Thread Sverre Holm
Correction: both contacts were on 40 m. In addition I responded to G4DMP's CQ ECN call on 40 m and was also contacted by DL1IAQ on 20 m. So this has turned out to be a North Sea Elecraft net. Sverre LA3ZA -Original Message- Worked on 20m: DL1IAQ/ 559/Mac/K2 # 2706/5 W

RE: [Elecraft] Audio Thump

2004-06-28 Thread Sverre Holm
Do you have the KDSP2 in your K2? There is an issue with it that gives a pop as you change to rx. -- 73, Sverre -- Sverre Holm, LA3ZA www.qsl.net/la3za -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jimmy Lee Sent: 28. juni

RE: [Elecraft] RE: Eurasia ECN 26.06.04

2004-06-29 Thread Sverre Holm
. -- 73, Sverre -- Sverre Holm, LA3ZA www.qsl.net/la3za ___ 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 etc.): http://mailman.qth.net

RE: [Elecraft] K2: VFO clicks/pops in the presence of strong signals

2004-07-12 Thread Sverre Holm
. The pops you hear is when you are the end of the pulling range, and the divisor changes and the varicap voltage goes to the other end of the pulling range. -- 73, Sverre -- Sverre Holm, LA3ZA www.qsl.net/la3za ___ Elecraft mailing

[Elecraft] July updates to K2 mods list

2004-07-17 Thread Sverre Holm
mode issue with antenna tuners and K60XV - Computer interface for PSK31 completely inside K2 and with contributions from Elecraft, G3RXQ, W3FPR, PC2A, KD5NDB, WA8SRA, EA3BLQ, and LA3ZA -- 73, Sverre -- Sverre Holm, LA3ZA www.qsl.net/la3za

RE: [Elecraft] Using the 10th LED of the S-meter for CW Tuning Indicator

2004-09-10 Thread Sverre Holm
I'd appreciate hearing from those of you who HAVE installed one of these devices, and more specifically those of you who have implemented use of the right-most (10th) LED of the K2's 10-segment LED S-meter as the tuning indicator LED. Tom, I have used the right-most LED for some years and I

RE: [Elecraft] QUESTION to the Group re. where to install the CW Tuning Indicator

2004-09-21 Thread Sverre Holm
With SMD you should be able to fit it where I put my Manhattan-style zero-beat indicator + audio amplifier: on the back of the front panel board above the mic connector. The advantage is that all connections go to the front panel board so there will be no loose wires. See

[Elecraft] K2 Mods list: September updates

2004-09-23 Thread Sverre Holm
sorted into a KI6WX and a G3RXQ section. and with contributions from Elecraft, W4WFB, and G3RXQ -- 73, Sverre -- Sverre Holm, LA3ZA www.qsl.net/la3za ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber

[Elecraft] Mirror of LA3ZA Unofficial Guide to Elecraft K2 Modifications

2004-11-04 Thread Sverre Holm
The LA3ZA Unofficial Guide to Elecraft K2 Modifications on http://www.qsl.net/la3za/K2/mod.html is now mirrored on http://www.qslnet.de/la3za/K2/mod.html Thanks to DL5SFC for providing the web-space, and to the German ham whom I unfortunately have forgotten the name of, who first suggested

RE: [Elecraft] K2 Noise Blanker Modifications

2004-11-16 Thread Sverre Holm
Did you get a reply to your question? In case you did not, there were some noise blanker mods for pulse widths a long time ago. They can also be found on the K2 Mods list, see http://www.qslnet.de/la3za/K2/mod.html under General mods and KNB2. 73 Sverre LA3ZA http://www.qsl.net/la3za/

RE: [Elecraft] K2 Noise Blanker Modifications

2004-11-17 Thread Sverre Holm
It works now, so I think it is just the usual qsl.net problems. This is why I have mirrored my mods list on qslnet.de . Try http://www.qslnet.de/la3za/K2/mod.html http://www.qslnet.de/la3za/K2/mod.html under General mods and KNB2. 73 Sverre LA3ZA http://www.qsl.net/la3za/ _

RE: [Elecraft] Control board mod with KAT2 and KAT100

2004-12-28 Thread Sverre Holm
-Original Message- just read the manual for the KAT100. It states to remove C44 on K2 control board before using KAT100. OK. How does this affect the use of the K2 without the KAT100, with KAT2? -- C44 is explained in the following alert from Elecraft:

RE: [Elecraft] Birdy on 28020 with K2?

2005-01-01 Thread Sverre Holm
-Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tom Arntzen I have a birdie at 28019,27 cw and cwr falling slightly during warmup. Since I know that you have a K2/100 and none of the others that answered you I can confirm that the birdie is from

RE: [Elecraft] 10m Birdie

2005-01-02 Thread Sverre Holm
-Original Message From: [EMAIL PROTECTED] --- I've wanted to eliminate this for some time since there a lot of cw activity between 28025 and 28025. My KPA100 is installed on the K2. The birdie produces about 1 s unit bar with the pre-amp on. Based on Sverre comments, how do I

RE: [Elecraft] KPA100 - 80m poor quality SSB

2005-01-13 Thread Sverre Holm
-Original Message- There is an Errata from Elecraft which does not appeared to have made it onto their Web site yet. It is:- --- K2/100 MANUAL (Appendix G) ERRATA Rev. C-3, December 14, 2004

RE: [Elecraft] Birdie at10m: a choice between a turkey and an ostrich !

2005-01-16 Thread Sverre Holm
-Original Message- In my case, I want to think of the birdie living in my K2/100 as a substantially bigger one, a turkey (with the K2100 enabled -power 11w) at 28.266 (USB). -- This birdie is an image of the 18432 KPA100 oscillator since 18432 + 2*4915 = 28262.

RE: [Elecraft] Birdie at10m: a choice between a turkey and an ostrich!

2005-01-16 Thread Sverre Holm
-Original Message- Agree with what you say, but I get a strong birdie at 28.276 without the KPA100 on. This one I think is LO + BFO , that is 23.361 + 4.915 = 28.276, nominal freqs. Being first order it is also strong. Other products + mLO +/- nBFO also converge here, but are not a

RE: [Elecraft] Birdie at10m: a choice between a turkey and an ostrich !

2005-01-17 Thread Sverre Holm
-Original Message- From: [EMAIL PROTECTED] On Behalf Of G3VVT The reported birdie at 28.276MHz is there, but extremely faint at about 28.275.6MHz on USB and shifts up to about 28.277.7MHz on LSB. I would think it fair to comment that most ham receivers have birdies somewhere if you

[Elecraft] Remoting the KPA100 without a KI02 in the K2

2005-02-02 Thread Sverre Holm
I now have my newly assembled KPA100 running in a separate EC2 enclosure without a KIO2 in the K2. For me it is a temporary solution until I get a KIO2, but at least the setup described below actually works. 73 Sverre LA3ZA http://www.qsl.net/la3za/ -Original Message- From: Sverre

RE: [Elecraft] what should I hear using cw reverse vs

2005-02-04 Thread Sverre Holm
You are both right here, the K2 in CW normal mode, tunes upwards in beat on the low bands (160m - 17m) and tunes down in beat on the higher bands. This is due to the K2's mixing schem with low side injection for the higher bands. But the K2 remebers the CW/CWr setting per band, so I have mine

RE: [Elecraft] CW Reverse

2005-02-06 Thread Sverre Holm
-Original Message- From: Ken N4SO Sent: 6. februar 2005 16:16 The K2 owner's manual explains CW Reverse on page 94 of the Rev. E, 2003 version. The explanation is not as precise or clear as Sverre Holm's. I penciled in the CW Normal and CW Reverse information. That's a neat trick to

[Elecraft] Compilation of K2 schematics on LA3ZA mods page

2005-02-18 Thread Sverre Holm
I have just made a compilation of all the schematics of the latest revisions of the K2 and options available as a single pdf-document on the the LA3ZA Unofficial Guide to Elecraft K2 Modifications on http://www.qslnet.de/la3za/K2/mod.html and http://www.qsl.net/la3za/K2/mod.html I made it first

RE: [Elecraft] What ever happened to the shielding project?

2005-03-03 Thread Sverre Holm
-Original Message- Reading the mail here about the mods to the SSB Module...I remember that someone was playing around with some shielding to cut down on blow-by or something like that. What ever happened to that? I think it was a person in England who was experimenting with shielding on

RE: [Elecraft] K2ATOBKT question

2005-03-03 Thread Sverre Holm
-Original Message- The first step is to be sure that C70 and C71 in the VCO area have the shortest possible leads. Then the last step in that segment is to remove C70. This seems strange. Is this the same VCO C70 that we just snugged down in the first step? - The application note

RE: [Elecraft] K2 assembly page 52

2005-03-07 Thread Sverre Holm
-Original Message- I have light doubt that aroused yesterday night when I reached page 52 of part II assembly. In the current manual to build S/N 4726 it instructs to install 3 components on the bottom of the board (C91, RFC15 and C88). I remember that when I build S/N 3279 there were only

[Elecraft] K2 mods update

2005-03-28 Thread Sverre Holm
The LA3ZA Unofficial Guide to Elecraft K2 Modifications on http://www.qslnet.de/la3za/K2/mod.html and http://www.qsl.net/la3za/K2/mod.html has been updated again. I never stop wondering about all the creativity that the K2 inspires, but with thousands of builders out there, maybe one should not be

RE: [Elecraft] Navigating the Modification maze

2005-03-29 Thread Sverre Holm
-Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Thomas Beltran The LA3ZA Unofficial Guide to Elecraft K2 Modifications is an excellent resource for determining the mods that exist for the K2. What I find confusing however, is where some of the upgrades

[Elecraft] OT: Long Delayed Echoes

2005-04-02 Thread Sverre Holm
-Original Message- Guys - Let's kill this thread now. It was dealt with and explained more than a day ago via private email between us and we're all happy :-) Must be a night for Long Delayed Echoes... - Wow, you have just experienced an LDE which is longer than anyone else before

RE: [Elecraft] RF Noise canceller ?

2005-04-03 Thread Sverre Holm
-Original Message- Would this type of noise canceler not work on white noise also ? __ White noise typically arrives from random directions, with random phases, random polarizations, etc. etc. etc. and are usually from thermal and uncorrelated sources. ---

[Elecraft] Indicator LEDS in buttons

2005-04-08 Thread Sverre Holm
-Original Message- From: W3FPR - Don Wilhelm I put the tiny LED in the SPOT button, I figure its function is more intuitive in that position. -- This is neat and something I've been looking for for a long time - a solution for indicator lights for those of us

RE: [Elecraft] Scanning without end, amen.

2005-04-25 Thread Sverre Holm
-Original Message- When I'm using my scan function on 40M, it just scans past stations that are S8-9, and keeps going. I've tried different filter settings, etc. What have I missed? -- The latest firmware has two scan modes. The old one which scans silently and stops

RE: [Elecraft] Parcel is waiting...

2005-04-28 Thread Sverre Holm
Grade A submission from K3UJ! -Original Message- I THINK he said good luck with the building Please correct me if I'm wrong, Sverre. 72, Bill K3UJ = Lykke til med byggingen! 73 Sverre LA3ZA ___

RE: [Elecraft] LCD Voltmeter mod for KPA100/KAT100 in EC2

2005-05-01 Thread Sverre Holm
-Original Message- The URL for the meters : http://www.marteltesttools.com/products.php?cat=113action=detailid=69 QM-100V QM-110T QM-130M or QM-140V might work for an amp-meter. Proper current sensing resistor (shunt) will be needed and some other components. --- Nice idea

RE: [Elecraft] power to remote KPA100/KAT100 question

2005-05-09 Thread Sverre Holm
-Original Message- I am in the process of building a remote KPA100/KAT100 in an EC2 enclosure. The KAt100 is done and I am starting the amp. I would like to have one power cord with a Y connection to the KPA100 - and have the KAT100 get it's power internally in the EC2 from the KPA/100.

RE: [Elecraft] K2: Erratic action of the Hand Key Autodetect function

2005-05-09 Thread Sverre Holm
-Original Message- My K2 (and I've talked with several other K2 owners with the same problem), Serial #4338, will not always detect a hand key properly -- Autodetect is turned on in the menu - and I am using 2 1N914 diodes between the hand key contacts and the dot and dash inputs to the

RE: [Elecraft] power to remote KPA100/KAT100 question

2005-05-09 Thread Sverre Holm
-Original Message- MY kpa 100 and kat150 don't have a power switch and they are in the separate ec2 case when I turn the k2 on everything comes on. Or am I missing something - Parts of the circuitry is on as soon as power is applied to them via the Anderson connectors.

RE: [Elecraft] K2: Erratic action of the Hand Key Autodetect function

2005-05-09 Thread Sverre Holm
-Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jim Sheldon Sent: 9. mai 2005 23:41 Picked up a couple of 5711's from our local surplus electronics dealer. They appear to do the trick - hasn't glitched once since I switched out the 4148 (914) diodes.

[Elecraft] RE: K2 - LEDs that fit into the keycaps

2005-05-10 Thread Sverre Holm
I have put a picture of my K2 2098 with two LED indicators on http://www.qslnet.de/member/la3za/K2_LEDS.html. The LEDs were put in keycaps using W3FPR's method: - Green indicator for zero-beat in PRE/ATT - SPOT button. - Yellow indicator for Split/RIT/XIT in A=B - SPLIT button I have also

Morse cell phones was [Elecraft] Morse on the Tonight Show,

2005-05-15 Thread Sverre Holm
-Original Message- I have a Nokia 6360 that alerts me to incoming messages with a nice, slow CW 'SMS'. This was the default when I got the phone several years ago. It is definitely a feature! --- There is another SMS alert in there as well: 'Connecting people', at least it has

RE: [Elecraft] K2 Toroids Latest?

2005-05-16 Thread Sverre Holm
-Original Message- I have kept my K2 (1188) up to date with all the A/B mods, however at times I see references such as the one below about T7 where a toroid may have been changed from the original windings to a revised spec. Are these documented anywhere, which toroids are now different

[Elecraft] In deperate need of a backup for K2 mods list

2005-06-21 Thread Sverre Holm
I have had a problem with the K2 mods list during the latest update on June 12, so many of the links have been shifted one position to the right in the main table of general mods, http://www.qslnet.de/member/la3za/K2/mod.html I have not been able to come up with a more recent backup than the

RE: [Elecraft] KNB2 non-operation

2005-07-04 Thread Sverre Holm
-Original Message- The problem with checking most noise blanker is generating the necessary test conditions to see if the operation is correct. Most radio equipment manufacturers are rather vague in this respect and I have yet to find a piece of test equipment that will provide

RE: [Elecraft] voltmeter offset and accuracy in K2

2005-07-24 Thread Sverre Holm
If you want the K2 voltmeter to read the correct external voltage, why not connect directly from the input power jack to the external input of the voltmeter, and slide the switch/strap over to the EXT position? In this way you bypass the diode loss and there is no need for recalibration. Or are

[Elecraft] K3 - NR performance vs SGC ADSP2...still no comparison

2008-04-20 Thread Sverre Holm
Unfortunately, my K3 NR and NB are poor second performers compared to one standard, the SGC ADSP2. I've made my concerns to Lyle and Wayne and hope improvement will be placed high on the to-do list using the ADSP2 as a standard. I think the difference in performance may be due to the use of

[Elecraft] K2: Power control KPA100/KAT100 - have I fried the EL5146C?

2008-06-01 Thread Sverre Holm
My KPA100/KAT100 is located 5-6 meters away from the K2 and I am afraid I have gotten RF into the VRFDET line and fried the output buffers on both of them. The Power display on the K2 does not reach full value especially on 15, 12, 10 meters. In this setup I think it is the voltage from the

Re: [Elecraft] K2: Power control KPA100/KAT100 - have I fried the EL5146C?

2008-06-01 Thread Sverre Holm
Thanks Don for the tips: If you have the KAT2 installed, try changing its R6 value to 470 ohms as a first step. If the K60XV is installed, be certain that its VRFDET output is NOT being enabled when the KAT100 is installed and the low power output is not being used. Check RF board D9 to

[Elecraft] (no subject)

2008-06-01 Thread Sverre Holm
Thanks Don for the tips: If you have the KAT2 installed, try changing its R6 value to 470 ohms as a first step. If the K60XV is installed, be certain that its VRFDET output is NOT being enabled when the KAT100 is installed and the low power output is not being used. Check RF board D9 to

Re: [Elecraft] K2 keyer

2009-11-29 Thread Sverre Holm
I have used these settings for the K1EL-keyer to emulate the K2: Ratio 45, Weight 65, Sample 35. They work quite OK. They have been taken from here: http://www.mail-archive.com/elecraft@mailman.qth.net/msg46771.html 73 Sverre LA3ZA Unofficial Guide to K2 Modifications

[Elecraft] HRD cw copy

2009-01-21 Thread Sverre Holm
Simon (HB9DRV) wrote: ...but the Morse code decoding needs some work. I agree - I would love to have a month later this year to work on CW decoding. I have no doubts that a computer can decode better than a human, just needs someone (!) to write the decoder. Oh, ye of great faith! Just

Re: [Elecraft] HRD cw copy

2009-01-22 Thread Sverre Holm
It is interesting to see the responses to my statement on the difficulty of machines copying CW better than humans. Although this is a little off-topic here, I hope we can have a short discussion of it anyway. First, the success of negative SNR communications methods such as Olivia,JT65, and

[Elecraft] K3 Dual Receive Surprise

2009-01-24 Thread Sverre Holm
Pretty sure it's The Weird Stuff Out There. I have a page dedicated to all kinds of weird stuff in terms of propagation, see http://www.qslnet.de/member/la3za/prop/ The page has a collection of audio samples from unusual HF propagation phenomena, from round-the-world propagation (delay 138

Re: [Elecraft] K3 Dual Receive Surprise

2009-01-24 Thread Sverre Holm
On 160 m and 80 m, one kind of weird delayed propagation is the ducted one, where signals travel along magnetic field lines into space and back, but it is very rare. And on second thought, since Matt was hearing static crashes with delay between his two receivers - one imaginative

[Elecraft] Bose noise canceling headphones

2009-03-19 Thread Sverre Holm
I don't know about the Bose noise cancelling headphones, but with electronics integrated such phones may pick up RFI. I had a pair of noise cancelling Aiwa headphones, and they picked up a strong buzz whenever I was transmitting, so the noise cancelling feature was useless in practice with

[Elecraft] K3 Hissy and Noisy Audio

2009-04-06 Thread Sverre Holm
Audio is notorious for having a very subjective vocabulary, and this may make it hard to understand what is meant. I hear terms like hissy, rounder, lack of bass etc in this discussion. In an attempt to make this discussion more to the point I would suggest this list compiled by Bruce Bartlett

[Elecraft] K2: Audio hiss in headphones w/ KDSP2...

2008-07-12 Thread Sverre Holm
Tnx Lyle, I've seen that link before. It links to http://www.ac6rm.net/mailarchive/html/elecraft-list/2003-10/msg00581.html which is broken. Maybe I can browse the old archives 2003-10 from a different archive. 73, Steve N6VL Steve, Unfortunately many of the links on the LA3ZA K2 mods

[Elecraft] K2 under construction

2008-10-17 Thread Sverre Holm
I also read about some owners having to replace the headphone jack. The headphone jack will go to the back and I will put a hefty 6 mm phone plug in there. Plenty of space there, hi hi. I wouldn't be so concerned with this. I have had my K2 for 6 years without any problems with the headphone

[Elecraft] KNB2 diagnosis

2007-12-26 Thread Sverre Holm
K6DBG wrote Some of the time, my pulses just die at the output of R8, which goes to ground via L1. I'm not sure exactly what I do differently when the pulse gets past - perhaps just how hard I'm tapping? Sounds strange, if you hear the noises coming through your K2 (with the NB off), they

[Elecraft] Greyline program for your mobile phone

2008-01-28 Thread Sverre Holm
Here's a planetarium program for your Java mobile phone that also includes a greyline program: http://www.piecafe.co.uk/solun/jsolun.htm Sverre LA3ZA ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the

[Elecraft] K2 doesn't work with mic connected

2008-02-16 Thread Sverre Holm
When a K2 stops working when the mic is connected, then this sounds as if the 5 Volt in the mic connector is being shorted. This will take out several vital functions on the front panel/control boards. I would check the mic's plug. Sverre LA3ZA

RE: [Elecraft] Sidetone volume

2006-12-27 Thread Sverre Holm
I think you may have hit the nail on the head. I DO have to reduce the volume greatly when using the headphones. From my perusal of the schematic for the K2, it looks like if I changed R36 There isn't really any need to modify resistor values in the K2 to achieve what you want, unless you

RE: [Elecraft] Sidetone volume

2006-12-28 Thread Sverre Holm
-Original Message- The problem with the in-line volume control is that it will reduce the desired signal also. I believe that is exactly what is needed. The inline volume control will affect both the sidetone level and the audio output just as the suggested modification of the

[Elecraft] K2 sidetone improvement

2006-12-28 Thread Sverre Holm
I recently had a chance to implement the improved sidetone filter by TF3MA (http://www.raunvis.hi.is/~matti/TF3MA/sidetone_tf3ma.html). This was inspired by the experience of KT5X in November (http://www.ac6rm.net/mailarchive/html/elecraft-list/2006-11/msg00456.html). This mod really works

Re: [Elecraft] rx audio output K2

2007-01-07 Thread Sverre Holm
My K2's AF gain must be set at about 1-2 o'clock to be able to hear anything. Could your AGC be too agressive? What happens to AF gain as you turn AGC off (Press AGC and PRE/ATT simultaneously). If gain increases considerably the pot on the back of the control board needs some adjustment. 73

[Elecraft] K2: AF and RF volume controls

2007-01-08 Thread Sverre Holm
second, if the RF gain control is turned or touched at all, the rig immediately goes silent and all the bars in the bar-graph meter are illuminated. Over a period of about three seconds the bars are extinguished, from right to left, and the sound comes back up. The control itself works in

RE: [Elecraft] K2 Frequency Stability Data and AGC Action

2007-01-17 Thread Sverre Holm
I've finished additional K2 receiver measurements and have posted them to my web site, www.cliftonlaboratories.com. Very interesting results, in particular the AGC performance curve. I wonder about the statement In an ideal receiver, once the threshold point is passed, there will be little

[Elecraft] KNB2 - Electric fence QRN

2007-01-21 Thread Sverre Holm
I see that on the LA3ZA modification pages there are some capacitor changes that change the time constants in the KNB2. Unfortunately the links to the mods themselves seem to be broken. These links are to www.qsl.net which seems to be down for the moment. I try to avoid links to qsl net on the

[Elecraft] Monitoring IF of K2?

2007-01-22 Thread Sverre Holm
I have often wished I could monitor the output of the IF of my K2. You may find some past experience on the K2 Mods page (link below my signature), go to 1. General Mods and then click Input/Output. There is some advice from Eric - WA6HHQ /Elecraft on what to do and not to do there as well as

[Elecraft] QRP K2 10m power output

2007-01-29 Thread Sverre Holm
Ben K1NT wrote This week I was performing the power control mod (R98) and noticed that I was only getting a maximum of 7.5w at 28.8 MHz. If you used to have full output on 10 meters and don't get it any longer after having changed R98, what comes to my mind first is that you may have

[Elecraft] KBT2 non-original battery replacements?

2007-02-11 Thread Sverre Holm
I have the KBT2 battery mounting hardware for my K2, but so far no battery. The Elecraft 2.9 AH gel-cel battery costs $30.00. Unless someone convinces me, I don't see any point in transporting a battery across 9 time-zones, when similar batteries seem to be available locally. But that's the

Re: [Elecraft] sidetone mod now works

2007-03-07 Thread Sverre Holm
My L1 82 mH inductor has a DC resistance of 62 ohms. This is quite different from the 180 ohm version used in the mod. Would a series resistor be desired as Fred indicates in the message below? I have 100 ohm, 120 ohm, and 150 ohm resistors on hand. Where is this resistor installed between

[Elecraft] [EMAIL PROTECTED]

2007-04-04 Thread Sverre Holm
W1UJR wrote: I built and installed the Noise Blanker board for the K2 last night. Even when not switched on, it seems to attenuate the signal by 1-2 S units. I did not find this correct and went back and double-checked components and windings on the cores, twice! This is not correct, you should

Re: [Elecraft] Alinco DM-330MV...

2007-05-04 Thread Sverre Holm
NZ0R wrote: I'm using an Alinco DM-330MV switching power supply for my K2 with no problems. It has a control that allows me to move the frequency of any RFI I encounter from the supply, but I've never heard any. I have this supply also and use it daily. I can hear some noise in the 160 m band,

Re: [Elecraft] Tayloe mixer, was H mode mixer

2007-05-11 Thread Sverre Holm
WB6QRN wrote: And just to confuse things even more, what about the Tayloe mixer? I don't know about the H-mode mixer, but the Tayloe mixer has been patented by Motorola. Product detector and method therefor was filed in 1998 and granted in 2001 as US patent 6,230,000. See

[Elecraft] K3, smd and spectral display

2007-05-23 Thread Sverre Holm
Benny Aumala wrote: v6 SoftRock lite kit ... If you will use it with K3, ask Tony to send 11 MHz Xtal with the kit. Benny, I don't quite understand the X-tal frequency of 11 MHz. My impression is that the Softrock needs a crystal which is 4 x the center frequency, i.e. in the order of 4 x

Re [Elecraft] DX News and two questions

2006-05-24 Thread Sverre Holm
-- Date: Wed, 24 May 2006 00:13:12 +0300 From: Bekir Kemal Ataman [EMAIL PROTECTED] Is it possible at all to work from a train in motion? de TA2RX - Merhebe Bekir, Yes, you can operate from a train, see LA5XOA's story from last year about LA1TRAIN - LA9TRAIN

[Elecraft] Re: Binaural CW Reception

2006-05-27 Thread Sverre Holm
After having read the interesting thread about binaural CW and pseudo-stereo I found these two descriptions of analog circuits that are fairly simple to build. The most advanced one is by VE3VXO: http://www.arsqrp.com/ars/pages/back_issues/2001_text/0501_text/street.html . It has both phasing and

RE: [Elecraft] How to test noise blanker

2006-06-29 Thread Sverre Holm
-Original Message- Can anyone recommend a way to test my new K2 noise blanker? The simplest way to test the KNB2 is to rub a screwdriver across Q21 - the RF Preamplifier- a metal case transistor which is visible when the K2 top is removed. That will generate the kind of noise that

[Elecraft] K2 - now with three LEDs in keycaps

2005-09-25 Thread Sverre Holm
For those of you who miss indicator lights on the K2 front panel, I have now been able to add a third LED on mine. I had one for the CW zero-beat indicator in the SPOT button, one for the RIT/XIT/SPlit in the SPLIT button and now also have one for the audio filter in the XFIL/AFIL button. The

[Elecraft] K2 and FSK

2005-09-27 Thread Sverre Holm
I have read the postings on the problem of having to set the AF gain as bands are changed with FSK and PSK31 modes, and I seem to recall that I have seen a product that automates this. I believe it was a hardware device that monitored the PSK31 output and adjusted the AF level for optimum

RE: [Elecraft] K2 and FSK

2005-09-27 Thread Sverre Holm
-Original Message- that's the PSKMeter .. I have one but I don't remember who I bought it from :) ... Google sez http://www.ssiserver.com/info/pskmeter/ -- Yes, that's the one, I got several responses, the first after 12 minutes! For $39.35 the audio level is

RE: [Elecraft] Split indicator

2005-10-04 Thread Sverre Holm
-Original Message- For a 'no-holes' implementation, a small LED can be mounted in a keycap. Don W3FPR I have pictures of mine on my web site at http://www.qslnet.de/member/la3za/K2_LEDS.html Since the Split LED output from the K2 only can drive a low current LED it takes

RE: [Elecraft] Split indicator

2005-10-05 Thread Sverre Holm
-Original Message- I have pictures of mine on my web site at http://www.qslnet.de/member/la3za/K2_LEDS.html --- The schematics of how the LEDs in the buttons for the SPLIT, zero-beat indicator and KAF2 indicator are wired can now be downloaded from the page above, see about

RE: [Elecraft] KAT100 KPA100 integration question

2005-10-11 Thread Sverre Holm
-Original Message- I want to remove the KPA100 from my K2 and install it in the KAT100-2 enclosure. Since I will NOT be using any type of computer control, is it still necessary to install a KIO2 in the K2 and beef up the handling capacity of the RF choke?  -- I am running my

RE: [Elecraft] K2 battery switch

2005-10-20 Thread Sverre Holm
Didn't DK3RED do something similar some time ago? Take a look at http://www.ac6rm.net/mailarchive/html/elecraft-list/2002-06/msg00829.html. He used instead the on-off switch of the K2 with its DPDT function to bypass the in-line diode for charging of the internal battery when the K2 is turned

RE: [Elecraft] re: K2 anomaly

2005-11-29 Thread Sverre Holm
-Original Message- My RIT control got quite squirrely after a while, and I replaced it. Now it's fine. The new pot I got from Elecraft seemed more substantial (the shaft appears to wobble less) and they may be using better pots now than in my K2 no. 709. -- These comments, and my own

RE: RE: [Elecraft] K2 BFO Test

2005-12-08 Thread Sverre Holm
-Original Message- The preferred method of padding the BFO capacitors is to maintain the ratio between C173 and C174 by paralleling them with capacitors. A single capacitor from the junction to ground will be in parallel with the series combination of C173 and the varactor D38

RE: [Elecraft] K2/100 SSB Power Control Problem

2005-12-19 Thread Sverre Holm
-Original Message- If your K2 is suffering from this issue, the solution is to modify the KSB2 module. Unfortunately, I can't find the details offhand. I think it must be this link that applies: http://www.ac6rm.net/mailarchive/html/elecraft-list/2004-08/msg00887.html The

RE: [Elecraft] Horizontal Loop Antenna

2005-12-21 Thread Sverre Holm
-Original Message- I ran a square loop with 65' sides, up 20 feet, fed at a corner, through EZNEC. The antenna would be a good NVIS antenna on 80 and 40 meters, with maximum radiation straight up on 80 and at 55 degrees on 40. It would be good for QSOs up to a couple of hundred

RE: [Elecraft] How can the KNB2 be tested?

2005-12-21 Thread Sverre Holm
-Original Message- Is there a way to test the KNB2? Anything that can be measured? Do I need a different noise-source? A simple test that costs nothing in terms of test equipment is to scratch Q21 with a screwdriver, see

RE: [Elecraft] Horizontal Loop Antenna

2005-12-21 Thread Sverre Holm
-Original Message- The W0MHS Loop Skywire is a great antenna, but feed it with some ladder line. I should add that this is exactly how I feed mine. About 8 meters of ladder line (450 ohms I believe), into an Elecraft 4:1 balun and then to the KAT2/KAT100. The ladder line is

RE: [Elecraft] K2 Headphone Recommendations

2005-12-21 Thread Sverre Holm
-Original Message- I need to order a set of headphones. They'll be used on my K2 for CW primarily. Apart from comfort in wearing, and how desirable it is that the headphones supress external noise, the sensitivity is the main issue with the K2. The K2 has relatively low output

RE: [Elecraft] Headphone for hard of hearing

2005-12-22 Thread Sverre Holm
-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

RE: [Elecraft] QSO with other K2s

2005-12-26 Thread Sverre Holm
-Original Message- Now I have had my K2 for some 2 years I have still not had a single QSO with another K2 ... anyone interested in giving me a call? OZ6ABM Hi Robin, I don't think I have ever had a QSO with a K2 in Denmark. I'll be happy to have a QSO with you any time. It's not

RE: [Elecraft] K2/100 AM (MW) Broadcast Intermods on 80m

2005-12-27 Thread Sverre Holm
-Original Message- If you really can't hear them on a different receiver, check the bias voltage on the t/r switch. It should be between 90 and 150v. Low voltage here can cause this problem. The t/r switch is used whether or not the KPA100 is activated. -- Another test you

RE: [Elecraft] K2 Alignment in EU

2005-12-31 Thread Sverre Holm
-Original Message- Can someone remind me what we're supposed to use instead of WWV for VFO calibration in EU? RWM from Moscow on 9996/14996 kHz is an alternative, see http://www.irkutsk.com/radio/tis.htm and scroll to bottom of page. 73 Sverre LA3ZA http://www.qslnet.de/la3za/

RE: [Elecraft] KSB2 misbehavior

2006-01-01 Thread Sverre Holm
Thanks for the replies to my earlier post - can someone confirm that when cycling through SSbC from 1-1 to 4-1 what the states of the three compressor pins COMP0/COMP1/COMP2 are please? They start all high for SSBC 1-1, then COMP2 goes low, then COMP2 + COMP1, until all three are low for

RE: [Elecraft] Need advice - upgrade vs. K2

2006-01-07 Thread Sverre Holm
-Original Message- KNB2 Rev C dtd 3 Feb 2000 KAT2, Rev B, dtd Feb 14, 2000 KSB2, Rev B, dtd Nov 15, 199 but are there any upgrades to the un built modules? KSB2: I am aware of the ALC upgrade mod for the KSB2 dated Sept 2001, see http://www.qslnet.de/member/la3za/K2/mod.html and go

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