[Elecraft] Microphone capsule for K2

I have purchased together with my K2 an MH2 microphone short before it was discontinued two years ago. The reports I receive always state, that the mike has too much bass. The filters of my K2 were checked with spectrogram and - to me - appear correct. In parallel I have tried a cheap boomset

[Elecraft] KPA100 smelling....

Hi, I?ve been using my KPA100 for a while and suddenly had a strange smell in my nose - like something being very hot from too many amperes. I opened the unit, could not find anything burnt or molten but found resistors R38/R39 in the final stage hot. I still could touch them without burning

[Elecraft] bandscope/spectrum analyzer for K2

Hi folks, has ever anybody built a spectrum analyzer/bandscope for the K2? 73 Karsten ___ 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.):

[Elecraft] KPA 100 Current too high?

KPA100 is aligned according to the manual. When I key the K2/KPA100 up to 10 watts, current is up to 2 A. Looks normal. Then I set the K2 to 11 watts (KPA100 engaded) Now current is approx. 6 Amps. What are those 4 extra amps needed for? When I set K2 to 20 watts, it consumes approx. 8 amps.

[Elecraft] no access possible

Does anybody have an idea, why I can?t access the email-reflector since about one week? I tried it from different machies at different loctions: the reflector-page can?t be opened. All the rest of the elecraft-pages works fine. Also the backup server. I receive my daily digest-e-mail. I also

[Elecraft] K2 #4764 has beaten them all

In a class for novice licensees I tried to demonstrate, what intermodulation is and what the consequences are. We had two signal generators operating on frequencies that were 5 khz apart and fed those signals to various transceivers of different make. The signal strength was varied between S9

[Elecraft] strange S-meter behaviour

Re: K2 #4764. I receive a signal with - let us say - S8. So the S-meter jumps between S0 and S8. Now I would expect, that if I reduce RF-gain so that the S-meter-bar just rests at S8, there would not be any variation in S-meter-reading anymore. Wrong! Doing this, the S-meter peak reading

[Elecraft] K2 SSB slightly distorted

I?m receiving reports that my SSB slightly sounds like C-Amplifier instead of AB. This is independent of power setting and mike amp-setting, but increases, when I increase the gain of the speech processor. I?m using the Heil MH2-Mike. I?ve looked at the circuit diagram and the voltage charts,

[Elecraft] K2: how can it work with the latched relays?

No doubt: ist works, but I have a question in mind. As far as I understand, the latching relays are switched back and forth by short pulses from the I/O-controller. But: how does the controller know the initial stage of the relay in order to switch to the desired position? How does the

[Elecraft] Looking for Auto-Balanced Tuner

Hi folks, I´m looking for an tuner that works fully symmetrical like e.g. the MFJ 974h but tunes automatically in a remote place, e. g. like the elecraft longwire-tuner. I have the following idea: why not involve two lw-tuners in parallel and let them tune one leg of the balanced feedline

[Elecraft] EQP bad start for EU-Elecrafters

I listenend saturday from 15.00z onwards. Nothing on 10 an 15, very weak signals on 20, only one elecrafter, and running qrp-contest of AGCW-DL with reasonable traffic. I gave up after one hour. Too early? 73 Karsten DK4AS ___ Elecraft mailing list

[Elecraft] Bad report on SSB-modulation

Hi, I am getting reports from stations, who live in the neighbourhood that my SSB sounds like my PA is operating as Class C-Amplifier. I have checked the bias - that is ok as described in the manual. What can I do to check my modulation other than listening to other peoples reports? What

[Elecraft] Wanted: circuit diagram

Hi folks, can anybody help me with a circuit diagram for a simple pulse-generator which I can use as test-generator in order to test the function of the KNB2? I figure 2 transistors will do, but can´t recall the rest. 73 Karsten DK4AS ___ Elecraft

[Elecraft] Bandscope

Hi, have elecraft ever considered an adaper for the k2 to drive an oszilloscope as bandscope? Could be a helpful aid at least for people running the VHF-transverters. 73 Karsten DK4AS ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You

[Elecraft] KNB2 - can´t bring it to work

I have sharp pulses on all bands hitting the band about once per second, which the noiseblanker of my old IC 735 kills, but not so my K2 S/N 4765. I can - more or less - read a circuit diagramm (I don´t understand each components function in detail yet) I´ve tried some signal tracing, couldn´t

Re: [Elecraft] KNB2 - can´t bring it to work

blanker on the mailing list a while back. Perhaps Wayne or Eric might comment on whether Elecraft will be introducing a new noise blanker in the future. 73, Darrell VA7TO K2#5093 On January 22, 2006 06:43 am, Karsten Eppert(DK4AS) wrote: I have sharp pulses on all bands hitting the band

[Elecraft] sym ATU

Would elecraft ever plan a kit for a symmetric antenna-tuner? I would love to build another product from elecraft and a symmetric tuner would be my favourite. 73 Karsten K2 #4764 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be

[Elecraft] How can the KNB2 be tested?

I have the KNB2 built and installed. I can turn it on/off, set the thesholdeverything. On 40m , with low threshold, I get ghost-signals. The manual recommends to spend an additional capacitor. OK. But what I expect - the blanking of noise - does not happen at all. As I have no Noise-source,

[Elecraft] KDSP2-settings for CW use

Hi folks, has anybody experimented with the noise reduction of the KDSP2 for cw? Are there any optimum settings that one should use or are the factory settings already optimum. Up to now I´m not very much pleased with this particular feature, while the others are very helpful. Possibly I´m

[Elecraft] 2nd EU-elecrafters qso-party

Hi EU-elecrafters, after revising all your comments following last weeks EU-elecrafters qso-party, I propose the next EU qso-party for next thursday 18.30 UTC on 80m 3,558 khz minus qrm for short-skip qso and 20.00 UT on 40 m 7028 khz minus qrm for longer-distance qso if condx allow that.

[Elecraft] First EU-elecrafter qso-party

Hi folks, tonights first EU-elecrafters qso-party is over. Unfortunately. Band conditions were very poor, so I only could hear/work f5ul pa0ncv on6wj g3jkd I have no idea, whom the others worked, because i virtually couldn´t hear any more stations. Seems I picked the wrong band. I figure we

[Elecraft] EU-elecraft users: QSO!

Hi folks, I have started to assemble a user-list of EU-elecraft-builders. Who wants it can send me an email. Who is not on the list yet and lives in Europe please send your data to me. First activity: what would you think about an EU-elecrafter-cw-party next thursday (17th November)? This

[Elecraft] CW-Pitch 600 Hz or 700 Hz or what?

Hi everybody, my K2 is #4764. I am in doubt about the optimum CW-pitch. I think I remember from the old days, that the human ear has the best built in filter around 1000 Hz, so I thought, CW-crystal filters should have a pitch around 1000 Hz. Many commercial units seem to have 800 Hz, the

[Elecraft] How many Elecrafts are in Germany?

Is there a way to find out the names/e-mail-adresses of elecraft-builders in Germany? I find it hard to work 100 elecraft-stations distributed all over the world. May be easier to run a german/elecrafters-party in order to collect points for the diplome. I would be prepared to start an

[Elecraft] K2 #4764 with options finally ready today!

Yes folks, my K2 finally is ready with all options: SSB, Noise-Blanker, DSP, 160 m and 100 W-PA. I finished it 5 minutes ago. Everything is working well. The few things, that did not work right from the beginning had my own stupid faults as their reason. For all this, I spent about 55 hours.

[Elecraft] Why need a balanced line tuner?

I am happily using a doublett-antenna that I feed with a 600 Ohm ladder-feedline. When I came to decide, what kind of tuner to use, I could not find anybody to give me an answer to my questions that would satisfy me: - use a balanced tuner, like the MFJ 974 H (which I finally purchased) -

[Elecraft] K2-CW-Filter-Response: is that ok?

I have set the wide CW-Filter (Fil1) to 1,5 and aligned the BFO to a pitch of 700 Hz. I applied HF of constant frequency to the receiver-input with a signal strength that generated S9+10 db max. and plotted the S-meter versus variation of the VFO from high pitch to low pitch in 100 hz-steps.

[Elecraft] IF Filter Response relatively flat

I am not shure, if my CW-.filter(s) work(s) correctly because I find it/them rather broad regarding the shape factor. If the peak-width is set to approx. 150 Hz (0,20) the -6 db-width is around 200 Hz, but the - 60 db-width is still about 1,6 khz. I don´t have precise measurement tools, so