[Elecraft] Talking filter Bandwidths

I have recently replaced my CW Xtal Fiter set and done a realignment using Spectrogram. I'm now attempting to measure my selected filter bandwidths and using the -6dB points, is this incorrect ? Is -3dB now the preferred or accepted points for BW measurement specs? Why is there some apparent conf

[Elecraft] Keiying an external amp with the K2

Hi Fred, The K2 has this delay function built into its firmware. Look up '8R Hold' in the current manual. Once enabled in the menu it will keep 8R (and the Keyout line on the KPA100) keyed as long as the keying hang time is set for. 73, Eric WA6HHQ wayne burdick wrote: I have the circui

Re: [Elecraft] How to set up SSB

Nigel and all, I hope I have not caused any confusion, BUT ... I have been refering to the classical filter 'corner frequency' as the -3 dB point, which does place the upper 'physical corner' seen on the display at 400 to 500 Hz. Perhaps I should change my text to clarify. 73, Don W3FPR ---

[Elecraft] Saving the best for last- 2004 Hamfests!

Here is the list of the Hamfests for the rest of 2004. If you want an escape from the Holiday Crazies and are planning on attending a hamfest, why not take Elecraft literature along with you or If you would like to have a table showing off your Elecraft rig- let us know. Just email [EMAIL PROT

Re: [Elecraft] External linear amplifier with CW

Fred I use the keying adapter output on my K2 to key an antenna relay in my 160m vertical. You can set the release dealy in the menu system on the K2 for whatever delay you want, within reason. Check it out. 73, Bob N6WG ___ Elecraft mailing list Post t

Re: [Elecraft] External linear amplifier with CW

Fred Jensen wrote: I have the circuit from the Elecraft web site. Unfortunately, my SB-220 won't really do QSK. Any ideas on how to modify the little perf board interface to put some (hopefully adjustable) delay in the release to simulate semi-QSK with VOX for the amp? The perf-board circuit

Re: [Elecraft] External linear amplifier with CW

I have the circuit from the Elecraft web site. Unfortunately, my SB-220 won't really do QSK. Any ideas on how to modify the little perf board interface to put some (hopefully adjustable) delay in the release to simulate semi-QSK with VOX for the amp? 73, Fred K6DGW Auburn CA CM98lw Vic Rosenth

Re: [Elecraft] How to set up SSB

Greetings I have just finished installing the KSB2 into my K2 sn 3029. Both the KSB2 and the MH2 were recently bought. I downloaded both Don's, W3FPR, and Tom's, N0SS, notes for alignment using Spectrogram.Don suggests the lower roll off corner at 300Hz and Tom's plots show it at 500Hz. I se

[Elecraft] Intermittent no RX on 80/160 K2/100 #4029

I thought this problem was related to the T/R switching problem I was having and fixed (a no solder joint), but apparently I though that because I first noticed that failure on 80 meters. So I brought it into work today, and when I hooked it up to a service monitor and put a signal into it - no pr

Re: [Elecraft] External linear amplifier with CW

Thanks for the tips. The K2 PA Keyout line to the Tokyo Hy-Power "Send" input works perfectly for putting the linear amp into transmit mode. I set the T-R delay to .75 for a good delay time when sending slow code. Thanks for all the replies. 73, Joe, aa4nn K2VCO Wrote: You shouldn't have any

[Elecraft] Good noise free power supply?

Looking for a K2 power supply that is small and lightweight to use in hotel rooms. I tried the unit from Morse Express and it was just a standard notebook type supply that put over a S9 noise level into the K2. I use a MP1 antenna and it is usually within 10 ft of the power supply and rig. If I u

Re: [Elecraft] External linear amplifier with CW

Joe - aa4nn wrote: Hi 'crafters, I perused the archives and found a little bit of information on the K2 having a high voltage keying transistor for keying an external amplifier. Use of 8R Hold for delay times? I need more help on how to do this for operating in CW only. I am accustomed to li

Re: FW: [Elecraft] How to set up SSB

On Fri, 12 Nov 2004, John Magliacane wrote: Hi Dan. A simple, low gain, direct conversion receiver (oscillator, mixer, audio amplifier) will provide the necessary carrier injection (BFO) for proper audio demodulation. You can likey throw together a "pixie" style rx in less than 20 mi

[Elecraft] External linear amplifier with CW

Hi 'crafters, I perused the archives and found a little bit of information on the K2 having a high voltage keying transistor for keying an external amplifier. Use of 8R Hold for delay times? I need more help on how to do this for operating in CW only. I am accustomed to linears having key-in

[Elecraft] Re: K2 #4472 4 mhz alighment resolved

I finally got a zero beat on the www 10mhz signal and the K2 display reads 1000 at the beat tone. I had some problems as shown below. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscrib

RE: FW: [Elecraft] How to set up SSB

Hey, I just figured that out. 20K and 0.01 detect fine at a decent bandwidth, but it's output is average envelope power. You are absolutely right that I'm detecting AM. It sort of sounds like a voice when I talk, but when I whistle, it's just a constant 3v out. Not gonna work without an oscillator.

Re: FW: [Elecraft] How to set up SSB

Hi Dan. > Another idea. > > Why not some sort of RF-probe circuit? It would look just like the RF probe > in the book, but with different component values to get the time constant > down. The RF probe in the book gives about a 100 Hz bandwidth which isn't > enough (I'd want at least 5K for SSB au

Re: [Elecraft] K2 PLL Range

Yes! Thanks Jessie. A small movement of the RIT pot and the PLL Osc range BAND+/BAND- worked with stable reading except when RIT was full +ve. I am still a little concerned as the + reading is 12099.1 and the - reading actually 12078.4 so the range is over 20kHz and well outside the specified 9.5

FW: [Elecraft] How to set up SSB

Another idea. Why not some sort of RF-probe circuit? It would look just like the RF probe in the book, but with different component values to get the time constant down. The RF probe in the book gives about a 100 Hz bandwidth which isn't enough (I'd want at least 5K for SSB audio testing). It see

[Elecraft] K6XX Visible CW Tuning Indicator

Tom Hammond, N0SS, has done a really nice job with this kit. The SMT parts are encapsulated in a sealed plastic strip. The parts are removed from the strip in the order they are used. The board is well laid out and is of good quality. Tom says he only has about 15 kits ($17pp) remaining tha

Re: [Elecraft] K2: No recieve/power out on 20M thru 10M

SOLVED!!! First I would like to thank everyone very much who responded both on and off the list with help and suggestions, I'm not sure how long it would have taken me to find the problem without your support. The problem: It all did lead to one part, K2 in the BPF. K2 was in the SET position and

RE: [Elecraft] Re: Is there a K3 coming - Not at this time.

No but I bet it is a real dog. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Philip L. Carter Sent: Friday, November 12, 2004 12:21 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Re: Is there a K3 coming - Not at this time. Doesn't that K9 come o

[Elecraft] learning CW

I learned to read English over 60 years ago. I learned Morse over 53 years ago. I would still recommend to those wanting to learn English to first learn the alphabet before they attempt to go learning entire words. Now for Morse . . . . learn it anyway you can if your are inclined . . . I le

RE: [Elecraft] Elecraft XV50 Transverter on 4mtrs/70Mhz - UK/EuropeQuestion?

70MHz is also available in South Africa ... Sander Wissing Technical Consultant AdvanceNet Value Beyond Technology Tel: Fax: eMail: +27 11 465 0340 +27 11 465 0399 [EMAIL PROTECTED] -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Beha