Re: [Elecraft] Elecraft] Audio/noise diversity/phasing question

I used Bose noise cancelling phones in the 90's while doing around 250K miles a year on United. They cut the steady aircraft noise nicely, mainly the higher pitched part, not so good on the LF rumble. It seemed the steady higher frequencies were responsible for the headaches. On my radio, the

Re: [Elecraft] P3 TX Mon question

Great, thanks for the clarification, 73 Merv Hi Merv, I don't believe this changes the existing P3TXMON operation with non-Elecraft radios. Only if Alan detects that its a K3 when the P3 with P3TXMON is powered up will he actually query the radio to see if its in TX. Otherwise it will a

[Elecraft] Elecraft K3S: First Impressions

I've played with the new K3S for a little over a week now. I'm still gainfully employed, so my hours of operation have been limited. But, I think it's probably the proper time for "initial impressions". First, the Elecraft people are beyond impressive. Whether it was pre-sale advice, the offer

Re: [Elecraft] New P3 TX Monitor....unusual behavior with SWR (at times)

Having the LP-100A on the antenna side is by design. I'm not much interested in monitoring the antenna VSWR in real time, but I do want to know the power being delivered at the tail end of the station RF lineup. The "light show" on the KAT500 and the KPA500 (if it's being used) as well as the i

Re: [Elecraft] P3 TX Mon question

Hi Merv, I don't believe this changes the existing P3TXMON operation with non-Elecraft radios. Only if Alan detects that its a K3 when the P3 with P3TXMON is powered up will he actually query the radio to see if its in TX. Otherwise it will act as it does now and use detection of forward pow

Re: [Elecraft] K3S Macro Programming - Rotating Macros

This is an RTFM problem. I was confusing the KX3 Table with the K3 Table. When I used the proper values from the K3 Table, it worked perfectly. 73, Byron MACRO1-4: #11, 12, 13, 24 PF1-PF2: #45, 47 On 08/13/2015 08:14 PM, Byron Peebles wrote: I am trying to program my first "Rotating Macro", w

[Elecraft] K3S Macro Programming - Rotating Macros

I am trying to program my first "Rotating Macro", where the PF1 Button will set SPLIT+1 the first time it is pressed and held and it will UNSET SPLIT the second time it is pressed and held. I am basing this on the work by W8TN and LA3ZA, and others who have offered support here. I have had P

Re: [Elecraft] P3 TX Mon question

Alan, understand that some one will not always be happy with the way things are, any way to make that a menu selection? I would like to use the P3/TXmon with other radios, this change would not allow that? Seems that defeats the ability of the P3 with a TXmon to work with other radios.. Or d

Re: [Elecraft] Audio/noise diversity/phasing question

HI JERRY, You may be thinking of the Bose Noise Cancelling Headphones. These operate at audio and an extra microphone is added to each earbud to pick up background audio in your hamshack or workplace. I'm guessing that the signal from one of these added microphone earbuds is then inverted; a

Re: [Elecraft] P3 TX Mon question

OK, what I did was change it so that, when a K3 is connected, the P3 TX monitor will only go into transmit mode when commanded to do so by the K3, even if RF power is present on the coax. That should eliminate the false tripping. It will be in the next beta release, which should be Real Soon

[Elecraft] FS: KXV3A & PR6-10

KXV3A Interface Option $60 shipped PR6-10 Pre-Amplifier $80 shipped Paypal or money order CONUS Thanks 73 Dwight NS9I __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.h

Re: [Elecraft] New P3 TX Monitor....unusual behavior with SWR (at times)

I had a similar problem -- even at low power levels, the W2 would periodically spike a high-SWR and even show 2-3 bars of SWR when no signal was present. I swapped out the 8-pin cable connecting the sensor to the W2 and the problem went away. I re-crimped the connectors on the original

[Elecraft] Dual SYNTHESIZER installation with optional CAT scan.

The photographic trail on my Flickr account here: https://www.flickr.com/photos/ak5x/albums/72157657206930935 73. Bill-AK5X K3 SN 0069 __ Elecraft mailing list Home: http://m

Re: [Elecraft] Frequency reference for the K3 directly off a GPS

I am aware that a GPSDO etc is fine. But is it overkill for the K3? What I am trying to determine is the minimum requirement for the oscillator that will drive the K3's external reference input. The documentation says that the K3's phase stability is not affected by the external reference. That,

Re: [Elecraft] K3S Power Up Audio Pop

If you want the keep it simple answer just put a 6v dpdt relay in a box and run l and r audio thru the normally open contacts. Put a 100uf cap across the coil. Put a resistor equal to the resistance of the coil in series. Connect the other end of the resistor to the 12v switched output of the k3

Re: [Elecraft] Audio/noise diversity/phasing question

Read about AFX in the K3 or K3S manual. 73, Guy K2AV On Thursday, August 13, 2015, wrote: > I've read where a received signal is split into two signal paths, the noise > is somehow shifted 180 degrees (not sure how without affecting the desired > signal), the two signals are fed to your headset

[Elecraft] Audio/noise diversity/phasing question

I've read where a received signal is split into two signal paths, the noise is somehow shifted 180 degrees (not sure how without affecting the desired signal), the two signals are fed to your headset, one to each side, somehow our brains then perceive the signal to POP out of the noise. Does this a

Re: [Elecraft] K3S Power Up Audio Pop

On Thu,8/13/2015 9:04 AM, David Ahrendts wrote: Audio experts: I have a pair of AudioEngine 2 powered speakers servicing my beautiful new K3S (an excellent combo). On K3S power up and power down, there is pretty major audio surge pop that, I am sure, is not healthy long-term for the powered sp

Re: [Elecraft] Frequency reference for the K3 directly off a GPS

Take a look at what KA6SQG did to sync both audio and RF from GPS for this five-site 440 MHz simulcast repeater system. http://www.wb6ece.org/technical-info.htmlPlay the youtube video while flipping through the slides. You'll need headphones to get acceptable audio from the youtube. I li

[Elecraft] K3S Power Up Audio Pop

Audio experts: I have a pair of AudioEngine 2 powered speakers servicing my beautiful new K3S (an excellent combo). On K3S power up and power down, there is pretty major audio surge pop that, I am sure, is not healthy long-term for the powered speakers. Can anyone suggest a small speaker connect

Re: [Elecraft] Frequency reference for the K3 directly off a GPS

Hi Sverre, This type of 10 MHz output has short term stability problems and isn't suitable for direct drive of a K3 (imho). It *could* be used, if integrated over a long time constant (thinking many seconds) to drive a D.O., but that would take additional circuitry. It might be quite a project.

[Elecraft] Frequency reference for the K3 directly off a GPS

Some recent GPS modules (ublox Neo 7) have a programmable output that in addition to the 1 pps output can be programmed even to output 10 MHz. This output has a lot of jitter as it seems to be derived from a 48 MHz clock which is divided down in such a way as to generate a mix of short and long cyc