Re: [Elecraft] What crystal filter do you use the most?

Bob, Good comments. I think those of us who have been in ham radio for many years still think of physical filters as doing the job of specifying the radio bandwidth and forget that today's radio often is digital or partially digital where DSP does the job and filters are only used

Re: [Elecraft] What crystal filter do you use the most?

Here 400 Hz on CW, 2800 Hz mostly on CW -- though I have the 1000 Hz filter for tuning on CW and one tighter one (2100 Hz) for more crowded SSB situations. If budget had been a concern, I'd have gone with 400 Hz and the stock 2700 Hz pair. 73, Phil W7OX On 9/28/15 12:35 PM, Dan Atchison

Re: [Elecraft] What crystal filter do you use the most?

Being 95% CW and only sometimes on SSB I use almost all the time 500Hz 5-pole filter. I have 200Hz but use it very rarely. This is just my experience since beginning of K3 history. 235 countries in QRP in 2 years, all States, all Oblasts. BennyOH9NB --- Avast Antivirus on tarkistanut tämän

Re: [Elecraft] What crystal filter do you use the most?

Oops -- Here 400 Hz on CW, 2800 Hz mostly on SSB :-) Phil W7OX On 9/28/15 11:35 PM, Phil Wheeler wrote: Here 400 Hz on CW, 2800 Hz mostly on CW -- though I have the 1000 Hz filter for tuning on CW and one tighter one (2100 Hz) for more crowded SSB situations. If budget had been a concern,

Re: [Elecraft] [K1] Question about antenna tuners that I should not have to ask but do.

Looking at the KAT-1 manual, it appears that NT 2 has the capacitor on the antenna side of the tuner. I'm guessing that X10 means just that; whatever value displayed x10. If you can do the parallel/series math to derived the Z looking back into the tuner then go here:

Re: [Elecraft] What crystal filter do you use the most?

The advice I received was to try the radio stock then select what I needed. I didn't want to deal with offsets or aligning filters when I eventually get the sub RX. Because of this I opted to upgrade to the 2.8KHz and purchased the 400Hz on this list. When I get the sub rx I'll buy 250Hz x2,

Re: [Elecraft] KAT3A and KBPF3A questions

But my question s what is different in KAT3 and KBPF3A that I need to change them KAT3A has a bypass relay when the tuner is not in use. KBPF3A changes the bandpass filter for 0.5 - 2.0 MHz "band" to move the lower cutoff from 500 KHz to 100 KHz. 73, ... Joe, W4TV On 9/29/2015 11:11

[Elecraft] KAT3A and KBPF3A questions

Hello Is the K3S ATU different tan the old K3ATU installed in the K3? I was told that if I want to upgrade a K3 with general coverage to a similar K3S I need to change: KAT3A KBPF3A KSYN3AUPG KXV3B But my question s what is different in KAT3 and KBPF3A that I need to change them

[Elecraft] K3 - background hiss (noisy K3) - update

Hi, i have studied all the posts about this topic. Seems, that is still, huge confusion about that, so i will try to formulate a problem on simply way: *With low impedance earphones plugged into the audio jack on the K3, you can hear a really annoying noise (hiss) even with the AF and RF volume

[Elecraft] Filter shift

Hi all, after years fb function I have experienced strange behavior. On 3.5 Mhz band I set the width and shift on some value (no matter which). Then after swithing to another band and back settings on 3.5 band are always changed to filter 1, BW 2.2 and shift 1.6. It is posible to adjust it

[Elecraft] OT USB Scope Question

A bit off-thread, but sort of related - wondering if folks on this reflector have any experience with USB oscilloscopes. I'm considering adding an o'scope to my test bench, and came across an Australian company called Bitscope.com. They have several models and appear quite affordable. The nice

Re: [Elecraft] K3 - background hiss (noisy K3) - update

Hello Bozidar, I have K3 #5102 and also well preserved high frequency hearing. I've had the same hiss on my K3 audio since it arrived from the factory. I've used a wide range of headphones, expensive and cheap, and it's present with them all. I discovered that the fix is to introduce some

[Elecraft] K- Line & Microkeyer II interfaces

Does anyone have a diagram for connecting the A full K-Line (K3, KPA500 and KAT500) with the Microham MicroKey II. I'm following the diagram in the KAT500 manual but having problems understanding the best way to connect the PTT lines from the MK II to the radio ... I'm using the E850463 Aux

Re: [Elecraft] [K3] Test Mode TX and TX Monitor?

Steve — Sounds like that is indeed what is happening. I may look into drilling some holes in the capacitors so the charge will leak out. :-) 73, phil, K7PEH > On Sep 29, 2015, at 3:28 PM, Steve Glickstein wrote: > > I notice this too with my K3and TXMon. It appears

Re: [Elecraft] OT USB Scope Question

Hey Jim, One thing to remember with any digital scope is that you need to watch out for digital sampling artifacts such as aliasing of signals in question. There was a ham I knew that kept complaining that his AD9850 DDS module was operating on two different frequencies, sometimes at one

Re: [Elecraft] [K3] Test Mode TX and TX Monitor?

I notice this too with my K3and TXMon. It appears to occur in the Test Mode after I've previously used the transmitter. My guess is that there may be a capacitor or two holding some voltagefrom the prior real transmission. If I use the test mode first, before any transmissions, the PEP/SWR

[Elecraft] [OT] - Possibly - Small Loop Antennas For Receive

I have a K3 with the second receiver and I’d like to utilize it with a receive only antenna. I have a horrible intermittent noise that I cannot identify and is heard state-wide at the upper portion of 80 m. I’m hoping a small loop antenna might help null that noise or at least a lot of it. I

Re: [Elecraft] OT USB Scope Question

HI Phil, The PC based scopes rely in the sound card.. and from its limitations, I have gotten only as far as using Spectragram by Visualization Software.. While quite nice for what it does.. a nice Tek 2235 can't be replaced. Have a great day, --... ...-- Dale - WC7S in Wy

Re: [Elecraft] K3 - background hiss (noisy K3) - update

Hi Dale, tnx for interesting info - i have done this test and ranges on AF and RF knobs are 2-240, so no problem with that. Yes it is an early K3, S/N 28xx. I use Sennheiser CX 300-II ear-canal phones impedance 16 Ohm - maybe is this impedance too low, but accordingly to the data-sheet for LM4811

Re: [Elecraft] OT USB Scope Question

Hi Jim, I have one 200 - 800X usb scope, use it every day to inspect for proper connections, board issues, and the like. It is made in china, the manual isn't. But it runs under windows 7 - 10 and is pretty straight forward. Now that I have one.. not likely to work without one. Have a great

[Elecraft] Cabela's Specials

A number of people contacted me off list asking what the model number of the gun box I bought. I was visiting and I gave the box to my host (he doesn't know either) so I don't have it. Perhaps when I get the bill. In the mean here is some suggested info on the stackable ammo case below. 73 Fred,

Re: [Elecraft] What crystal filter do you use the most?

On my K3 I have an LP-Pan connected to my IF out on the main receiver and a FunCube Pro on the subreceiver IF out. The LP-Pan is setup to a Steinberg USB UR22 sound card. Therefore, I have two panadapters, one through Win4K3 for the main receiver, the second using NAP3 v5 to the funcube pro.

Re: [Elecraft] What crystal filter do you use the most?

The lineup here is: 2.7 & 1.9 for ssb, 500/8pole and 200/5pole for cw. I'm seldom on ssb, 95%+ on cw, so can't say anything useful for the first two filters. I use both of the cw filters as conditions and circumstances dictate. The 500cps filter is first choice and does most of the work here.

Re: [Elecraft] K3 - background hiss (noisy K3) - update

An attenuator in the phones lead might be what you need. Some are available from various audio outlets (I have an old Radio Shack - rip - one here). Turn up the attenuation until there's no background audible and you are all set. If you are handy with a soldering iron, a resistor in series with

Re: [Elecraft] K- Line & Microkeyer II interfaces

To which PTT connections are you referring? 73, ... Joe, W4TV On 9/29/2015 8:28 PM, Bill OMara wrote: Does anyone have a diagram for connecting the A full K-Line (K3, KPA500 and KAT500) with the Microham MicroKey II. I'm following the diagram in the KAT500 manual but having problems

Re: [Elecraft] No power out and no receive

Which Elecraft transceiver? Kit or factory built? Was it working before or has it never worked properly? 73, Don W3FPR On 9/29/2015 11:29 PM, way235 wrote: I have noise on all bands but don't hear any signals at all. I have a TX light when keyed and can see the meter move when I speak into

Re: [Elecraft] No power out and no receive

What is the serial number of your transceiver and do you have a callsign? Also, what revision of the manual do you have? With that information there are lots of people on here able to help you. 73 de David G4DMP On 30 Sep 2015 04:29, way235 wrote: > > I have noise on all

Re: [Elecraft] OT USB Scope Question

Hi Jim, For a number of years I used a Fluke 97B 50 mhz scope. Picked it up for $50 bucks on Ebay and used it for a number of years then sold it for $50 bucks. :-] There are some youtube reviews of PC type scopes you might check out. Best! N1BBR -- bw...@fastmail.net

Re: [Elecraft] OT USB Scope Question

I'm assembling a Softrock Ensemble RXTX rig, most likely for use as a 24x7 WSPR beacon; there are several construction steps where optional testing beyond the basic voltage, resistance, and current measurements can be done with a scope. Jim Bennett / W6JHB Folsom, CA > On Sep 29, 2015, at 2:41

Re: [Elecraft] No power out and no receive

I also tried ant 2 since it has the ATU but I have the same problem on both ant connectors. No power out and no RX just noise. -- View this message in context: http://elecraft.365791.n2.nabble.com/No-power-out-and-no-receive-tp7608524p7608527.html Sent from the Elecraft mailing list archive at

Re: [Elecraft] [K3] Test Mode TX and TX Monitor?

On 09/29/2015 04:26 PM, Phil Hystad wrote: The bar graph registered an SWR of 3:1 (normally about 1.1:1) in response to key down while in Test Mode. Yet, the bar graph acts normally showing the correct SWR in TX mode (not test). In test mode there is no power out of the K3. The SWR

Re: [Elecraft] [K3] Test Mode TX and TX Monitor?

At what power level do you see or measure this signal? I don't seem to see any power output in TEST mode during transmit. 73 Bob, K4TAX On 9/29/2015 12:23 PM, Dan Atchison wrote: Phil: Do you have a K3S by any chance. My K3S actually transmits a signal when in TEST mode! When I told

Re: [Elecraft] [K3] Test Mode TX and TX Monitor?

OK Phil. I supposed I was confused where you said " My K3S actually transmits a signal when in TEST mode!" I didn't find any measurable output when in TEST mode using my K3S. Thanks. 73 Bob, K4TAX On 9/29/2015 12:52 PM, Phil Hystad wrote: In Test mode there is no signal output at all.

Re: [Elecraft] [K3] Test Mode TX and TX Monitor?

Phil: Do you have a K3S by any chance. My K3S actually transmits a signal when in TEST mode! When I told Elecraft about it, they shrugged their heads like it can't be. The TX power appears both on my P3 (with TX MON showing both PEP and SWR), and also my LP-100A wattmeter. It's only

Re: [Elecraft] [K3] Test Mode TX and TX Monitor?

In Test mode there is no signal output at all. That is the reason for Test Mode. So, on the P3, you don’t see a signal and you don’t see signal power level. But, the fact that the SWR bar chart shows something is, to me, an anomaly. 73, phil > On Sep 29, 2015, at 10:34 AM, Bob McGraw -

[Elecraft] K3 PSK filtering

I have a K3 S/N  abt 5000 which has both main and subreceivers with all recent mods including new synth boards. The filters are all 8 pole -- main configuration is 2.8, 1.8, 400, 250.  Sub receiver is 2.8 and 400.  All are correctly configured via the K3 utility and have given me no problems on

Re: [Elecraft] [K3] Test Mode TX and TX Monitor?

Actually, I don’t have a K3S. Though, I do see another message quoted below from Dan Atchison who mentions a K3S transmitting a signal in Test mode. No signal on a K3 though. 73, phil > On Sep 29, 2015, at 11:03 AM, Bob McGraw - K4TAX wrote: > > OK Phil. I supposed I

Re: [Elecraft] K3 - background hiss (noisy K3) - update

I do not notice any hiss with K3 with any headphones. I noticed hiss with other radios. Ignacy, NO9E -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-background-hiss-noisy-K3-update-tp7608490p7608498.html Sent from the Elecraft mailing list archive at Nabble.com.

[Elecraft] [K3] Test Mode TX and TX Monitor?

To answer a few questions, I'll try to be as definitive as possible. I see, according to both the P3 TX Mon AND the LP-100A up to about 0.4 watts output from the K3S on CW mode in TEST. The sensors for both the TX Mon and the LP-100A are in series, the TX Mon immediately after the K3S and

Re: [Elecraft] K3 - background hiss (noisy K3) - update

Hello Bozidar, I suspect that the issue may be particular to your particular K3. You did not mention the S/N range of your radio, and I may be incorrect about this but I think that very early K3's had an issue similar to this, that was quickly resolved. The S/N of my K3 is in the 58XX range, and

Re: [Elecraft] K3/P3 External Keyboard Question

Check to make sure you do not have a blank macro or blank text message set up for those keys. To check the text messages: Press Ctrl-Alt-T and then use the up/down arrows to scroll through the list, look for the 1, 2 or 3 keycode. To check the macros: Press Ctrl-Alt-M and then do the same

Re: [Elecraft] [K3] Test Mode TX and TX Monitor?

If I had to guess, which is exactly what I'm doing, I think either the LPA or the HPA is generating a spurious signal and it sees a mismatch into your BPF. I would try to get it into this state and use your other radio to sniff around. On 9/29/2015 11:59 AM, Dan Atchison wrote: To answer a

Re: [Elecraft] [K3S] WinWarbler and RTTY (FSK)

I got it! Thanks to all. I finally got the darn thing working. Went into the MMTTY settings box and set “sound+com(FSK)” os similar and all is now working. Made several QSOs and then went to PSK. Thanks… …bill nr4c > On Sep 24, 2015, at 4:00 PM, Bill Conkling wrote:

Re: [Elecraft] [K3] Test Mode TX and TX Monitor?

Dan, This is very odd behavior. There should be no output in TEST mode, and no contribution to SWR from the KAT3A. The two problems may be related. I hope you can return the rig to us for analysis. It will of course be covered under warranty. 73, Wayne N6KR On Sep 29, 2015, at 11:59 AM, Dan

[Elecraft] K3 PSK Filtering

Not in Data A mode.  Using Data Xmit and PSK31 for Data MD and using P3 SVGA for keyboard.  No external software.    Just tried it again for first time today and all seems well -- I can adjust IF BW seamlessly from 50 Hz to 2.8kHz.  Apparently it was a fluke that was corrected overnight by a

[Elecraft] MMTTY & K3 not RX

Hello After a good attempt last weekend to do RTTY, now I don´t know why I am not receiving any RTTY I am using K3 + N1MM + MMTTY I tested with cables direct to notebook and on a Tascam US-125M and I can transmit but both are not receiving. Any idea about that? Thanks in