Date   

Re: Wanted 6/10M preamp

Tim Hague M0AFJ
 

Thanks for the info and offers, I’ve been offered a 6/10M preamp so I’m just waiting for payment info, if it doesn’t come to anything I’ll be in touch
73 Tim M0AFJ


Re: Wanted 6/10M preamp

Tony W3FLH
 

Tim,

Not sure if it's still available, but worth an email to the seller (which is not me):

https://www.eham.net/classifieds/581123

Good luck!

Tony W3FLH


Re: Wanted 6/10M preamp

Tony W3FLH
 

Not sure if this is still available, but worth an email to the seller (which is not me):

 

https://www.eham.net/classifieds/581123


Tony W3FLH


Re: Wanted 6/10M preamp

Ian - GW0KRL
 

Tim check out G4BUE's website as he did have one on there for sale.
--
Ian - GW0KRL


Re: Wanted 6/10M preamp

John G3VPW
 

Hi Tim,
I have one spare, got to do a bit of searching to find it.
Contact me direct if you are still looking.
73 John G3VPW


Re: Wanted 6/10M preamp

John G3VPW
 

Hi Tim
I have a PR6 please contact off reflector if you want to discuss.
73 John G3VPW


Line out

john ni0k
 

I'd like to record voice transmit audio and receive audio from the line out jack. How do I configure the Monitor function so that Mic audio is passed to the line out?

--
73,
-de John NI0K
https://www.qrz.com/db/NI0K


Wanted 6/10M preamp

Tim Hague M0AFJ
 

As above, I’m looking for a PR6/10 preamp if anyone has one for sale 

73 Tim M0AFJ


Re: pre order

Antonio Padua
 

OK Bob, thank you very much for the reply, I will be waiting.
73, PY3IOD - Antonio

Em seg., 12 de out. de 2020 às 23:55, Bob Evans <k5wa@...> escreveu:

Antonio,

I don't know this for certain but I imagine you will not get a response until Elecraft has received enough pre-orders to make a production run on the item or items you pre-oredered.  They are just getting a feel for how much demand there might be before they commit to a production run.  When they get enough interest, you should receive a request for money and you will know your order has been entered.  ;-)  

Good luck,
Bob K5WA


Re: No power out and receive seems to be about 20 dB down on my K3s, intermittent....

Mel Marcus
 

Mike

That is the same exact problem that I had. There is a board , just behind the K3 in "Electraft K3 Tranciever" that gives timing to the transmitter, vfo , and vfo b. without the timing there is no transmit. instead of opening the rig up, i gave the top of the rig a thump (not a mighty thump, just a thrump) just above the K3 in the sentence I mentioned above.  I have not had an issue for the last 8 months.

Mel
NE9A

-------- Original Message --------
Subject: Re: [Elecraft-K3] No power out and receive seems to be about 20
dB down on my K3s, intermittent....
From: "Mike Flowers" <mike.flowers@...>
Date: Tue, October 13, 2020 4:31 pm
To: Elecraft-K3@groups.io

I had somewhat similar symptoms a while back and followed the advice given here to check that all the TMP connectors were seated properly.   I reseated them all and my symptoms have not reappeared. 

Also, what does your K3S report as its input VDC?

-- 73 de Mike Flowers, K6MKF, NCDXC - "It's about DX!"

On Oct 13, 2020, at 2:12 PM, Jim Shepherd <nvjims@...> wrote:

It is not a powersupply problem... has done this on two different good power supply systems.
Jim W6US


Re: No power out and receive seems to be about 20 dB down on my K3s, intermittent....

Bob McGraw - K4TAX
 

I run my K3S at 14.3 volts in receive as indicated by the radio. At 100 watts output the voltage indicated by my K3S is 13.9 volts at 16.9 amps.   The power supply is an Astron SS-30M.   I find that good regulation and very low voltage drop in the power cables does minimize radio issues.

I've observed several reported instances of poor crimp on power cables at the PowerPole connectors.    Another point on power distribution,  I find it absolutely necessary to connect the radio direct to the power supply and never use one of those DC power distribution blocks for radio power.   Just remember, every connection adds series resistance and with 16+ amps of DC current flowing this added resistance can cause a noticeable voltage drop from the power supply to the radio.

73

Bob, K4TAX


Re: No power out and receive seems to be about 20 dB down on my K3s, intermittent....

George Pappayliou
 

Where are the TMP connectors?


Regards, George
------------------------------------
George S. Pappayliou


On Oct 13, 2020, at 5:32 PM, Mike Flowers <mike.flowers@...> wrote:

I had somewhat similar symptoms a while back and followed the advice given here to check that all the TMP connectors were seated properly.   I reseated them all and my symptoms have not reappeared. 

Also, what does your K3S report as its input VDC?

-- 73 de Mike Flowers, K6MKF, NCDXC - "It's about DX!"

On Oct 13, 2020, at 2:12 PM, Jim Shepherd <nvjims@...> wrote:

It is not a powersupply problem... has done this on two different good power supply systems.
Jim W6US


Re: No power out and receive seems to be about 20 dB down on my K3s, intermittent....

Mike Flowers
 

I had somewhat similar symptoms a while back and followed the advice given here to check that all the TMP connectors were seated properly.   I reseated them all and my symptoms have not reappeared. 

Also, what does your K3S report as its input VDC?

-- 73 de Mike Flowers, K6MKF, NCDXC - "It's about DX!"

On Oct 13, 2020, at 2:12 PM, Jim Shepherd <nvjims@...> wrote:

It is not a powersupply problem... has done this on two different good power supply systems.
Jim W6US


Re: No power out and receive seems to be about 20 dB down on my K3s, intermittent....

Jim Shepherd
 

It is not a powersupply problem... has done this on two different good power supply systems.
Jim W6US


Re: K3 ANT to IF OUT Conversion Gain

ve3ki
 

The IF offset calculation does not depend on the SDR, it depends on the transceiver. It is particularly complicated with the K3 because the K3 actually changes the IF offset as you change the DSP filter settings, and there is an additional roofing filter offset if you use 5-pole roofing filters. K3-specific programs like NaP3 and Win4K3Suite can use CAT commands to track the IF offset, but that's rig-specific. NaP3 has a place to input fixed per-mode offsets for each radio mode for radios other than the K3. This adds user interface complexity as well as programming complexity, but allows point-and-click to work without reconfiguring the IF offset every time you change modes.

73,
Rich VE3KI


On Tue, Oct 13, 2020 at 02:50 PM, Drew Vonada-Smith K3PA wrote:

Ah, I missed that slide.  The switch seems simple but is the kind of manual complexity I don't want to add; I already have automation built around those RX ANT functions I would just as soon not break.  Those are more important to me than the PAN is.

The IF based solution still looks pretty good to me, especially using LPPAN. Perhaps some of that is because I use the thing generally as an signal identification monitor, without much need to point and click precisely. But the point and click does seem fine with the LP-PAN...didn't realize it was any more challenging with a SDR.  All the IF information is known, it should not be hard to design all the calculation in.  I suppose just no one has done it yet in a radio agnostic way.

Thanks for the response!

73,
Drew K3PA


Re: No power out and receive seems to be about 20 dB down on my K3s, intermittent....

KE1F Lou
 

My power supplies are 30 -40 years old.  Capacitors dry out. Early power supply failures first starts out with some "defect" in the K3. I learned that the hard way.

73, Lou KE1F

On 10/13/2020 4:15 PM, Ray Maxfield wrote:

Hi Jim

Verify your +13.5 Power to the Radio.

Ray WA6VAB 

 

From: Jim Shepherd
Sent: Tuesday, October 13, 2020 12:37 PM
To: Elecraft-K3@groups.io
Subject: [Elecraft-K3] No power out and receive seems to be about 20 dB down on my K3s, intermittent....

 

During the Nevada QSO party, the rig intermittently started going from 100 watts to virtually 0 (would not move the needle on my Bird with a 250 watt element) at the same time when I released the ptt, the received audio dropped about 20 dB and the screen on my P3 would only show the peaks on the very strongest station as opposed to easily seeing stations that were S3...  A change in bands would initially clear this fault, but it would shortly reappear on the new band.

With the drop on the IF signal to the P3, it seems to be something in the antenna tuner.  I tried putting it on bypass and for a couple of transmissions saw the same problem, but it then seemed to operate normally.  I went back to the auto setting for the atu and it still was operating normal at this time. 

Any ideas on where to look for this problem?

Thanks, Jim W6US

 


Re: No power out and receive seems to be about 20 dB down on my K3s, intermittent....

Ray Maxfield
 

Hi Jim

Verify your +13.5 Power to the Radio.

Ray WA6VAB 

 

From: Jim Shepherd
Sent: Tuesday, October 13, 2020 12:37 PM
To: Elecraft-K3@groups.io
Subject: [Elecraft-K3] No power out and receive seems to be about 20 dB down on my K3s, intermittent....

 

During the Nevada QSO party, the rig intermittently started going from 100 watts to virtually 0 (would not move the needle on my Bird with a 250 watt element) at the same time when I released the ptt, the received audio dropped about 20 dB and the screen on my P3 would only show the peaks on the very strongest station as opposed to easily seeing stations that were S3...  A change in bands would initially clear this fault, but it would shortly reappear on the new band.

With the drop on the IF signal to the P3, it seems to be something in the antenna tuner.  I tried putting it on bypass and for a couple of transmissions saw the same problem, but it then seemed to operate normally.  I went back to the auto setting for the atu and it still was operating normal at this time. 

Any ideas on where to look for this problem?

Thanks, Jim W6US

 


No power out and receive seems to be about 20 dB down on my K3s, intermittent....

Jim Shepherd
 

During the Nevada QSO party, the rig intermittently started going from 100 watts to virtually 0 (would not move the needle on my Bird with a 250 watt element) at the same time when I released the ptt, the received audio dropped about 20 dB and the screen on my P3 would only show the peaks on the very strongest station as opposed to easily seeing stations that were S3...  A change in bands would initially clear this fault, but it would shortly reappear on the new band.

With the drop on the IF signal to the P3, it seems to be something in the antenna tuner.  I tried putting it on bypass and for a couple of transmissions saw the same problem, but it then seemed to operate normally.  I went back to the auto setting for the atu and it still was operating normal at this time. 

Any ideas on where to look for this problem?

Thanks, Jim W6US


Re: K3 ANT to IF OUT Conversion Gain

Charlie T, k3ICH
 

I simply wanted to use the SDR-IQ as a stand-alone receiver, not as a panadapter for another radio.

I was hoping there was something different(better) than SpectraVue.

 

Since I sold the P3 set-up,  I connect the K3S’ IF out to the RX input of an IC-7610 for a panadapter display.

Works like a charm for me.

 

Thanks for the info, Charlie k3ICH

 

 

 

 

From: Elecraft-K3@groups.io <Elecraft-K3@groups.io> On Behalf Of Wes Stewart via groups.io
Sent: Tuesday, October 13, 2020 10:15 AM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] K3 ANT to IF OUT Conversion Gain

 

Several different SDR programs will control the SDR-IQ, but why? I find most of them ghastly, with bells and whistles thrown in just because they can.

 

If your application is a bandscope, looking at a swath of spectrum around the tuned frequency and running off the K3 I-F then there should be no fuss.  The SDR follows the radio, and if you don't point-n-click or tune with the mouse wheel, you never have to touch the SpectraVue program again after setup.

 

Wes  N7WS

 

 

On Tuesday, October 13, 2020, 4:05:55 AM MST, Charlie T, k3ICH <pincon@...> wrote:

 

 

Is there any software out there other than SpectraVue usable for control of the SDR-IQ receiver?

I find the whole tuning function/changing frequency, to be rather tedious.

The combination works fine but so far, it’s a royal PITA to use.

Very likely I’m missing something, but there’s got to be something easier to just tune around, changing bands etc.

 

Since this is a far OT thread, I would request any response be direct to me at pincon at erols dot com

 

73, Charlie k3ICH

 

 

From: Elecraft-K3@groups.io <Elecraft-K3@groups.io> On Behalf Of Wes Stewart via groups.io
Sent: Monday, October 12, 2020 10:32 PM
To: Elecraft K3 Group <elecraft-k3@groups.io>; Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] K3 ANT to IF OUT Conversion Gain

 

I would call that a second receiver, not a panadapter/bandscope.  I use an SDR-IQ with SpectraVue software for my bandscope.

 

SpectraVue knows all about the K3/K3S i-f output frequencies v. mode and BW so it displays the tuned frequency in the middle of the screen regardless of those adjustments (if desired, which I do).  It offers point-n-click or mouse wheel tuning.  There is no display smearing, refresh is instantaneous.  No fuss, no muss.

 

Wes  N7WS

 

On Monday, October 12, 2020, 5:34:48 PM MST, Bob Wilson, N6TV <n6tv@...> wrote:

 

 

On Mon, Oct 12, 2020 at 4:11 PM Robert <rdiamant36@...> wrote:

I am waiting for a used K3 to arrive soon and I am already thinking about using my Perseus SDR as a no cost "panadapter" connected at the IF OUT connector for many years.

 

I've been using a Perseus SDR as a transceiver panadapter for about 12 years now.  I highly recommend ignoring K3 IF OUT; use K3 RX ANT OUT instead.  This works with many radios, not just the K3.

 

See my presentation linked from my QRZ.COM page, or the direct link below:

The technique is the same for an SO1R station:  just split RX ANT OUT to (1) RX ANT IN and (2) Perseus ANT IN using a 50 ohm "Magic T" splitter (or a 75 ohm TV splitter).  A BNC "T" connector is not recommended since it doesn't isolate the two outputs.

 

There are many advantages to doing it this way:

  • No significant loss of sensitivity (just 3 dB from splitter)
  • The panadapter span is not limited by the bandwidth of K3 IF (200 kHz?); you can monitor the entire band with the Perseus, not just a small portion
  • The waterfall doesn't "smear" or move around when you move the VFO knob on the radio.  Frequency sync is no problem.
  • Using a program like HDSDR with OmniRig enabled, you can make the cursor on the panadapter track the VFO of the K3
  • You can use mouse click and mouse wheel scroll on the HDSDR waterfall to move the K3 VFO (something not supported by a P3, but supported by the K4)
  • The "Z" command (auto-zero beat) in HDSDR zero beats CW signals much faster and more accurately than the AUTO SPOT feature, and it can move your K3 VFO to do the same as long as both are calibrated the same

Note:  you must activate RX ANT on the K3, on every band, otherwise the Perseus receives no signal on that band.

 

73,

Bob, N6TV


Re: K3 ANT to IF OUT Conversion Gain

Al N1AL
 

On 10/13/2020 11:56 AM, Robert wrote:
Hello Bob,
Very good reasoning. In the meantime I realized the many advantages of using the K3's RX ANT OUT signals.
Today I ordered the power splitter ZFSC-2-6+ (BNC connectors) from M-C.
Don't forget that power splitters only have good isolation if terminated with a good 50-ohm, non-reactive load.  For example, a 2:1 SWR is less than 10 dB return loss.

Alan N1AL