Date   
Re: speakers

N4KS Ken Stuber
 

If you are not on a budget, I can recommend the Elecraft SP3. Very good sound quality and a perfect match to the K3. I utilize two of them in order to take advantage of the K3's AFX feature. Elecraft's price point is comparable to YAECOMWOOD external speakers.

73, Ken N4KS

MFJ KAT3 clone

Dave R
 

Re: K3s 400 Hz filter differences...

Rob Sherwood
 

Wayne will have to answer that. Rob, NC0B


On Jan 14, 2020, at 9:45 AM, Clay Autery <KY5G@...> wrote:



Thanks for the response Mr. Sherwood!
 But I am inquiring as to why Elecraft decided to make the 6-pole 400Hz part rather than stay with the INRAD 8-pole filters?  Like the Elecraft branded "by INRAD" 8-pole 400Hz filter I bought with my K3s in 2016....  Appears to be a co-branded version of INRAD's #701.

73,

______________________
Clay Autery, KY5G
(318) 518-1389
On 01/14/20 09:15, Rob Sherwood wrote:
The reason for the 6-pole filter vs. the 5-pole filter was for much better (less) passive IMD in the roofing filter.  Some 5-pole filters limited the close-in dynamic range of the K3 to the mid 80 dB instead of better than 100 dB.  Passive IMD can occur in many components, including crystals.   My testing prompted the new filter. Rob, NC0B


On Jan 14, 2020, at 6:16 AM, Bill Maddock via Groups.Io <n4zi96@...> wrote:

 Yeah probably cost savings , doubt there’s a lot  of difference if any that you would notice. Several years ago I switched out my 200 hz filters in both my K3’s. They had the standard 5 pole filters and I upgraded to 6 pole. I couldn’t really tell difference on recieve. I compared had one 5 pole and other 6 pole and couldn’t tell difference. Probably wasted the money . I still have original 5 pole- hope to sell them one day lol

73 de Bill WW5M 




On Tuesday, January 14, 2020, 6:46 AM, Clay Autery <KY5G@...> wrote:

Probably not something I will ever notice EVEN IF/WHEN I finally get set up for diversity receive... But it really bothers me that they are "different" in a fundamental way.
The curse of borderline OCD...  <wink>

73, and thanks for the response!

______________________
Clay Autery, KY5G
(318) 518-1389
On 01/14/20 06:32, Bill Maddock via Groups.Io wrote:
Clay,

As far as diversity receive, the 2 different filters should work fine. The offset on 6 pole will guaranty that both signals are on same frequency and have same tone. As far as one being  8 pole and the other 6 pole, yes the curve on the filter will be different. I doubt very seriously that it will hurt the diversity recieve.

73 Bill WW5M 




On Tuesday, January 14, 2020, 6:26 AM, Everett N4CY via Groups.Io <everettsharp@...> wrote:

Vibroplex bought INRAD, that is why it now has the Vibroplex name.

> On Jan 14, 2020, at 6:15 AM, Clay Autery <KY5G@...> wrote:
>
> Vibroplex



Re: [Elecraft] K3s 400 Hz filter differences...

Clay Autery
 

Yep... here it is right here, wayyyy back on v5.33:

* DIVERSITY WORKS WITH MISMATCHED MAIN/SUB RX FILTERS:  Diversity mode in the K3S (or a K3 with the KSYN3A installed) now works with any combination of main/sub RX crystal filters. They can have different bandwidths or offsets, and it's not necessary to have an equal number of filters in each receiver. Note: Matched filters are optimal for diversity, but non-matched filters will still perform well.

"Matched filters are optimal...."

End of discussion as to IF I will get matched filters....  Now to decide between the "in-house" 6-pole I just bought, or an INRAD #701 that matches the one I bought with my MAIN Receiver...

73,

______________________
Clay Autery, KY5G
(318) 518-1389
On 01/14/20 11:16, Nr4c wrote:

I think you’ll find in the release notes that main/sub filters no longer need to be matched.  

However, I think I’d be happier with two alike, either 2 8-poles or 2 6-poles. 

Sent from my iPhone
...nr4c. bill


On Jan 14, 2020, at 7:18 AM, Clay Autery <KY5G@...> wrote:

The 400Hz filter on my Main RX is an Elecraft (by INRAD) 8-pole filter in a Faraday cage and no offset.
The 400Hz filter I just received for my SubRX  is an Elecraft (by Vibroplex?) that is a 6-pole filter with no Farady cage AND it has a -0.71 kHz offset.

I called support when I saw the obvious differences, and they said, "Don't worry about it.  Enter the SubRX offset exactly as on the crystal (no averaging with the [supposed] 0.00 offset on the 8-pole filter), and let the new Synthesizers do the heavy lifting." or words to that effect.

I hear what was said, and I don't want to come off like I don't trust what I was told....  But something simply is not sitting right with me on this.... a 6-pole "matched" with an 8-pole?  No offset averaging?  What about the difference in the skirts between a 6-pole and an 8-pole.... Aren't the cutoffs and cutoff rates different?  I realize that things change, and that perhaps the instructions for averaging the offsets is not applicable here... (though I don't yet understand why)

Can someone clear this up for me so even I can understand it.

Seems to me that I either need to get a matching INRAD-made 8-pole, or buy another of these new parts and try to get it matched.

Want to move on this, because IF I am going to have a hope in getting a "matching" 6-pole (new stock) 400 Hz filter, I need to try and do so from within the same batch that the one I just bought came from.
The prospect of finding an "by INRAD" 8-pole available on the market seems much less likely...

Obviously, I am operating on a number of assumptions here... which is why I am asking...


73

______________________
Clay Autery, KY5G
(318) 518-1389

    

Re: K3s 400 Hz filter differences...

redarlington
 

Because they can sell you the buck in parts for $100 or more without paying a middle man.  Just a hunch.

-Bob

On Tue, Jan 14, 2020 at 9:45 AM Clay Autery <KY5G@...> wrote:

Thanks for the response Mr. Sherwood!
 But I am inquiring as to why Elecraft decided to make the 6-pole 400Hz part rather than stay with the INRAD 8-pole filters?  Like the Elecraft branded "by INRAD" 8-pole 400Hz filter I bought with my K3s in 2016....  Appears to be a co-branded version of INRAD's #701.

73,

______________________
Clay Autery, KY5G
(318) 518-1389
On 01/14/20 09:15, Rob Sherwood wrote:
The reason for the 6-pole filter vs. the 5-pole filter was for much better (less) passive IMD in the roofing filter.  Some 5-pole filters limited the close-in dynamic range of the K3 to the mid 80 dB instead of better than 100 dB.  Passive IMD can occur in many components, including crystals.   My testing prompted the new filter. Rob, NC0B


On Jan 14, 2020, at 6:16 AM, Bill Maddock via Groups.Io <n4zi96@...> wrote:

 Yeah probably cost savings , doubt there’s a lot  of difference if any that you would notice. Several years ago I switched out my 200 hz filters in both my K3’s. They had the standard 5 pole filters and I upgraded to 6 pole. I couldn’t really tell difference on recieve. I compared had one 5 pole and other 6 pole and couldn’t tell difference. Probably wasted the money . I still have original 5 pole- hope to sell them one day lol

73 de Bill WW5M 




On Tuesday, January 14, 2020, 6:46 AM, Clay Autery <KY5G@...> wrote:

Probably not something I will ever notice EVEN IF/WHEN I finally get set up for diversity receive... But it really bothers me that they are "different" in a fundamental way.
The curse of borderline OCD...  <wink>

73, and thanks for the response!

______________________
Clay Autery, KY5G
(318) 518-1389
On 01/14/20 06:32, Bill Maddock via Groups.Io wrote:
Clay,

As far as diversity receive, the 2 different filters should work fine. The offset on 6 pole will guaranty that both signals are on same frequency and have same tone. As far as one being  8 pole and the other 6 pole, yes the curve on the filter will be different. I doubt very seriously that it will hurt the diversity recieve.

73 Bill WW5M 




On Tuesday, January 14, 2020, 6:26 AM, Everett N4CY via Groups.Io <everettsharp@...> wrote:

Vibroplex bought INRAD, that is why it now has the Vibroplex name.

> On Jan 14, 2020, at 6:15 AM, Clay Autery <KY5G@...> wrote:
>
> Vibroplex



Re: FS Elecraft K3/100, P3, K3/0 Mini & RRC units

Ray Maxfield
 

David… did you get my offer on the P3 ?  thanks  Ray WA6VAB

 

Sent from Mail for Windows 10

 

From: David Perry
Sent: Tuesday, January 14, 2020 6:29 AM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] FS Elecraft K3/100, P3, K3/0 Mini & RRC units

 

I will take the K3/0 mini plus RemoteRig boxes.

73,

Dave, N4QS

 

Re: FS Elecraft K3/100, P3, K3/0 Mini & RRC units

David Mackey
 

Hi Dave

 

Right now there are several folks who want to have the entire package. I am investigating shipping costs at the moment. I will let you know how it all works out.

 

73 Dave K1KA

 

From: <Elecraft-K3@groups.io> on behalf of David Perry <n4qs@...>
Reply-To: <Elecraft-K3@groups.io>
Date: Tuesday, January 14, 2020 at 9:35 AM
To: <Elecraft-K3@groups.io>
Subject: Re: [Elecraft-K3] FS Elecraft K3/100, P3, K3/0 Mini & RRC units

 

I will take the K3/0 mini plus RemoteRig boxes.

73,

Dave, N4QS

Re: K3s 400 Hz filter differences...

Clay Autery
 

Thanks for the response Mr. Sherwood!
 But I am inquiring as to why Elecraft decided to make the 6-pole 400Hz part rather than stay with the INRAD 8-pole filters?  Like the Elecraft branded "by INRAD" 8-pole 400Hz filter I bought with my K3s in 2016....  Appears to be a co-branded version of INRAD's #701.

73,

______________________
Clay Autery, KY5G
(318) 518-1389
On 01/14/20 09:15, Rob Sherwood wrote:

The reason for the 6-pole filter vs. the 5-pole filter was for much better (less) passive IMD in the roofing filter.  Some 5-pole filters limited the close-in dynamic range of the K3 to the mid 80 dB instead of better than 100 dB.  Passive IMD can occur in many components, including crystals.   My testing prompted the new filter. Rob, NC0B


On Jan 14, 2020, at 6:16 AM, Bill Maddock via Groups.Io <n4zi96@...> wrote:

 Yeah probably cost savings , doubt there’s a lot  of difference if any that you would notice. Several years ago I switched out my 200 hz filters in both my K3’s. They had the standard 5 pole filters and I upgraded to 6 pole. I couldn’t really tell difference on recieve. I compared had one 5 pole and other 6 pole and couldn’t tell difference. Probably wasted the money . I still have original 5 pole- hope to sell them one day lol

73 de Bill WW5M 




On Tuesday, January 14, 2020, 6:46 AM, Clay Autery <KY5G@...> wrote:

Probably not something I will ever notice EVEN IF/WHEN I finally get set up for diversity receive... But it really bothers me that they are "different" in a fundamental way.
The curse of borderline OCD...  <wink>

73, and thanks for the response!

______________________
Clay Autery, KY5G
(318) 518-1389
On 01/14/20 06:32, Bill Maddock via Groups.Io wrote:
Clay,

As far as diversity receive, the 2 different filters should work fine. The offset on 6 pole will guaranty that both signals are on same frequency and have same tone. As far as one being  8 pole and the other 6 pole, yes the curve on the filter will be different. I doubt very seriously that it will hurt the diversity recieve.

73 Bill WW5M 




On Tuesday, January 14, 2020, 6:26 AM, Everett N4CY via Groups.Io <everettsharp@...> wrote:

Vibroplex bought INRAD, that is why it now has the Vibroplex name.

> On Jan 14, 2020, at 6:15 AM, Clay Autery <KY5G@...> wrote:
>
> Vibroplex



Re: K3s 400 Hz filter differences...

Clay Autery
 

Really?  In house?

So if you ad to pick one or the other to create a matching pair, would you use the 6-pole Elecraft BY Elecraft, or dual INRAD 8-poles?

Thanks... you helped!

______________________
Clay Autery, KY5G
(318) 518-1389
On 01/14/20 08:22, Joe Subich, W4TV wrote:


The 6 pole filters are made "in house" by Elecraft.  The 8 pole
filters are an Inrad/Vibroplex product (made in Asia).

This is no different than the original 500 Hz/5 pole filters for
the K3.

73,

   ... Joe, W4TV


On 2020-01-14 7:44 AM, Clay Autery wrote:
Yes, I discovered that about 2 minutes ago while looking at INRAD.net to see if the 8-pole 400Hz was still available...  It is, BTW...

Wonder why the switch from 8-pole to 6-pole?

Cheaper to make? New synths don't "need" them?  Less need for higher gain compensation?

73,

______________________
Clay Autery, KY5G
(318) 518-1389

On 01/14/20 06:26, Everett N4CY via Groups.Io wrote:
Vibroplex bought INRAD, that is why it now has the Vibroplex name.

On Jan 14, 2020, at 6:15 AM, Clay Autery <KY5G@...> wrote:

Vibroplex









Re: CW Noise Pedestal

Clay Autery
 

Yep... I have 10643, and I don't know if it's been applied to mine....  Should have... sent it to Watsonville for a full update, but that mod does not appear on my paperwork.  Fortunately, I have it opened up to continue the odyssey of the K144xv ...

Only real way that I know is to look at the PC Board...

______________________
Clay Autery, KY5G
(318) 518-1389
On 01/14/20 08:19, Wes wrote:

Not necessarily.  Check you S/N with respect to the mod install instructions.

Wes  N7WS

On 1/14/2020 6:29 AM, wb6bee wrote:
...  However, I have a K3s, so the modification should have been factory installed....

Don
WB6BEE


Re: K3s RX Ant port question

Don Jones
 

Thank you for the responses.

I'm a little up-tight about protecting the sub rx during transmit when running legal limit with the rx ant being very close the the tx ant (40 ft or less). The EMC engineer in me is saying add a T/R switch to the rx ant. 

73,
Don KO7I 

Re: K3s 400 Hz filter differences...

Rob Sherwood
 

The reason for the 6-pole filter vs. the 5-pole filter was for much better (less) passive IMD in the roofing filter.  Some 5-pole filters limited the close-in dynamic range of the K3 to the mid 80 dB instead of better than 100 dB.  Passive IMD can occur in many components, including crystals.   My testing prompted the new filter. Rob, NC0B


On Jan 14, 2020, at 6:16 AM, Bill Maddock via Groups.Io <n4zi96@...> wrote:

 Yeah probably cost savings , doubt there’s a lot  of difference if any that you would notice. Several years ago I switched out my 200 hz filters in both my K3’s. They had the standard 5 pole filters and I upgraded to 6 pole. I couldn’t really tell difference on recieve. I compared had one 5 pole and other 6 pole and couldn’t tell difference. Probably wasted the money . I still have original 5 pole- hope to sell them one day lol

73 de Bill WW5M 




On Tuesday, January 14, 2020, 6:46 AM, Clay Autery <KY5G@...> wrote:

Probably not something I will ever notice EVEN IF/WHEN I finally get set up for diversity receive... But it really bothers me that they are "different" in a fundamental way.
The curse of borderline OCD...  <wink>

73, and thanks for the response!

______________________
Clay Autery, KY5G
(318) 518-1389
On 01/14/20 06:32, Bill Maddock via Groups.Io wrote:
Clay,

As far as diversity receive, the 2 different filters should work fine. The offset on 6 pole will guaranty that both signals are on same frequency and have same tone. As far as one being  8 pole and the other 6 pole, yes the curve on the filter will be different. I doubt very seriously that it will hurt the diversity recieve.

73 Bill WW5M 




On Tuesday, January 14, 2020, 6:26 AM, Everett N4CY via Groups.Io <everettsharp@...> wrote:

Vibroplex bought INRAD, that is why it now has the Vibroplex name.

> On Jan 14, 2020, at 6:15 AM, Clay Autery <KY5G@...> wrote:
>
> Vibroplex



Re: internal tuners sold out

n3bud
 

I bought a used KAT500 and then bought another.  Work very well with Elecraft and other radios.   I stayed away from the internal model initially because I could pick the higher power external model for just a bit more used and it is much more versatile with three antenna ports. 


Re: FS Elecraft K3/100, P3, K3/0 Mini & RRC units

David Perry
 

I will take the K3/0 mini plus RemoteRig boxes.

73,

Dave, N4QS

Re: K3s 400 Hz filter differences...

Joe Subich, W4TV
 

The 6 pole filters are made "in house" by Elecraft. The 8 pole
filters are an Inrad/Vibroplex product (made in Asia).

This is no different than the original 500 Hz/5 pole filters for
the K3.

73,

... Joe, W4TV

On 2020-01-14 7:44 AM, Clay Autery wrote:
Yes, I discovered that about 2 minutes ago while looking at INRAD.net to see if the 8-pole 400Hz was still available...  It is, BTW...
Wonder why the switch from 8-pole to 6-pole?
Cheaper to make? New synths don't "need" them?  Less need for higher gain compensation?
73,
______________________
Clay Autery, KY5G
(318) 518-1389
On 01/14/20 06:26, Everett N4CY via Groups.Io wrote:
Vibroplex bought INRAD, that is why it now has the Vibroplex name.

On Jan 14, 2020, at 6:15 AM, Clay Autery <KY5G@...> wrote:

Vibroplex

Re: CW Noise Pedestal

Wes
 

Not necessarily.  Check you S/N with respect to the mod install instructions.

Wes  N7WS

On 1/14/2020 6:29 AM, wb6bee wrote:
...  However, I have a K3s, so the modification should have been factory installed....

Don
WB6BEE


Re: internal tuners sold out

Everett N4CY
 

I don't know. Their price is around $250..

Everett N4CY

In a message dated 1/14/2020 8:01:11 AM Central Standard Time, daverickmers@... writes:

Is the MFJ version any good? They make decent automatic tuners in general. 73

Re: internal tuners sold out

Dave R
 

Is the MFJ version any good? They make decent automatic tuners in general. 73 

Re: CW Noise Pedestal

wb6bee
 

The Fan noise would explain what I am experiencing.   Variable noise on Transmit.   However, I have a K3s, so the modification should have been factory installed.   Regardless, it could still be the issue with a bad component or solder issue.    I cannot tell if the fans are running on the K3 (out of view and hearing), so I will install some indicators that I can see if when/if they come on.   If the noise is coincidental to the fans running, at least I know the cause of the problem.

Don
WB6BEE

Re: K3s 400 Hz filter differences...

Bill Maddock
 

Yeah probably cost savings , doubt there’s a lot  of difference if any that you would notice. Several years ago I switched out my 200 hz filters in both my K3’s. They had the standard 5 pole filters and I upgraded to 6 pole. I couldn’t really tell difference on recieve. I compared had one 5 pole and other 6 pole and couldn’t tell difference. Probably wasted the money . I still have original 5 pole- hope to sell them one day lol

73 de Bill WW5M 




On Tuesday, January 14, 2020, 6:46 AM, Clay Autery <KY5G@...> wrote:

Probably not something I will ever notice EVEN IF/WHEN I finally get set up for diversity receive... But it really bothers me that they are "different" in a fundamental way.
The curse of borderline OCD...  <wink>

73, and thanks for the response!

______________________
Clay Autery, KY5G
(318) 518-1389
On 01/14/20 06:32, Bill Maddock via Groups.Io wrote:
Clay,

As far as diversity receive, the 2 different filters should work fine. The offset on 6 pole will guaranty that both signals are on same frequency and have same tone. As far as one being  8 pole and the other 6 pole, yes the curve on the filter will be different. I doubt very seriously that it will hurt the diversity recieve.

73 Bill WW5M 




On Tuesday, January 14, 2020, 6:26 AM, Everett N4CY via Groups.Io <everettsharp@...> wrote:

Vibroplex bought INRAD, that is why it now has the Vibroplex name.

> On Jan 14, 2020, at 6:15 AM, Clay Autery <KY5G@...> wrote:
>
> Vibroplex