[Elecraft] Sub Receiver for K3S

[W4IEN]

Is the sub receiver for the K3S still available?  I cannot find it on the 
Elecraft website. Does anyone have one they would be willing to part with?

72/73,
EM73vx
Robin
G-QRP #12386
SKCC #7294
W4IEN 
w4...@comcast.net


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[Elecraft] sub receiver not receiving

[j...@kk9a.com]

Make sure that the SUB ANT is switched to your active antenna.

John KK9A


Madison Jones w5mikejuliet at gmail.com

[This happened once before and I forgot what the easy fix is.] K3 Sub
receiver doesn't receive. What have I forgotten to check?

Madison
W5MJ

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Re: [Elecraft] sub receiver not receiving

[hawley, charles j jr]

When you get it working, save the config on the K3 Utility. Then you can 
restore it easily if something gets unset.

Chuck Hawley
 c-haw...@illinois.edu

 Amateur Radio, KE9UW
 aka Jack, BMW Motorcycles

From: elecraft-boun...@mailman.qth.net [elecraft-boun...@mailman.qth.net] on 
behalf of John_N1JM [johnn...@gmail.com]
Sent: Wednesday, July 04, 2018 11:40 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] sub receiver not receiving

Is it turned on in the config menu?

73, John N1JM



Madison Jones-2 wrote
> [This happened once before and I forgot what the easy fix is.] K3 Sub
> receiver doesn't receive. What have I forgotten to check?
>
> Madison
> W5MJ
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Re: [Elecraft] sub receiver not receiving

[John_N1JM]

Is it turned on in the config menu?

73, John N1JM



Madison Jones-2 wrote
> [This happened once before and I forgot what the easy fix is.] K3 Sub
> receiver doesn't receive. What have I forgotten to check?
> 
> Madison
> W5MJ
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[Elecraft] sub receiver not receiving

[Madison Jones]

[This happened once before and I forgot what the easy fix is.] K3 Sub
receiver doesn't receive. What have I forgotten to check?

Madison
W5MJ
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[Elecraft] Sub Receiver quits working in Diversity mode

[Rich]

When I put my K3 #3300 FW5.57 into Diversity mode.  The sub receiver 
stops receiving after a few minutes.


If I use the sub receiver as a second receiver (no diversity) the sub RX 
never stops receiving.


Any Ideas?

Rich

K3RWN

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[Elecraft] Sub Receiver Antenna Switch

[wa9fvp]

The sub receiver connects to the AUX BNC or the ATU but not both. To correct
this I added a toggle switch and mounted it to the ANT3 position.  For my
application, I needed a way to switch between both inputs. At least for now,
I don't need the 2 meter module.  

Fortunately, I had spare TMP sockets and a short TMP cable that I pulled
from scrapped transceivers. I soldered the sockets to the toggle switch. I
plugged in two TMP cables to the outer socket.  One went to the AUX BNC and
the short TMP cable went to the TMP socket on the ATU. The center socket
went to the Sub RCVR BNC.  I wrapped toggle switch with copper tape. 

In the attached photo, so that I can get a clear shot of the toggle switch,
I disconnected the TMP from the ATU.

 





-
Jack WA9FVP

Sent from my home-brew I5 Core PC
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Re: [Elecraft] Sub Receiver & KBPF3

[Bill Frantz]

Ian has a lot of good advice below.

I have big hands -- I always look for the XL gloves -- and I 
have removed the sub receiver in my K3 several times. In 
fairness, I also knit socks using small needles, so I get 
practice with small tools.


The only problems I had were getting the TMP connectors 
connected. I had one the looked OK, but wasn't. Elecraft support 
told me how to trace the signal through the sub and it became obvious.


There is a zen to working on physical things, whether it is cars 
or K3s. Metal fasteners will tell you when you are over torquing 
them as you stretch the metal. It will be elastic before it 
takes on a permanent set or breaks and you can feel the 
elasticity. You won't be able to feel the elasticity with an 
electric screwdriver.


73 Bill AE6JV

On 4/20/17 at 1:16 AM, gm3...@ifwtech.co.uk (Ian White) wrote:


Grant is so right: practice counts for a lot. Procrastinating only
allows you to forget everything you learned the last time.

Along with training yourself, you are also 'training' the connector pins
into the correct locations for easier insertion the next time around.
The same applies to the bent-metal covers of the KRX3, which are
difficult to assemble the first time, but eventually become trained to
fit each other.

TL;DR version: As you get better, the job itself becomes easier as well.
So do it!

A few tips when replacing the KRX3:

0. Rule Zero of Elecraft assembly: All Parts Fit Exactly. If that
doesn't seem to be true, you don't have the parts aligned correctly yet.

1. Install the TMP connectors *before* attempting to mate the multi-pin
connectors. Use hemostats to handle the TMP connectors. 6in hemostats
(aka artery forceps) are very cheap on eBay. Use the locking handles to
grip the connector body at the correct angle for insertion, and feel for
the center pin. Be patient. When the center pin locates correctly, the
connector body will locate too. Now unlock the hemostat handles and use
the tips of the jaws to push the whole connector firmly into place. You
should distinctly feel the connector move inward.
Again, this is all about practice. When you have learned what a
correctly seated TMP connector looks and *feels* like, you won't forget.

Also avoid removing or disturbing TMP connectors unnecessarily. A
surprising amount of work can be done while leaving them in place - but
always check them again after reassembly.
2. The multi-pin connector at the front right of the KRX3 aligns
*exactly* with the edges of the vertical adapter board. Memorize what
this should look like when correctly assembled. Ease this connector into
place first, but don't screw anything down yet.

3. The multi-pin connector at the rear left of the KRX3 is more
difficult to align. It is more difficult to see from above, and also its
adapter board can move away from the vertical. To see what you're doing,
remove the left side panel (see tip 5) and use a screwdriver to nudge
the adapter board into the correct position. Then the KRX3 will drop
easily into place. Look in from the left-hand side to check that *all*
of the pins are *correctly* mated.

4. Remember Rule Zero. If the KRX3 does not drop easily into place with
all connectors correctly mated, or if the long retaining screws passing
through the KRX3 don't immediately find the threaded pillars below...
then something is wrong. Go back.

5. Removing the side, top and bottom covers from a K3(S) is easy. If it
makes some other part of the job more easy to do, then don't hesitate.
Contrary to doctrine, you can use an electric screwdriver to remove
cover panels without damage - but on two conditions: (a) that you use
the correct Phillips screwdriver bit; and (b) you understand that an
"electric screwdriver" is a small, low-power tool that nestles in the
hand - not a drill-driver with a half-inch chuck!
But always go back to the manual screwdriver when inserting and
tightening screws. An electric screwdriver is *not* suitable for
tightening these small screws because there is a great risk of
over-tightening and causing damage. Over-tightened screws will also be
much more difficult to remove the next time. (Even if you own an
instrument-grade electric screwdriver with a clutch that is correctly
adjusted for these particular screws, you will still make mistakes.)

---
Bill Frantz| I like the farmers' market   | Periwinkle
(408)356-8506  | because I can get fruits and | 16345 
Englewood Ave
www.pwpconsult.com | vegetables without stickers. | Los Gatos, 
CA 95032


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Re: [Elecraft] Sub Receiver & KBPF3

[Vic Rosenthal]

There are two 'secrets' for working on the subrx:
1. Take off the left side panel, even though you don't need to. Makes 
reinsertion much easier.
2. When plugging in the TMP cables, get the center conductor in before pushing 
hard on the outer part. If it is placed properly, it should go in with no 
trouble.

Vic 4X6GP

> On 19 Apr 2017, at 23:17, Grant Youngman  wrote:
> 
> 
>> Messing with the sub-receiver is such a PITA that I will procrastinate
>> putting a new filter in for weeks before I gather the courage to pull it
>> apart.  
> 
> I can't see spending the money for shipping and insurance, not to mention 
> factory charges for relatively simple work, over fear of the sub receiver. 
> 
> I've had mine in and out ( and in and out and ...) a bunch over the years 
> and, while it might seem fiddly without a bit of patience and due care, never 
> had a real issue with it.  It's always seemed to drop right in.  Had it out a 
> few weeks ago for the 'n'th time to put the LF receive mods in. 
> 
> Or maybe I've just had a lot of practice ? :)
> 
> Grant NQ5T
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Re: [Elecraft] Sub Receiver & KBPF3

[Ian White]

>> Messing with the sub-receiver is such a PITA that I will
procrastinate
>> putting a new filter in for weeks before I gather the courage to pull
it
>> apart.
>
>I can't see spending the money for shipping and insurance, not to
mention
>factory charges for relatively simple work, over fear of the sub
receiver.
>
>I've had mine in and out ( and in and out and ...) a bunch over the
years and,
>while it might seem fiddly without a bit of patience and due care,
never had
>a real issue with it.  It's always seemed to drop right in.  Had it out
a few
>weeks ago for the 'n'th time to put the LF receive mods in.
>
>Or maybe I've just had a lot of practice ? :)
>
>Grant NQ5T

Grant is so right: practice counts for a lot. Procrastinating only
allows you to forget everything you learned the last time.

Along with training yourself, you are also 'training' the connector pins
into the correct locations for easier insertion the next time around.
The same applies to the bent-metal covers of the KRX3, which are
difficult to assemble the first time, but eventually become trained to
fit each other.

TL;DR version: As you get better, the job itself becomes easier as well.
So do it!

A few tips when replacing the KRX3:

0. Rule Zero of Elecraft assembly: All Parts Fit Exactly. If that
doesn't seem to be true, you don't have the parts aligned correctly yet.

1. Install the TMP connectors *before* attempting to mate the multi-pin
connectors. Use hemostats to handle the TMP connectors. 6in hemostats
(aka artery forceps) are very cheap on eBay. Use the locking handles to
grip the connector body at the correct angle for insertion, and feel for
the center pin. Be patient. When the center pin locates correctly, the
connector body will locate too. Now unlock the hemostat handles and use
the tips of the jaws to push the whole connector firmly into place. You
should distinctly feel the connector move inward.  

Again, this is all about practice. When you have learned what a
correctly seated TMP connector looks and *feels* like, you won't forget.

Also avoid removing or disturbing TMP connectors unnecessarily. A
surprising amount of work can be done while leaving them in place - but
always check them again after reassembly. 

2. The multi-pin connector at the front right of the KRX3 aligns
*exactly* with the edges of the vertical adapter board. Memorize what
this should look like when correctly assembled. Ease this connector into
place first, but don't screw anything down yet.

3. The multi-pin connector at the rear left of the KRX3 is more
difficult to align. It is more difficult to see from above, and also its
adapter board can move away from the vertical. To see what you're doing,
remove the left side panel (see tip 5) and use a screwdriver to nudge
the adapter board into the correct position. Then the KRX3 will drop
easily into place. Look in from the left-hand side to check that *all*
of the pins are *correctly* mated.

4. Remember Rule Zero. If the KRX3 does not drop easily into place with
all connectors correctly mated, or if the long retaining screws passing
through the KRX3 don't immediately find the threaded pillars below...
then something is wrong. Go back.

5. Removing the side, top and bottom covers from a K3(S) is easy. If it
makes some other part of the job more easy to do, then don't hesitate.
Contrary to doctrine, you can use an electric screwdriver to remove
cover panels without damage - but on two conditions: (a) that you use
the correct Phillips screwdriver bit; and (b) you understand that an
"electric screwdriver" is a small, low-power tool that nestles in the
hand - not a drill-driver with a half-inch chuck! 

But always go back to the manual screwdriver when inserting and
tightening screws. An electric screwdriver is *not* suitable for
tightening these small screws because there is a great risk of
over-tightening and causing damage. Over-tightened screws will also be
much more difficult to remove the next time. (Even if you own an
instrument-grade electric screwdriver with a clutch that is correctly
adjusted for these particular screws, you will still make mistakes.)

73 from Ian GM3SEK


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Re: [Elecraft] Sub Receiver & KBPF3

[Guy Olinger K2AV]

I get the "big hands in small spaces" complaint. I have very small
hands and can do some stuff that some of my friends just simply cannot
do. On the other hand there is no way I can swing a sledge hammer on a
ground rod like they can.

Ham friends that you can bribe with 807's and a backyard grill steak
dinner are very cool.

73, Guy K2AV

On Wed, Apr 19, 2017 at 4:47 PM, M. George  wrote:
> I don't see what all the consternation is about either.  Its not that big
> of a deal and I have the K3XREF (a little less room) in a K3s and a K3 and
> both radios have the sub receiver.  Fiddly???
> 
> really?
> I don't think so.  You need to consider the design!  This isn't a 60lb
> transceiver we are talking about that you can't upgrade hardly at all.
> The foot print and weight as compared to the performance can't be beat and
> the modular design is very impressive.  It's a portable radio!  For real!
> And if you want to talk PITA, try rolling a 60 lb radio around to remove
> this, that or the other.
>
> Taking out a couple of screws and gently lifting up the sub receiver and
> remove the coax connections?  Sheesh... it's like it was the end of the
> world or something.  Take a few pictures with your phone and take your time
> and RTFM!.  Its not like there is a need to remove the sub receiver on a
> weekly basis.  I swear, I think if you were to give a $20 bill to some
> folks, they would complain that you didn't give them two $10 bills. :)
>  Just take your time and install things back again and refer to your
> pictures from your phone and did I mention RTFM?.  And on another note the
> sub receiver as installed is solid and sound mechanically IMHO.
>
> Maybe if I was 99 years old and my fingers were the size of uncooked
> bratwursts and my thumbs were the size of cucumbers, then it would be
> Fiddly (and I chewed my thumb and finger nails profusely).  I say move on
> folks!  Off my soab box... it's getting Fiddly
> up
> here!
>
> Max NG7M
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Re: [Elecraft] Sub Receiver & KBPF3

[M. George]

I don't see what all the consternation is about either.  Its not that big
of a deal and I have the K3XREF (a little less room) in a K3s and a K3 and
both radios have the sub receiver.  Fiddly???

really?
I don't think so.  You need to consider the design!  This isn't a 60lb
transceiver we are talking about that you can't upgrade hardly at all.
The foot print and weight as compared to the performance can't be beat and
the modular design is very impressive.  It's a portable radio!  For real!
And if you want to talk PITA, try rolling a 60 lb radio around to remove
this, that or the other.

Taking out a couple of screws and gently lifting up the sub receiver and
remove the coax connections?  Sheesh... it's like it was the end of the
world or something.  Take a few pictures with your phone and take your time
and RTFM!.  Its not like there is a need to remove the sub receiver on a
weekly basis.  I swear, I think if you were to give a $20 bill to some
folks, they would complain that you didn't give them two $10 bills. :)
 Just take your time and install things back again and refer to your
pictures from your phone and did I mention RTFM?.  And on another note the
sub receiver as installed is solid and sound mechanically IMHO.

Maybe if I was 99 years old and my fingers were the size of uncooked
bratwursts and my thumbs were the size of cucumbers, then it would be
Fiddly (and I chewed my thumb and finger nails profusely).  I say move on
folks!  Off my soab box... it's getting Fiddly
up
here!

Max NG7M
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Re: [Elecraft] Sub Receiver & KBPF3

[Bob Novas]

Well, I guess my point is, it would be nice if it were less fiddly and more
"elegant".  A modular radio that came apart with a lot less fuss.  Plugin
boards.  It's a packaging problem.  

I love operating the radio.  I'm just not keen on maintaining it.

Bob - W3DK

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Grant
Youngman
Sent: Wednesday, April 19, 2017 4:17 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Sub Receiver & KBPF3


> Messing with the sub-receiver is such a PITA that I will procrastinate 
> putting a new filter in for weeks before I gather the courage to pull 
> it apart.

I can't see spending the money for shipping and insurance, not to mention
factory charges for relatively simple work, over fear of the sub receiver. 

I've had mine in and out ( and in and out and ...) a bunch over the years
and, while it might seem fiddly without a bit of patience and due care,
never had a real issue with it.  It's always seemed to drop right in.  Had
it out a few weeks ago for the 'n'th time to put the LF receive mods in. 

Or maybe I've just had a lot of practice ? :)

Grant NQ5T
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Re: [Elecraft] Sub Receiver & KBPF3

[Grant Youngman]

> Messing with the sub-receiver is such a PITA that I will procrastinate
> putting a new filter in for weeks before I gather the courage to pull it
> apart.  

I can't see spending the money for shipping and insurance, not to mention 
factory charges for relatively simple work, over fear of the sub receiver. 

I've had mine in and out ( and in and out and ...) a bunch over the years and, 
while it might seem fiddly without a bit of patience and due care, never had a 
real issue with it.  It's always seemed to drop right in.  Had it out a few 
weeks ago for the 'n'th time to put the LF receive mods in. 

Or maybe I've just had a lot of practice ? :)

Grant NQ5T
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Re: [Elecraft] Sub Receiver & KBPF3

[Bob Novas]

Messing with the sub-receiver is such a PITA that I will procrastinate
putting a new filter in for weeks before I gather the courage to pull it
apart.  

Bob W3DK

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of George
Thornton
Sent: Wednesday, April 19, 2017 3:21 PM
To: Clay Autery; elecraft@mailman.qth.net
Subject: Re: [Elecraft] Sub Receiver & KBPF3

I have built several kits of all kinds going back to Heathkit days and I
built my own K2.

I had a lot of problems with the sub-Rx installation.  I have big hands and
could not seem to be able to see to line things up properly, not to mention
the pesky TMP connectors.

I am at the point with this where I will no longer attempt any mod that
requires removal of the Sub-Rx.  Everything goes back to the factory.

From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Clay
Autery
Sent: Wednesday, April 19, 2017 12:08 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Sub Receiver & KBPF3

Funny IMO, some of the best design work I've ever seen
especially considering the package volume vs. modularity and capability.

However, I WILL confess

I now own my own TMP tool, TMP connectors, coax stock, and assorted second
end connectors in case I need/want to make one of those cables...

I have not yet needed to make a cable for my own use. But I've made a bunch
for other folks,

73,

__
Clay Autery, KY5G
MONTAC Enterprises
(318) 518-1389

On 4/18/2017 10:58 PM, Christopher Hoover wrote:
>> The TMP cables were in the way and sub-receiver box was a bit 
>> difficult getting the SUBIN and SUBOUT boards to align and mate properly.
>
> I installed mine myself too. (And I just r/r recently with the 
> addition of the gen coverage bp filters on the main board.) It is 
> certainly fiddly. The mechanical design leaves much to be desired.
>
> 73, Christopher AI6KG.
>
> On Sun, Apr 16, 2017 at 4:27 AM, wa9fvp
<rep...@willcoele.com><mailto:rep...@willcoele.com%3e> wrote:
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Re: [Elecraft] Sub Receiver & KBPF3

[George Thornton]

I have built several kits of all kinds going back to Heathkit days and I built 
my own K2.

I had a lot of problems with the sub-Rx installation.  I have big hands and 
could not seem to be able to see to line things up properly, not to mention the 
pesky TMP connectors.

I am at the point with this where I will no longer attempt any mod that 
requires removal of the Sub-Rx.  Everything goes back to the factory.

From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Clay 
Autery
Sent: Wednesday, April 19, 2017 12:08 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Sub Receiver & KBPF3

Funny IMO, some of the best design work I've ever seen
especially considering the package volume vs. modularity and capability.

However, I WILL confess

I now own my own TMP tool, TMP connectors, coax stock, and assorted
second end connectors in case I need/want to make one of those cables...

I have not yet needed to make a cable for my own use. But I've made a
bunch for other folks,

73,

__
Clay Autery, KY5G
MONTAC Enterprises
(318) 518-1389

On 4/18/2017 10:58 PM, Christopher Hoover wrote:
>> The TMP cables were in the way and sub-receiver box was a bit difficult
>> getting the SUBIN and SUBOUT boards to align and mate properly.
>
> I installed mine myself too. (And I just r/r recently with the addition
> of the gen coverage bp filters on the main board.) It is certainly
> fiddly. The mechanical design leaves much to be desired.
>
> 73, Christopher AI6KG.
>
> On Sun, Apr 16, 2017 at 4:27 AM, wa9fvp 
> <rep...@willcoele.com><mailto:rep...@willcoele.com%3e> wrote:
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Re: [Elecraft] Sub Receiver & KBPF3

[Clay Autery]

Funny  IMO, some of the best design work I've ever seen
especially considering the package volume vs. modularity and capability.

However, I WILL confess

I now own my own TMP tool, TMP connectors, coax stock, and assorted
second end connectors in case I need/want to make one of those cables...

I have not yet needed to make a cable for my own use.  But I've made a
bunch for other folks,

73,

__
Clay Autery, KY5G
MONTAC Enterprises
(318) 518-1389

On 4/18/2017 10:58 PM, Christopher Hoover wrote:
>> The TMP cables were in the way and sub-receiver box was a bit difficult
>> getting the SUBIN and SUBOUT boards to align and mate properly.
>
> I installed mine myself too.(And I just r/r recently with the addition
> of the gen coverage bp filters on the main board.)   It is certainly
> fiddly.  The mechanical design leaves much to be desired.
>
> 73, Christopher  AI6KG.
>
> On Sun, Apr 16, 2017 at 4:27 AM, wa9fvp  wrote:
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Re: [Elecraft] Sub Receiver & KBPF3

[Ron Wilcox]

I have a medical background, this was my first kit of any kind to do with
electronics. While I did not find it easy, I had no problems putting it
together. However it was not intuitive for me and had to study (not just
read) the instructions very carefully, and usually more than once or twice.

Today is a good day to have a Great Day!
73   Ron Wilcox KF7ZN

On Wed, Apr 19, 2017 at 7:30 AM, Nr4c  wrote:

> Really?  I have been quite please at the mechanical design of my Elecraft
> gear.
>
> Yes, the sub-Rec is a bit tricky to align but with a bit of care and I
> remove the side panel (with handle) for better view.
>
> Sent from my iPhone
> ...nr4c. bill
>
>
> On Apr 18, 2017, at 11:58 PM, Christopher Hoover 
> wrote:
>
> >>
> >> The TMP cables were in the way and sub-receiver box was a bit difficult
> >> getting the SUBIN and SUBOUT boards to align and mate properly.
> >
> >
> > I installed mine myself too.(And I just r/r recently with the
> addition
> > of the gen coverage bp filters on the main board.)   It is certainly
> > fiddly.  The mechanical design leaves much to be desired.
> >
> > 73, Christopher  AI6KG.
> >
> >> On Sun, Apr 16, 2017 at 4:27 AM, wa9fvp  wrote:
> >>
> >> I just installed the Sub receiver and the KBPF3A in my K3S.  I have one
> >> complaint and one concern.
> >>
> >> First the activation of the KBPF3A is very vague.  It's mentioned in the
> >> users manual on page 60 (the configuration menu) but there's nothing
> that
> >> says, while in (CONFIG:KBFP3) that you have to press [SUB] and then
> select
> >> "nor".  I double checked the installation manual for the sub receiver
> and
> >> the KBFP3A but there was nothing about activating the General Coverage
> >> filters.
> >>
> >> My concern is;  I consider myself as an experienced kit builder but for
> me,
> >> it was a bit difficult installing the Sub-Receiver.  The TMP cables
> were in
> >> the way and sub-receiver box was a bit difficult getting the SUBIN and
> >> SUBOUT boards to align and mate properly.  Someone who is new to kit
> >> building would have a more difficult time.
> >>
> >> The sub-receiver is working great and the one thing I like about it is;
> >> it's
> >> a clone of the main receiver with FM, AM, 2.8, 400 and 250Hz filters.  I
> >> wonder how the sub-receiver would stack-up on Sherwood Engineering's
> test
> >> data.
> >>
> >> Jack WA9FVP
> >> Willco Electronics
> >>
> >>
> >>
> >> -
> >> Jack WA9FVP
> >>
> >> Sent from my home-brew I5 Core PC
> >> --
> >> View this message in context: http://elecraft.365791.n2.
> >> nabble.com/Sub-Receiver-KBPF3-tp7629327.html
> >> Sent from the Elecraft mailing list archive at Nabble.com.
> >> __
> >> Elecraft mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> >>
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Re: [Elecraft] Sub Receiver & KBPF3

[Nr4c]

Really?  I have been quite please at the mechanical design of my Elecraft gear. 

Yes, the sub-Rec is a bit tricky to align but with a bit of care and I remove 
the side panel (with handle) for better view. 

Sent from my iPhone
...nr4c. bill


On Apr 18, 2017, at 11:58 PM, Christopher Hoover  wrote:

>> 
>> The TMP cables were in the way and sub-receiver box was a bit difficult
>> getting the SUBIN and SUBOUT boards to align and mate properly.
> 
> 
> I installed mine myself too.(And I just r/r recently with the addition
> of the gen coverage bp filters on the main board.)   It is certainly
> fiddly.  The mechanical design leaves much to be desired.
> 
> 73, Christopher  AI6KG.
> 
>> On Sun, Apr 16, 2017 at 4:27 AM, wa9fvp  wrote:
>> 
>> I just installed the Sub receiver and the KBPF3A in my K3S.  I have one
>> complaint and one concern.
>> 
>> First the activation of the KBPF3A is very vague.  It's mentioned in the
>> users manual on page 60 (the configuration menu) but there's nothing that
>> says, while in (CONFIG:KBFP3) that you have to press [SUB] and then select
>> "nor".  I double checked the installation manual for the sub receiver and
>> the KBFP3A but there was nothing about activating the General Coverage
>> filters.
>> 
>> My concern is;  I consider myself as an experienced kit builder but for me,
>> it was a bit difficult installing the Sub-Receiver.  The TMP cables were in
>> the way and sub-receiver box was a bit difficult getting the SUBIN and
>> SUBOUT boards to align and mate properly.  Someone who is new to kit
>> building would have a more difficult time.
>> 
>> The sub-receiver is working great and the one thing I like about it is;
>> it's
>> a clone of the main receiver with FM, AM, 2.8, 400 and 250Hz filters.  I
>> wonder how the sub-receiver would stack-up on Sherwood Engineering's test
>> data.
>> 
>> Jack WA9FVP
>> Willco Electronics
>> 
>> 
>> 
>> -
>> Jack WA9FVP
>> 
>> Sent from my home-brew I5 Core PC
>> --
>> View this message in context: http://elecraft.365791.n2.
>> nabble.com/Sub-Receiver-KBPF3-tp7629327.html
>> Sent from the Elecraft mailing list archive at Nabble.com.
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to c...@murgatroid.com
>> 
> __
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Re: [Elecraft] Sub Receiver & KBPF3

[Christopher Hoover]

>
> The TMP cables were in the way and sub-receiver box was a bit difficult
> getting the SUBIN and SUBOUT boards to align and mate properly.


I installed mine myself too.(And I just r/r recently with the addition
of the gen coverage bp filters on the main board.)   It is certainly
fiddly.  The mechanical design leaves much to be desired.

73, Christopher  AI6KG.

On Sun, Apr 16, 2017 at 4:27 AM, wa9fvp  wrote:

> I just installed the Sub receiver and the KBPF3A in my K3S.  I have one
> complaint and one concern.
>
> First the activation of the KBPF3A is very vague.  It's mentioned in the
> users manual on page 60 (the configuration menu) but there's nothing that
> says, while in (CONFIG:KBFP3) that you have to press [SUB] and then select
> "nor".  I double checked the installation manual for the sub receiver and
> the KBFP3A but there was nothing about activating the General Coverage
> filters.
>
> My concern is;  I consider myself as an experienced kit builder but for me,
> it was a bit difficult installing the Sub-Receiver.  The TMP cables were in
> the way and sub-receiver box was a bit difficult getting the SUBIN and
> SUBOUT boards to align and mate properly.  Someone who is new to kit
> building would have a more difficult time.
>
> The sub-receiver is working great and the one thing I like about it is;
> it's
> a clone of the main receiver with FM, AM, 2.8, 400 and 250Hz filters.  I
> wonder how the sub-receiver would stack-up on Sherwood Engineering's test
> data.
>
> Jack WA9FVP
> Willco Electronics
>
>
>
> -
> Jack WA9FVP
>
> Sent from my home-brew I5 Core PC
> --
> View this message in context: http://elecraft.365791.n2.
> nabble.com/Sub-Receiver-KBPF3-tp7629327.html
> Sent from the Elecraft mailing list archive at Nabble.com.
> __
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Re: [Elecraft] Sub Receiver I.F. Tap

[Edward R Cole]

Jack,

If by "mistune" you mean that the impedance will be loaded down, yes 
that is likely.  A buffer amp following will solve that .  My reply 
was merely to indicate tapping the 1st IF at W3 is a good 
decision.  I run both main Rx IF and sub Rx IF to LP-Pan that have 
the optional IF amps installed (now std in the LP-Pan 2).  Both 
appear to work fine bringing out the 1st IF to my LP-Pan which in 
turn provide IQ baseband input to a four port soundcard for diversity 
reception on 2m-eme (a special application using digital modes).


I did determine that feeding the 1st IF to the 2nd IF of the K3 
loaded the panoramic display at frequency zero, so I select a xtal 
location that is unfilled to effectively disconnect the 2nd IF.  But 
normal use of the K3 using the entire receivers works fine.  I do not 
detect any loading of the 1st IF by either LP-Pan.


Now probably one should use a 0.01uF cap instead of 0.001uF for 8.215 
MHz.  That will provide a little more RF coupling.


One other item I did omit is the use of a ferrite on the RG-174 for 
isolating the shield for any noise introduction to the IF.


73, Ed - KL7UW


From: wa9fvp <rep...@willcoele.com>
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Sub Receiver I.F. Tap
Message-ID: <1492360444817-7629368.p...@n2.nabble.com>
Content-Type: text/plain; charset=us-ascii

 Edward R Cole  wrote ;

I brought out the 1st IF of the sub receiver from that point using
0.001 uF disc ceramic coupling cap to RG-174 coax snaked out thru a
hole in the sub-Rx shield to a BNC on  back panel of the K3.

-

I think that connecting the coax via a capacitor would load and mistune the
I.F..  That's why the main receiver was designed with a buffer JFET.

-
Jack WA9FVP


73, Ed - KL7UW
  http://www.kl7uw.com
Dubus-NA Business mail:
  dubus...@gmail.com 


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Re: [Elecraft] Sub Receiver I.F. Tap

[wa9fvp]

 Edward R Cole  wrote ;

I brought out the 1st IF of the sub receiver from that point using 
0.001 uF disc ceramic coupling cap to RG-174 coax snaked out thru a 
hole in the sub-Rx shield to a BNC on  back panel of the K3. 

-

I think that connecting the coax via a capacitor would load and mistune the
I.F..  That's why the main receiver was designed with a buffer JFET. 



-
Jack WA9FVP

Sent from my home-brew I5 Core PC
--
View this message in context: 
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Re: [Elecraft] Sub Receiver I.F. Tap

[Edward R Cole]

I brought out the 1st IF of the sub receiver from that point using 
0.001 uF disc ceramic coupling cap to RG-174 coax snaked out thru a 
hole in the sub-Rx shield to a BNC on  back panel of the K3.

http://www.kl7uw.com/LINRAD.htm

scroll down to the heading: Connecting K3 Sub-Receiver IF to LP-Pan


Date: Sat, 15 Apr 2017 20:52:46 -0700 (MST)
From: wa9fvp <rep...@willcoele.com>
To: elecraft@mailman.qth.net
Subject: [Elecraft] Sub Receiver I.F. Tap
Message-ID: <1492314766397-7629352.p...@n2.nabble.com>
Content-Type: text/plain; charset=UTF-8

I notice on the sub-receiver schematic dated 8/18/08 that there was a
connector for a plug-in board. I assume it was for an I.F. buffer plug-in
circuit that connects to J93 for an I.F. tap.  I didn?t see that on the
KRX3A but the jumper W3 is near connector J78. Is it possible to attach a
J309 to and duplicate the circuit on the main receiver?

John Albert WA9FVP
WillcoElectronics.


73, Ed - KL7UW
  http://www.kl7uw.com
Dubus-NA Business mail:
  dubus...@gmail.com 
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Re: [Elecraft] Sub Receiver I.F. Tap

[Harry Yingst via Elecraft]

Yes it is possible 
I was going to replacate the buffer amp as it was on the main receiver for my 
sub receiver 




 Original message 
From: wa9fvp <rep...@willcoele.com> 
Date: 2017-04-15  11:52 PM  (GMT-05:00) 
To: elecraft@mailman.qth.net 
Subject: [Elecraft] Sub Receiver I.F. Tap 

I notice on the sub-receiver schematic dated 8/18/08 that there was a
connector for a plug-in board. I assume it was for an I.F. buffer plug-in
circuit that connects to J93 for an I.F. tap.  I didn’t see that on the
KRX3A but the jumper W3 is near connector J78. Is it possible to attach a
J309 to and duplicate the circuit on the main receiver?

John Albert WA9FVP
WillcoElectronics.





-
Jack WA9FVP

Sent from my home-brew I5 Core PC
--
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[Elecraft] Sub Receiver I.F. Tap

[wa9fvp]

I notice on the sub-receiver schematic dated 8/18/08 that there was a
connector for a plug-in board. I assume it was for an I.F. buffer plug-in
circuit that connects to J93 for an I.F. tap.  I didn’t see that on the
KRX3A but the jumper W3 is near connector J78. Is it possible to attach a
J309 to and duplicate the circuit on the main receiver?

John Albert WA9FVP
WillcoElectronics.





-
Jack WA9FVP

Sent from my home-brew I5 Core PC
--
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Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] Sub Receiver & KBPF3

[Ron D'Eau Claire]

Hi Jack:

Page 16 of the KBPF3A manual says under the heading "Enable the KBPF3A
Module":

"Enable the KBPF3A for either the main or sub receiver using the CONFIG menu
as described in the
Owner's Manual. The KBPF3A will not operate until this is done!" 

Perhaps I should have repeated the whole procedure in the KPBP3A manual. 

I think you will get a LOT of agreement that installing the KRX3 module is
one of the most complex bits of assembly of the K3S. We've made many
"tweaks" to the procedure in the attempt to make it easier, but it is still
not simple. 

73, Ron AC7AC


-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of wa9fvp
Sent: Saturday, April 15, 2017 1:27 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Sub Receiver & KBPF3

I just installed the Sub receiver and the KBPF3A in my K3S.  I have one
complaint and one concern. 

First the activation of the KBPF3A is very vague.  It's mentioned in the
users manual on page 60 (the configuration menu) but there's nothing that
says, while in (CONFIG:KBFP3) that you have to press [SUB] and then select
"nor".  I double checked the installation manual for the sub receiver and
the KBFP3A but there was nothing about activating the General Coverage
filters.

My concern is;  I consider myself as an experienced kit builder but for me,
it was a bit difficult installing the Sub-Receiver.  The TMP cables were in
the way and sub-receiver box was a bit difficult getting the SUBIN and
SUBOUT boards to align and mate properly.  Someone who is new to kit
building would have a more difficult time.

The sub-receiver is working great and the one thing I like about it is; it's
a clone of the main receiver with FM, AM, 2.8, 400 and 250Hz filters.  I
wonder how the sub-receiver would stack-up on Sherwood Engineering's test
data. 

Jack WA9FVP
Willco Electronics



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Jack WA9FVP

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[Elecraft] Sub Receiver & KBPF3

[wa9fvp]

I just installed the Sub receiver and the KBPF3A in my K3S.  I have one
complaint and one concern. 

First the activation of the KBPF3A is very vague.  It's mentioned in the
users manual on page 60 (the configuration menu) but there's nothing that
says, while in (CONFIG:KBFP3) that you have to press [SUB] and then select
"nor".  I double checked the installation manual for the sub receiver and
the KBFP3A but there was nothing about activating the General Coverage
filters.

My concern is;  I consider myself as an experienced kit builder but for me,
it was a bit difficult installing the Sub-Receiver.  The TMP cables were in
the way and sub-receiver box was a bit difficult getting the SUBIN and
SUBOUT boards to align and mate properly.  Someone who is new to kit
building would have a more difficult time.

The sub-receiver is working great and the one thing I like about it is; it's
a clone of the main receiver with FM, AM, 2.8, 400 and 250Hz filters.  I
wonder how the sub-receiver would stack-up on Sherwood Engineering's test
data. 

Jack WA9FVP
Willco Electronics



-
Jack WA9FVP

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Re: [Elecraft] Sub Receiver Questions

[Bob Wilson, N6TV]

On Mar 27, 2017 7:22 PM, "wa9fvp"  wrote:

While receiving on 20 meters, for example, on the main Receiver, can I
receive another band using the Sub-Receiver connected to the Receiver In
port?


If CONFIG:VFO IND is set to YES, use the AUX port for the SubRx antenna
instead of RX ANT IN.  The SUB can listen to MAIN's antenna (Transmit Ant
or RX Ant) or to AUX.

From the K3 Owner's Manual:

"Sub Receiver Band Independence

"If CONFIG:VFO IND is set to YES, you can set
the sub receiver to a different band from main.
Hold BSET, then tap BAND up/down to select the
sub receiver’s band. If you only use band-
independence for the sub occasionally, you may
want to assign VFO IND to a programmable
function switch (pg. 21).

"If the two receivers are sharing the main
antenna path, putting the sub receiver on a
higher-frequency band than main may result in
signal loss in the sub. This is due to sharing of the
main receiver’s low-pass filters. If you select an
incompatible band combination, the K3 briefly
displays USE AUX as a warning. To avoid sub
receiver signal loss, use the sub’s AUX input."

With SUB active, hold down RX ANT to toggle the Sub RX antenna between MAIN
and AUX.

I understand that the Sub receiver's audio is fed to the other stereo
channel but is that true for the Line Out port?  Can the Sub-Receiver feed
audio via the USB CODAC?


Yes.  When SUB is enabled, SUB audio should be fed to the Right audio
channel of both LINE OUT and the USB Audio CODEC.

73,
Bob, N6TV
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[Elecraft] Sub Receiver Questions

[wa9fvp]

While receiving on 20 meters, for example, on the main Receiver, can I
receive another band using the Sub-Receiver connected to the Receiver In
port?  I understand that the Sub receiver's audio is fed to the other stereo
channel but is that true for the Line Out port?  Can the Sub-Receiver feed
audio via the USB CODAC? 



-
Jack WA9FVP

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[Elecraft] Sub Receiver RTTY Decode

[Frank Westphal]

I am using a Navigator interface with an Elecraft K3.  The Navigator is 
connected to the K3 with a factory made cable.  The system works great 
on channel one with HRD/MMTTY/MixW software.
I would like to be able to decode RTTY received on VFO B of the K3 when 
working DX split.  The K3 line out has the right channel as VFO B audio 
and the Navigator cable has a wire for channel 2.  I have tried MMTTY 
selecting the right channel on the options misc menu.  I have also tried 
MixW using the /2 parameter when launching the program for 2 channel 
operation.  HRD shows a left and right channel on the sound card screen 
but I don't see any way to set it in the program options.
No matter what program or options I try adjusting, the channel 2 control 
on the Navigator does not cause the audio on channel 2 to increase from 
zero.  I don't know if the Navigator channel 2 is broken or if I am 
missing something in the setup or is it just not possible to do what I 
am trying to do.
I would appreciate hearing from anyone who have successfully set up a 
Navigator and K3 to decode RTTY from VFO B on channel 2.

73,
Frank
K6FW
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Re: [Elecraft] sub receiver

[Rick Bates]

Wayne, as usual, gave a concise answer.  

If you DX, it's a great tool to add BUT: you want to consider a P3 if you
don't already have one.  It's difficult to say which is better if you have a
limited budget and depends on if you're audible or visual oriented.

A sub-receiver for planning your DX 'attack' is very valuable.  With the P3,
you can SEE the pattern the DX station is using (moving up the split or
what?).  You essentially can hear two frequencies at the same time (to know
when to call the DX) plus see what you're not hearing.

If you don't DX, the added 'tools' may have little value.  If you use the JT
modes, a TCXO may be a valuable option.  If you simply ragchew, having the
P3 means you can nag your friends about their poor audio (it isn't too hard
to tell the KIY brands on the air, they don't have steep walls and tend to
be overdriven).

When you budget the second receiver, if you EVER plan on using diversity
reception, the filters should be the same in both receivers.  That adds a
bit more expense.

And since you have to take a few things out to install the second receiver
including the front panel (to be put back in of course), you might consider
what other options could be added at the same time.  It's only money ;o)

Best of luck,
Rick wa6nhc


-Original Message-
From: Alan Grant

I am a very happy owner of a K3 (whole system) but I did not order the sub
receiver, what am I missing out on

VK4KO

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Re: [Elecraft] sub receiver

[Jim Brown]

On 10/30/2013 11:17 PM, Rick Bates wrote:

If you DX, it's a great tool to add BUT: you want to consider a P3 if you
don't already have one.


Strongly agree. I've got P3s for both rigs in my SO2R setup, and take 
them to FD and CQP expeditions, and both rigs in my SO2R setup have the 
SubRX. The second RX is VERY nice to have, for the reasons Wayne noted, 
but if dollars were limited, I'd lean strongly to the P3 as the FIRST 
way to spend them. Why? Because the P3 gives you a view of empty bands 
(6M, 10M), of pileups, and of RFI sources. All those applications for 
the 2nd RX that Wayne noted are also quite useful if you need them.


The P3 tells you more about the pileup than the SubRx and how might 
interact with it, and it does the empty band and RFI thing, but it 
doesn't do diversity.  I have Beverages, and I find them useful from 160 
to at least as high as 20M. You can assign them to the main RX which can 
help with weak signals, but you need the 2nd RX to do diversity, which 
can help even more. Diversity is most useful on 40-160.


73, Jim K9YC
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Re: [Elecraft] sub receiver

[Fred Smith]

There have been many very good answers the main reason I switched to the
K3's from the Yaesu FTDX-5000MP's a bit better main receiver on  the Yaesu
at that. The reason the second receiver same as the first with the same
amount of filters if wanted. Not second rated ones like all the others top
of the line radios costing up to $14-15,000 and can't keep up with the K3's
second receiver. With it you know you're getting the same signal with it as
the main not so in the TS-990 or the first, Yaesu's 9000's or Icom's 7800.

It's a huge asset to the radio and along with a P3 a must for DX'ing once
you have a good one your pretty well hooked for life


73,
Fred/N0AZZ
K3 Ser # 6730--KX3 # 5210--K2/100 # 6470-KAT100
P3/SVGA--KAT500--W2
Amps Elecraft KPA500 HF/6m--Alpha 9500 HF--Mirage B-5030-G 300+w--(2)
B-5016-G's 165w 2m




-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Alan Grant
Sent: Wednesday, October 30, 2013 10:23 PM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] sub receiver

I am a very happy owner of a K3 (whole system) but I did not order the sub
receiver, what am I missing out on

VK4KO

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No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.3426 / Virus Database: 3222/6796 - Release Date: 10/31/13

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Re: [Elecraft] sub receiver

[Keith Heimbold]

I have a K3 with a second receiver that I use rarely but I enjoy having it for 
DX pileups that work split. It has saved me buckets of time getting through the 
pileups. I also plan to use it this winter for receive antennas for the lower 
bands. However since I am into 6m I find having a visual tool of the band 
invaluable. I could probably live without the second receiver but I don't think 
I could live without the ability to see the band and short openings that are 
occurring on 6m. 

Keith
AK6ZZ

Sent from my iPhone please excuse typos

 On Oct 30, 2013, at 8:23 PM, Alan Grant asgr...@aapt.net.au wrote:
 
 I am a very happy owner of a K3 (whole system) but I did not order the sub
 receiver, what am I missing out on
 
 VK4KO
 
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[Elecraft] sub receiver

[Alan Grant]

I am a very happy owner of a K3 (whole system) but I did not order the sub
receiver, what am I missing out on

VK4KO

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Re: [Elecraft] sub receiver

[Scott Manthe]

Your question assumes that we know how you operate and what you want out 
of your station. There is no way we can know this. Think about how you 
operate and what you could do with a second receiver and then decide if 
you need or want one.


If you don't know why you might need or want a sub receiver, you 
probably don't need one.


73,
Scott, N9AA


On 10/30/13 11:23 PM, Alan Grant wrote:

I am a very happy owner of a K3 (whole system) but I did not order the sub
receiver, what am I missing out on

VK4KO




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Re: [Elecraft] sub receiver

[Wayne Burdick]

Hi Alan,

The sub receiver has a few primary uses:

- Monitoring one frequency (even on a different band) while operating on 
another. You might be waiting for a sked or a band opening, or waiting for a 
chance to call one station while tuning around looking for others. Very useful 
for hunt 'n' pounce operation, field day, etc.

- Listening to a DX station with one receiver while listening to a pileup 
calling him in the other. This allows you to search for a clear spot to call 
(or find the place where he's listening, by listening to other callers) without 
missing any of the DX station's transmissions. This works in either SPLIT or 
non-SPLIT mode. Without the sub receiver, this would typically be done by using 
SPLIT and the REV switch to periodically search for a transmit frequency. But 
with the sub, you can park VFO B on the DX station and use VFO A for transmit 
-- i.e., no need to use SPLIT.

- Diversity receive, where main and sub are locked together on the same 
frequency but they use two different antennas. If the sub's antenna is 
polarized somewhat differently from the main receiver's antenna, stations 
subject to fading (QSB) will tend to become louder in one receiver even when 
fading in the other. This is especially valued by low-band DXers, who have to 
play every trick in the book to copy weak stations.

The sub can have a different band, mode, and filter settings from main.

73,
Wayne
N6KR


On Oct 30, 2013, at 8:23 PM, Alan Grant asgr...@aapt.net.au wrote:

 I am a very happy owner of a K3 (whole system) but I did not order the sub
 receiver, what am I missing out on
 
 VK4KO


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[Elecraft] Sub receiver set up

[w8zn54]

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[Elecraft] Sub Receiver Band Independence?

[Ken Pyke]

Hi, the bottom right of page 37 says hold BSET, then tap BAND to select the 
SUB receiver's band.  Why can't I get that to work? Ken VE3YK Lake of Bays 
Ontario.
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Re: [Elecraft] Sub Receiver Band Independence?

[Mike Cox]

in MENU set VFO IND to no

On 8/11/2012 13:14 PM, Ken Pyke wrote:
 Hi, the bottom right of page 37 says hold BSET, then tap BAND to select the 
 SUB receiver's band.  Why can't I get that to work? Ken VE3YK Lake of Bays 
 Ontario.
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Re: [Elecraft] Sub Receiver Band Independence?

[Mike Cox]

More correctly, in CONFIG, set VFO IND to yes.. typed too fast...

Mike

On 8/11/2012 13:39 PM, Mike Cox wrote:
 in MENU set VFO IND to no

 On 8/11/2012 13:14 PM, Ken Pyke wrote:
 Hi, the bottom right of page 37 says hold BSET, then tap BAND to select the 
 SUB receiver's band.  Why can't I get that to work? Ken VE3YK Lake of Bays 
 Ontario.
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[Elecraft] Sub-Receiver

[Larry Boekeloo]

Hello Group  I am getting ready to add some items to my K3; ATU, couple of 
filters and the general coverage receive option.  I am looking at adding the 
sub-receiver too.  Is that as daunting as it looks?

Thanks.

Larry, KN8N

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Re: [Elecraft] Sub-Receiver

[Jim Brown]

On 5/11/2012 9:42 AM, Larry Boekeloo wrote:
 I am looking at adding the sub-receiver too.  Is that as daunting as it looks?

It's a bit of a shoe-horn job to cram the sub-RX into the chassis once 
you've got it built, but otherwise no big deal. It's not bad enough to 
avoid doing, but enough of a PITA that you'd like to avoid taking it out 
and putting it back in. :)  For that reason, I STRONGLY suggest that you 
buy and install whatever options (including filters) that you think 
you're going to want at the same time you're adding the sub-RX.

73, Jim K9YC
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Re: [Elecraft] Sub-Receiver

[Arie Kleingeld PA3A]

Larry,

Cannot do without the sub Rx. Definitely worth it!

It is quite easy to build it into the K3. See this: 
http://www.youtube.com/watch?v=5EJL8SlJ_L8

73,
Arie PA3A

Op 11-5-2012 18:42, Larry Boekeloo schreef:
 Hello Group  I am getting ready to add some items to my K3; ATU, couple 
 of filters and the general coverage receive option.  I am looking at adding 
 the sub-receiver too.  Is that as daunting as it looks?

 Thanks.

 Larry, KN8N

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Re: [Elecraft] Sub-Receiver

[W0MU Mike Fatchett]

Adding the sub receiver is not that bad.  Just take your time.

Mike W0MU

W0MU-1 CC Cluster w0mu.net


On 5/11/2012 12:13 PM, Arie Kleingeld PA3A wrote:
 Larry,

 Cannot do without the sub Rx. Definitely worth it!

 It is quite easy to build it into the K3. See this:
 http://www.youtube.com/watch?v=5EJL8SlJ_L8

 73,
 Arie PA3A

 Op 11-5-2012 18:42, Larry Boekeloo schreef:
 Hello Group  I am getting ready to add some items to my K3; ATU, couple 
 of filters and the general coverage receive option.  I am looking at adding 
 the sub-receiver too.  Is that as daunting as it looks?

 Thanks.

 Larry, KN8N

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Re: [Elecraft] Sub-Receiver

[Dave]

One word of caution with sub receiver. 
Take your time and be careful with back of sub receiver near the IO board. 
There are a couple of surface mounted caps on the IO board and you can damage 
them if you are not careful. 

73
Dave
wo2x


Sent from my iPhone

On May 11, 2012, at 2:47 PM, W0MU Mike Fatchett w...@w0mu.com wrote:

 Adding the sub receiver is not that bad.  Just take your time.
 
 Mike W0MU
 
 W0MU-1 CC Cluster w0mu.net
 
 
 On 5/11/2012 12:13 PM, Arie Kleingeld PA3A wrote:
 Larry,
 
 Cannot do without the sub Rx. Definitely worth it!
 
 It is quite easy to build it into the K3. See this:
 http://www.youtube.com/watch?v=5EJL8SlJ_L8
 
 73,
 Arie PA3A
 
 Op 11-5-2012 18:42, Larry Boekeloo schreef:
 Hello Group  I am getting ready to add some items to my K3; ATU, couple 
 of filters and the general coverage receive option.  I am looking at adding 
 the sub-receiver too.  Is that as daunting as it looks?
 
 Thanks.
 
 Larry, KN8N
 
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Re: [Elecraft] Sub-Receiver

[Joe Subich, W4TV]

Installing the sub receiver is much easier if you remove the left
side panel (as long as you do not also have the 2M transverter).
With the left side off it is much easier to maneuver and line up
the sub RX. It certainly allows you to see all the connections,
etc.

73,

... Joe, W4TV


On 5/11/2012 3:06 PM, Dave wrote:
 One word of caution with sub receiver.
 Take your time and be careful with back of sub receiver near the IO board. 
 There are a couple of surface mounted caps on the IO board and you can damage 
 them if you are not careful.

 73
 Dave
 wo2x


 Sent from my iPhone

 On May 11, 2012, at 2:47 PM, W0MU Mike Fatchettw...@w0mu.com  wrote:

 Adding the sub receiver is not that bad.  Just take your time.

 Mike W0MU

 W0MU-1 CC Cluster w0mu.net


 On 5/11/2012 12:13 PM, Arie Kleingeld PA3A wrote:
 Larry,

 Cannot do without the sub Rx. Definitely worth it!

 It is quite easy to build it into the K3. See this:
 http://www.youtube.com/watch?v=5EJL8SlJ_L8

 73,
 Arie PA3A

 Op 11-5-2012 18:42, Larry Boekeloo schreef:
 Hello Group  I am getting ready to add some items to my K3; ATU, 
 couple of filters and the general coverage receive option.  I am looking 
 at adding the sub-receiver too.  Is that as daunting as it looks?

 Thanks.

 Larry, KN8N

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Re: [Elecraft] Sub-Receiver

[Phil LaMarche]

Got everything working again.  I took the K3 serial cable off the P3 and
went to the computer direct.  Held in the Power switch for 10 seconds while
applying 12 V and then I was able to down load the new S/W.  ??? why because
I updated prior to this and all worked through the P3. I'm not technical and
have to learn everything the hard way. Always grateful for any help given.
Thanks Lu.

Phil

Philip LaMarche

 
727-944-3226
727-510-5038 Cell 
 www.w9dvm.com
WWW.FLAMGROUP.COM

K3 # 1605
KPA500 # 029
P3 #1480

 CCA 98-00827
CRA 1701
W9DVM
 


-Original Message-
From: Joe Subich, W4TV [mailto:li...@subich.com] 
Sent: Friday, May 11, 2012 3:57 PM
To: Phil LaMarche
Subject: Re: [Elecraft] Sub-Receiver


Dick and others have pointed you to the help file in the K3 Utility.  See
particularly the section Forcing the K3 into Firmware Load Required mode.

If you do not receive the K3 boot loader is ready message after pressing
Test Communications in the K3 Utility, follow the USB to Serial Adapter
Troubleshooting section to find out why you can not communicate with the K3.

73,

... Joe, W4TV


On 5/11/2012 3:34 PM, Phil LaMarche wrote:
 Joe, Can you help me get the radio to turn on again?

 Attempted to download new S/W version and the utility wouldn't connect 
 to K3. Kept rotating through the baud rates.  No way to stop it.
 Tried to turn off but only MCU LD showed in the window. Removed the 13 
 volts and then turned back on and the MCU LD is greyed in the window 
 and the TX Red Light is flashing.  Frozen.  Any help on what to do next?



 Phil

 Philip LaMarche


 727-944-3226
 727-510-5038 Cell
   www.w9dvm.com
 WWW.FLAMGROUP.COM

 K3 # 1605
 KPA500 # 029
 P3 #1480

   CCA 98-00827
 CRA 1701
 W9DVM






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Re: [Elecraft] Sub-Receiver

[hawley, charles j jr]

I thought it would be a pain to take out and in, but it's just time. No real 
issue. You also have to take it out for the main receiver filters, so you might 
want to fill that up to what you will want.

Chuck, KE9UW
aka Jack, BMW Motorcycles BMWMOA #224


From: elecraft-boun...@mailman.qth.net [elecraft-boun...@mailman.qth.net] on 
behalf of Jim Brown [j...@audiosystemsgroup.com]
Sent: Friday, May 11, 2012 12:20 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Sub-Receiver

On 5/11/2012 9:42 AM, Larry Boekeloo wrote:
 I am looking at adding the sub-receiver too.  Is that as daunting as it looks?

It's a bit of a shoe-horn job to cram the sub-RX into the chassis once
you've got it built, but otherwise no big deal. It's not bad enough to
avoid doing, but enough of a PITA that you'd like to avoid taking it out
and putting it back in. :)  For that reason, I STRONGLY suggest that you
buy and install whatever options (including filters) that you think
you're going to want at the same time you're adding the sub-RX.

73, Jim K9YC
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[Elecraft] Sub-Receiver sold...FS roofing filters

[Steve]

Greetings from Snowy Michigan,  I want to thank 
all of those who inquired about my
KRX3 Sub-receiver.  It was sold after I stripped 3 
of the roofing filters from the unit.
I now have 4-8 pole roofing filters for sale.  
Asking $125.00 each shipped to your qth
at my expense and insured for the full amount
Filters available are:  KFL3B-13kc FM filter,  
KFL3A-6kc AM, KFL3A-2.1kc and the KFL-3A
1.8kc.
Tnx es VY73'
Steve W8CRH
SEMPER FI
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Re: [Elecraft] sub receiver

[n5ge]

You're gonna love it!

Tom, N5GE licensed 1976 as WN5QGE

The marvel of all history is the patience with which men and women
submit to burdens unnecessarily laid upon them by their governments.
George Washington.

On Thu, 9 Feb 2012 11:40:02 -0600, k...@att.net wrote:

I've had my ticket since 1974 (WN4IKG)  I have owned over 25 rigs but never 
had one with two receivers. I 've always worked split with two VFOs but after 
a few emails from you guys and thinking about it (brain taxing) I can see 
where the second receiver would be useful. When I was working the HK0NA group, 
I just transmitted where they said they were listening but they had about a 10 
kHz spread so it was a guess whether they would hear me or not. It would be 
nice to know exactly where they are listening.  Thanks for the advice.  Love 
the reflector.  
Shipped my K2 off this morning and sold my IC 7000 last weekend. I am sans rig 
until this afternoon when UPS comes!
I haven't been without a rig in I don't know how long!  Its lonely.

John KE4D


My K3/100 kit arrives tomorrow. I did not order the sub receiver. I have
only a vertical here and have some antenna restrictions (height) I use a
SteppIR BigIR and it works great for me with my height restriction. So,
unless one of you can explain to me why I should have the sub receiver with
only one antenna, I'm leaving it the with one! I'm sure I don't understand
receiver diversity since I never heard of it until recently. Guide me!

John KE4D
K3 SN 
[snip]

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Re: [Elecraft] sub receiver

[KQ8M]

I was licensed also in 1974 (WN8JSQ) and the K3 was my first new rig. I have
never had a radio with 2 receivers till I got the K3. I first had the
experience, though, with dual receiver radios at the contest station of
K8AZ. I just had to have one. I wear headphones, so I have the DX in my left
ear and transmit freq in my right. Oh what heaven it is. I can find the DX's
listening Freq. so much faster and easier.

Tim Herrick, KQ8M, ex WB8JSQ, WN8JSQ
North Coast Contesters
k...@kq8m.com

K3 Serial #5934


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of n...@n5ge.com
Sent: Friday, February 10, 2012 12:21 PM
To: k...@att.net
Cc: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] sub receiver


You're gonna love it!

Tom, N5GE licensed 1976 as WN5QGE

The marvel of all history is the patience with which men and women
submit to burdens unnecessarily laid upon them by their governments.
George Washington.

On Thu, 9 Feb 2012 11:40:02 -0600, k...@att.net wrote:

I've had my ticket since 1974 (WN4IKG)  I have owned over 25 rigs but never
had one with two receivers. I 've always worked split with two VFOs but
after a few emails from you guys and thinking about it (brain taxing) I can
see where the second receiver would be useful. When I was working the HK0NA
group, I just transmitted where they said they were listening but they had
about a 10 kHz spread so it was a guess whether they would hear me or not.
It would be nice to know exactly where they are listening.  Thanks for the
advice.  Love the reflector.  
Shipped my K2 off this morning and sold my IC 7000 last weekend. I am sans
rig until this afternoon when UPS comes!
I haven't been without a rig in I don't know how long!  Its lonely.

John KE4D


My K3/100 kit arrives tomorrow. I did not order the sub receiver. I have
only a vertical here and have some antenna restrictions (height) I use a
SteppIR BigIR and it works great for me with my height restriction. So,
unless one of you can explain to me why I should have the sub receiver with
only one antenna, I'm leaving it the with one! I'm sure I don't understand
receiver diversity since I never heard of it until recently. Guide me!

John KE4D
K3 SN 
[snip]

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Re: [Elecraft] Sub receiver

[drewko]

Undoubtedly the sub-rcvr is a lot more convenient for this purpose,
but you can follow the split action pretty well using dual VFO and REV
button on a single receiver. With a little practice you can spin the
VFO with your thumb while momentarily depressing the REV button with
the middle or index finger. 

On CW if you have a good ear for pitch it is pretty easy to track the
stations that the DX is working and repeatedly set your transmit
frequency to where he is moving. LOCK your VFOA so you don't detune it
in the heat of the pursuit. Also, keep your VFOB filter wide open so
you can hear a good swath of the pileup at once. This is a lot of fun.

73,
Drew
AF2Z

. 

On Wed, 08 Feb 2012 21:03:41 -0600, you wrote:


Ok guys, I get it. I've always worked split with dual vfos but I see the 
advantage of the ability to hear the other guys instead of shooting blind and 
hoping the dx staion picks me up. 
If you don't have something, you don't know you need it!  I'll put the sub 
receiver on the buy list. 
(should have asked more for my K2)

John ke4d
Sent from my iPad

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[Elecraft] sub receiver

[ke4d]

I've had my ticket since 1974 (WN4IKG)  I have owned over 25 rigs but never had 
one with two receivers. I 've always worked split with two VFOs but after a few 
emails from you guys and thinking about it (brain taxing) I can see where the 
second receiver would be useful. When I was working the HK0NA group, I just 
transmitted where they said they were listening but they had about a 10 kHz 
spread so it was a guess whether they would hear me or not. It would be nice to 
know exactly where they are listening.  Thanks for the advice.  Love the 
reflector.  
Shipped my K2 off this morning and sold my IC 7000 last weekend. I am sans rig 
until this afternoon when UPS comes!
I haven't been without a rig in I don't know how long!  Its lonely.

John KE4D


My K3/100 kit arrives tomorrow. I did not order the sub receiver. I have
only a vertical here and have some antenna restrictions (height) I use a
SteppIR BigIR and it works great for me with my height restriction. So,
unless one of you can explain to me why I should have the sub receiver with
only one antenna, I'm leaving it the with one! I'm sure I don't understand
receiver diversity since I never heard of it until recently. Guide me!

John KE4D
K3 SN 
Libby and John 
www.TheRollingHome.com
Ft Clark Springs, Brackettville, TX

No trees were harmed in the sending of this e-mail; however, many electrons 
were inconvenienced
 
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[Elecraft] sub receiver and Elecraft cheerleaders.

[ke4d]

You probably have noticed, there are a lot of Elecraft missionaries lurking
in the weeds here.

73 Joe K2UF

I'm one of them. I have built and operated a K1 and two K2s and I'm really 
looking forward to the K3.  
Oh yeah, I also have a KPA500.

John KE4D
 
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Re: [Elecraft] sub receiver

[Roger D Johnson]

Back in the days when I had a TS-940 I made a very handy mod. Since I used a 
headset
and didn't need the up/dwn connections on the microphone jack, I brought out 
the 
REV
and A/B VFO lines. I had a small minibox with three nice big pushbuttons 
attached to a
three foot cord that was connected into the mic plug. With this setup I could 
sit back and
use the PTT button to key the tx on SSB, use the REV button to listen on the DX 
stations
rx freq or change VFOs with the A/B button. I think this could be done on the 
K3 
albeit
with a lot more work.

73, Roger


On 2/9/2012 12:40 PM, k...@att.net wrote:
 I've had my ticket since 1974 (WN4IKG)  I have owned over 25 rigs but never 
 had one with two receivers. I 've always worked split with two VFOs but after 
 a few emails from you guys and thinking about it (brain taxing) I can see 
 where the second receiver would be useful. When I was working the HK0NA 
 group, I just transmitted where they said they were listening but they had 
 about a 10 kHz spread so it was a guess whether they would hear me or not. It 
 would be nice to know exactly where they are listening.  Thanks for the 
 advice.  Love the reflector.
 Shipped my K2 off this morning and sold my IC 7000 last weekend. I am sans 
 rig until this afternoon when UPS comes!
 I haven't been without a rig in I don't know how long!  Its lonely.

 John KE4D




-- 
Remember the Liberty (AGTR-5)
http://www.usslibertyveterans.org/
http://www.gtr5.com/

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Re: [Elecraft] sub receiver

[Rick Prather]

John,

That's one of the great things about the K3.  If you decide later on a Sub 
Receiver would be nice you can always add it then.

Rick
K6LE

On 2/9/2012, at 9:40 , k...@att.net k...@att.net wrote:

 I've had my ticket since 1974 (WN4IKG)  I have owned over 25 rigs but never 
 had one with two receivers. I 've always worked split with two VFOs but after 
 a few emails from you guys and thinking about it (brain taxing) I can see 
 where the second receiver would be useful. When I was working the HK0NA 
 group, I just transmitted where they said they were listening but they had 
 about a 10 kHz spread so it was a guess whether they would hear me or not. It 
 would be nice to know exactly where they are listening.  Thanks for the 
 advice.  Love the reflector.  
 Shipped my K2 off this morning and sold my IC 7000 last weekend. I am sans 
 rig until this afternoon when UPS comes!
 I haven't been without a rig in I don't know how long!  Its lonely.
 
 John KE4D
 

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[Elecraft] Sub receiver

[John's email]

Ok guys, I get it. I've always worked split with dual vfos but I see the 
advantage of the ability to hear the other guys instead of shooting blind and 
hoping the dx staion picks me up. 
If you don't have something, you don't know you need it!  I'll put the sub 
receiver on the buy list. 
(should have asked more for my K2)

John ke4d
Sent from my iPad
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Re: [Elecraft] Sub receiver

[Joe K2UF]

You probably have noticed, there are a lot of Elecraft missionaries lurking
in the weeds here.

73  Joe K2UF

No trees were harmed in the sending of this e-mail; however, many electrons
were inconvenienced.


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of John's email
Sent: Wednesday, February 08, 2012 10:04 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Sub receiver


Ok guys, I get it. I've always worked split with dual vfos but I see the
advantage of the ability to hear the other guys instead of shooting blind
and hoping the dx staion picks me up. 
If you don't have something, you don't know you need it!  I'll put the sub
receiver on the buy list. 
(should have asked more for my K2)

John ke4d
Sent from my iPad
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[Elecraft] Sub-receiver

[Roger D Johnson]

When switching the sub-receiver ON does your VFO B frequency
display momentarily display J before the frequency comes up?

73, Roger

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Re: [Elecraft] Sub-receiver

[Rick Prather]

Roger,

I suspect what you are seeing is the description you set for your second 
antenna since the K3 quickly displays the second antenna when you turn on the 
SUB.

Rick
K6LE



On 4/15/2011, at 4:04 , Roger D Johnson wrote:

 When switching the sub-receiver ON does your VFO B frequency
 display momentarily display J before the frequency comes up?
 
 73, Roger
 
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[Elecraft] Sub Receiver

[Norman L Zinn]

How does one go about using the key pad to key-in a frequency to the Sub
Receiver?
I see nothing in the K3 Manual on this.
Norm
AAV5VW / KB8EEF

$12/Month Auto Insurance
Drivers in your area are paying as low as $12/m. Free Quote instantly.
http://thirdpartyoffers.juno.com/TGL3141/4c209dfb8e510d5bc4m01vuc
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Re: [Elecraft] Sub Receiver

[Rick Prather]

Norm,

There may be better ways but what I do is use the A/B button, set the frequency 
and then A/B back.

Rick
K6LE

On 6/22/2010, at 4:25 , Norman L Zinn wrote:

 How does one go about using the key pad to key-in a frequency to the Sub
 Receiver?
 I see nothing in the K3 Manual on this.
 Norm
 AAV5VW / KB8EEF

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Re: [Elecraft] sub receiver question... 3db loss w/ 2 rcvrs

[Bill NY9H]

I heard an ICOM employee explain that the 7700 was better than the 
7800 because the 7700 did not have the 3db loss ... because it only 
had one receiver in the 7700 !   wow ..that must make it a 
contest set .

i certainly don't mind the split loss in the 7800 or the k3..

I had installed one in my 756pro3 so i could have a real 2nd receiver.
and actually use a minicircuits in the K3  IF out so I can feed both 
my  LP-PAn  the SDR/IQ...
I like rocky on the LPpan


bill

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Re: [Elecraft] sub receiver question... 3db loss w/ 2 rcvrs

[Ross Primrose]

Bill NY9H wrote:
 I heard an ICOM employee explain that the 7700 was better than the 
 7800 because the 7700 did not have the 3db loss ... because it only 
 had one receiver in the 7700 !   wow ..that must make it a 
 contest set .

 i certainly don't mind the split loss in the 7800 or the k3..
 lease help support this email list: http://www.qsl.net/donate.html
   
The 3dB loss is meaningless. All modern receivers have way more 
sensitivity than they need

73, Ross N4RP

-- 
FCC Section 97.313(a) “At all times, an amateur station must use the minimum 
transmitter power necessary to carry out the desired communications.”

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Re: [Elecraft] sub receiver question

[Mike Harris]

G'day,

A contrary opinion, yes it is noticeable, particularly when trying 
to work signals near the noise.  I usually have to crack where the 
callers are going through and then toggle the sub-RX off to make 
sure I have good copy on the target.  In some circumstances I still 
find that using REV is the better option.  Naturally if the target 
is head and shoulders above the noise, no problem, and the sub-RX 
sure makes working split a treat.

Regards,

Mike VP8NO
K2 #1400
K3 #345

- Original Message - 
From: Jim Danehy jdan...@cinci.rr.com
To: Elecraft Reflector elecraft@mailman.qth.net
Sent: Friday, October 16, 2009 8:12 PM
Subject: [Elecraft] sub receiver question


I own K3 # 3355. Love it. Only thing I do not have is the digital 
recorder and the sub receiver. I am considering the sub receiver. I 
read in the operating manual that there is a -3 db loss when both 
receivers are using the splitter (common antenna). Is that 
interpretation correct ? I would probably not be using two antennas 
except on 160 and 80 which I operate sparingly in the winter. If I 
use the sub receiver and the main receiver from the same antenna 
can you notice the -3 db loss ? As we know that is a halving of the 
signal. One db is the lowest difference your ear can detect.

 Jim W9VNE
 K2  K3 owner

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[Elecraft] sub receiver question

[Jim Danehy]

I own K3 # 3355. Love it. Only thing I do not have is the digital recorder and 
the sub receiver. I am considering the sub receiver. I read in the operating 
manual that there is a -3 db loss when both receivers are using the splitter 
(common antenna). Is that interpretation correct ? I would probably not be 
using two antennas except on 160 and 80 which I operate sparingly in the 
winter. If I use the sub receiver and the main receiver from the same antenna 
can you notice the -3 db loss ? As we know that is a halving of the signal. One 
db is the lowest difference your ear can detect. 

Jim W9VNE
K2  K3 owner
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Re: [Elecraft] sub receiver question

[Bill W4ZV]

jim danehy wrote:
 
 I own K3 # 3355. Love it. Only thing I do not have is the digital recorder
 and the sub receiver. I am considering the sub receiver. I read in the
 operating manual that there is a -3 db loss when both receivers are using
 the splitter (common antenna). Is that interpretation correct ? I would
 probably not be using two antennas except on 160 and 80 which I operate
 sparingly in the winter. If I use the sub receiver and the main receiver
 from the same antenna can you notice the -3 db loss ? As we know that is a
 halving of the signal. One db is the lowest difference your ear can
 detect.
 

Yes there's a 3 dB loss because the signal is split into two.  On the low
bands, you will never notice a 3 dB loss because the ambient noise is so far
above the K3's sensitivity.

73,  Bill

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View this message in context: 
http://n2.nabble.com/sub-receiver-question-tp3838936p3838954.html
Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] sub receiver question

[Dick Dievendorff]

Jim: I don't even notice it. The noise is similarly halved, so I just  
turn the gain to a comfortable level. The loss is that half the  
signal is going to each receiver.

Others can explain it more technically, but I don't notice this loss

Dick, K6KR


Sent from my iPhone

On Oct 16, 2009, at 4:12 PM, Jim Danehy jdan...@cinci.rr.com wrote:

 I own K3 # 3355. Love it. Only thing I do not have is the digital  
 recorder and the sub receiver. I am considering the sub receiver. I  
 read in the operating manual that there is a -3 db loss when both  
 receivers are using the splitter (common antenna). Is that  
 interpretation correct ? I would probably not be using two antennas  
 except on 160 and 80 which I operate sparingly in the winter. If I  
 use the sub receiver and the main receiver from the same antenna can  
 you notice the -3 db loss ? As we know that is a halving of the  
 signal. One db is the lowest difference your ear can detect.

 Jim W9VNE
 K2  K3 owner
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Re: [Elecraft] sub receiver question

[Wayne Burdick]

Jim Danehy wrote:

 I own K3 # 3355. Love it. Only thing I do not have is the digital  
 recorder and the sub receiver. I am considering the sub receiver. I  
 read in the operating manual that there is a -3 db loss when both  
 receivers are using the splitter (common antenna). Is that  
 interpretation correct ? I would probably not be using two antennas  
 except on 160 and 80 which I operate sparingly in the winter. If I  
 use the sub receiver and the main receiver from the same antenna can  
 you notice the -3 db loss ? As we know that is a halving of the  
 signal. One db is the lowest difference your ear can detect.

Hi Jim,

This is correct. Virtually all true dual-receive implementations use a  
3-dB splitter to route the signal to both receivers while preserving  
impedance match.

Most of the time you won't notice the 3 dB loss. It would only come  
into play on a band where both the noise and signals are extremely  
weak, and if it's an issue, you can turn the sub receiver off or use a  
separate antenna.

You'll want a separate antenna anyway so you can use diversity  
receive, which works amazingly well in fading conditions. 160 and 80  
meter operators in particular use this technique.

I'd suggest matching the crystal filters on the main and sub  
receivers, at least those you might be using for diversity receive.

73,
Wayne
N6KR

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Re: [Elecraft] sub receiver question

[Radio Amateur N5GE]

On Fri, 16 Oct 2009 16:17:18 -0700 (PDT), Bill W4ZV
btipp...@alum.mit.edu wrote:




jim danehy wrote:
 
 I own K3 # 3355. Love it. Only thing I do not have is the digital recorder
 and the sub receiver. I am considering the sub receiver. I read in the
 operating manual that there is a -3 db loss when both receivers are using
 the splitter (common antenna). Is that interpretation correct ? I would
 probably not be using two antennas except on 160 and 80 which I operate
 sparingly in the winter. If I use the sub receiver and the main receiver
 from the same antenna can you notice the -3 db loss ? As we know that is a
 halving of the signal. One db is the lowest difference your ear can
 detect.
 

Yes there's a 3 dB loss because the signal is split into two.  On the low
bands, you will never notice a 3 dB loss because the ambient noise is so far
above the K3's sensitivity.

73,  Bill

Bill is correct about probably not noticing the difference, but if it
bothers you, you have the option of turning each receiver's preamp on.

73,

Tom, N5GE

n...@n5ge.com
K3 #806, K3 #1055, PR6,
XV144, XV432, KRC2,
W1 and other small kits.

2 W2's on order
1 K144XV on order

http://www.n5ge.com
http://www.swotrc.net

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Re: [Elecraft] sub receiver question

[paulb]

3dB accross the combiner using both recievers,  for low band use not an
issue.

The digi audio recorder is great. On air play-back is excellent.

cheers

Paul
zl1ajy




I own K3 # 3355. Love it. Only thing I do not have is the digital recorder
and the sub receiver. I am considering the sub receiver. I read in the
operating manual that there is a -3 db loss when both receivers are using
the splitter (common antenna). Is that interpretation correct ? I would
probably not be using two antennas except on 160 and 80 which I operate
sparingly in the winter. If I use the sub re
-- 
View this message in context: 
http://n2.nabble.com/sub-receiver-question-tp3838936p3839265.html
Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] Sub receiver crosstalk

[Ron D'Eau Claire]

Brett wrote:

Ok so I just found a problem when digging around in the radio.  Looks
like the screw in the top of the KAT3 board wasn't replaced.  Putting
that screw back in makes the radio show the signal at S1.  

--

Good eyes! That's a real easy one to forget since it's nearly hidden under
the lip on the rear panel. 

You're not the first to have strange problems caused by a poor ground at the
KAT3 because that screw is missing. 

Because of the work I do I've had my K3 apart - literally from a
fully-assembled rig to a kit of parts again and everything in between - more
times that I can possibly count. 

I have some small containers in which I put the hardware when disassembling.
If I'm disassembling parts that include critical but close screw sizes -
such as the front panel bezels - I use more than one container. I always
start with *empty* containers. 

When the radio is back together, I check to be sure the containers are
empty. If not, I go hunting for where I left out a screw or a washer.

Ron AC7AC


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[Elecraft] Sub receiver crosstalk

[Brett Howard]

Just to be sure...

I've got a 50uV signal being injected into ANT1 of the KAT3 and a dummy
load connected to ANT2.  I hear the signal on the main RX at S9 and
heard the signal on the SubRX (listening to the dummy load) at about
S2.5 (the third light is flickering).  I'm not really able to affect
this level by moving internal TMP cables or external cables.  There is
no cable between the signal generator and the ANT1 connector.  Is this
common?

Ok so I just found a problem when digging around in the radio.  Looks
like the screw in the top of the KAT3 board wasn't replaced.  Putting
that screw back in makes the radio show the signal at S1.  

I should note that there seems to be a strange bug in the software for
me.  If I hold BSET to go back to the mainRX.  Then hold it again to go
back to the SubRX the signal still shows S9...  I have to switch to ANT1
and then back to ANT2 in order to get the correct S-meter reading.  Is
this something anyone else can reproduce?  I'm running 3.19...

~Brett

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[Elecraft] Sub Receiver jones...

[Jim Miller]

Listening to K5D last night made it obvious to me (I'm slow...) the
benefit of a sub-receiver. The exchanges that occur by the pursuers
are impossible to find by switching back and forth between pursued and
pursuer frequencies. I'm assuming that the pursued will take the next
call somewhere near the last one, maybe a bad assumption.

Maybe next holiday season...

73

jim ab3cv
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Re: [Elecraft] Sub Receiver jones...

[w5ov]

Jim,

Being in split mode and pressing *AND HOLDING* the REV button allows you
to listen on the split frequency until you release the REV button. Us
old Kenwood guys got used to the T-F Set button for this function.
It's not as good as having a dual receiver, but you can develop the skill
required to use it almost as effectively.

73,

Bob W5OV

 Listening to K5D last night made it obvious to me (I'm slow...) the
 benefit of a sub-receiver. The exchanges that occur by the pursuers
 are impossible to find by switching back and forth between pursued and
 pursuer frequencies. I'm assuming that the pursued will take the next
 call somewhere near the last one, maybe a bad assumption.

 Maybe next holiday season...

 73

 jim ab3cv
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Re: [Elecraft] Sub Receiver jones...

[W0MU Mike Fatchett]

And for us Yaesu users it is a real pain in the but.  I am surprised that
the K3 would not be able to do dual in band receive or dual watch as some
would call it. 


A slip of the foot you may soon recover, but a slip of the tongue you may
never get over. Ben Franklin
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of w...@w5ov.com
Sent: Monday, February 16, 2009 10:46 AM
To: Jim Miller
Cc: Elecraft Reflector
Subject: Re: [Elecraft] Sub Receiver jones...

Jim,

Being in split mode and pressing *AND HOLDING* the REV button allows you to
listen on the split frequency until you release the REV button. Us old
Kenwood guys got used to the T-F Set button for this function.
It's not as good as having a dual receiver, but you can develop the skill
required to use it almost as effectively.

73,

Bob W5OV

 Listening to K5D last night made it obvious to me (I'm slow...) the 
 benefit of a sub-receiver. The exchanges that occur by the pursuers 
 are impossible to find by switching back and forth between pursued and 
 pursuer frequencies. I'm assuming that the pursued will take the next 
 call somewhere near the last one, maybe a bad assumption.

 Maybe next holiday season...

 73

 jim ab3cv
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Re: [Elecraft] Sub Receiver jones...

[Vic K2VCO]

Jim Miller wrote:
 Listening to K5D last night made it obvious to me (I'm slow...) the
 benefit of a sub-receiver. The exchanges that occur by the pursuers
 are impossible to find by switching back and forth between pursued and
 pursuer frequencies. I'm assuming that the pursued will take the next
 call somewhere near the last one, maybe a bad assumption.

Some DX operators (the ones I like) go through a pileup in one direction, 
moving up or 
down a discrete amount each time. Then they either 'snap back' to the other end 
of the 
pileup, or tune back the way they came. This is the best case, because if you 
are thinking 
you can predict where to call accurately -- and only a small percentage of 
callers are 
thinking!

Others hop around between two general areas. You can imagine them flipping back 
and forth 
each time. If you detect this, it can be helpful.

Some operators pretty much listen in one spot, plus or minus a few hundred Hz. 
for a long 
time. Pretty soon everyone learns where this is!

Sometimes a guy will just randomly pick someone to answer with no discernible 
pattern. 
This can be frustrating.

You really do need two receivers to spot the pattern. It can be hard when the 
DX is 
working stations that you can't hear.

I know that I have spent long periods in pileups without results until I get 
the pattern. 
Then -- blam, one shot.
-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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Re: [Elecraft] Sub Receiver jones...

[Lyle Johnson]

 ...I am surprised that
 the K3 would not be able to do dual in band receive or dual watch as some
 would call it. 

Early in the design process of the K3 we explored various methods by 
which we could obtain dual receive capability.  Such capability was a 
basic design requirement.

Putting in a default dual watch system means an additional mixer and 
synthesizer while providing limited flexibility.  A lower-performance 
second receiver would not stand up to the severe operating conditions in 
which we wanted the K3 to excel.  Either approach would add significant 
cost to the basic radio, requiring people who did not want such features 
to pay for them while denying a high-performance second receiver option 
to those who might want one.

In the end, we concluded the best approach was an independent, 
high-performance second receiver.  The KRX3 is the result.  It provides 
the same performance as the main receiver.  It enables diversity 
reception.  Users of the K3's diversity mode quickly realize its 
benefits when chasing weak signals.

And the price is shockingly low!

Disclaimer: I am *not* a disinterested person in this :-)

73,

Lyle KK7P
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Re: [Elecraft] Sub Receiver jones...

[Steven . Zabarnick]

Another solution is to get an LP-PAN panadapter. This gives a great
panadapter plus two PowerSDR receivers. This weekend I was able to monitor
K5D on the K3 and/or the primary PowerSDR receiver and listen to (and
watch) the pileup on the PowerSDR subreceiver. PowerSDR allows you to put
the pileup in one computer speaker and the DX in the other. Pretty cool!

I only wish that PowerSDR receiver un-muting after transmission was a
little faster. There is a little too much pause there.

Steve N9SZ

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Re: [Elecraft] Sub Receiver jones...

[Tom, N5GE]

On Mon, 16 Feb 2009 10:31:20 -0800, you wrote:

Below...

Jim Miller wrote:
 Listening to K5D last night made it obvious to me (I'm slow...) the
 benefit of a sub-receiver. The exchanges that occur by the pursuers
 are impossible to find by switching back and forth between pursued and
 pursuer frequencies. I'm assuming that the pursued will take the next
 call somewhere near the last one, maybe a bad assumption.

Some DX operators (the ones I like) go through a pileup in one direction, 
moving up or 
down a discrete amount each time. Then they either 'snap back' to the other 
end of the 
pileup, or tune back the way they came. This is the best case, because if you 
are thinking 
you can predict where to call accurately -- and only a small percentage of 
callers are 
thinking!

Others hop around between two general areas. You can imagine them flipping 
back and forth 
each time. If you detect this, it can be helpful.

Some operators pretty much listen in one spot, plus or minus a few hundred Hz. 
for a long 
time. Pretty soon everyone learns where this is!

Sometimes a guy will just randomly pick someone to answer with no discernible 
pattern. 
This can be frustrating.

You really do need two receivers to spot the pattern. It can be hard when the 
DX is 
working stations that you can't hear.

I know that I have spent long periods in pileups without results until I get 
the pattern. 
Then -- blam, one shot.

Exactly!

73,

Tom, N5GE

K3 806
XV144
XV432

http://www.n5ge.com
http://www.swotrc.net

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[Elecraft] Sub-receiver or 2 k3's

[N1IX]

I was going to install the sub-receiver in my K3. 
Then I thought it might me advantageous to have a second K3 instead. 
I need a back up radio also. Are there any opinions?

Dave N1IX___
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Re: [Elecraft] Sub-receiver or 2 k3's

[Jerry Flanders]

A few weeks ago on this reflector I mentioned that I was using my two 
K3s for diversity. I have two full station setups (primarily for RTTY 
contesting), and one is connected to 80/20/10 antennas and the other 
to a 40/15. Also, each separate station feeds a different side 
earpiece in my headphones, so it was very easy for me to implement 
diversity just by linking the VFOs together through N8LP's LP-Bridge 
program. Even though the other K3 is on the wrong band antenna, 
it all works FB. I have not tried to link the master oscillators in 
the K3s, but I did carefully tweak the freq calibration so they are 
on the same freq (within tenths of a Hz, I think).

Since I already had the two radios here, it made sense for me to do 
diversity with them when the second radio was not busy, but maybe not 
so sensible to buy one solely for this.

Go back through the archives and search for my posts both here and 
also the LP-Pan reflector.

Jerry W4UK

At 18:17 1/25/2009, N1IX wrote:

I was going to install the sub-receiver in my K3.
Then I thought it might me advantageous to have a second K3 instead.
I need a back up radio also. Are there any opinions?

Dave N1IX

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Re: [Elecraft] Sub-receiver or 2 k3's

[WILLIS COOKE]

Two K3s would be better than one Dave, but would not give you the automatic 
muting you need for diversity receive and the benefits of two receivers.  With 
two K3s I think I would want one or both to have two receivers.  I am happy 
with one K3 and two receivers with a couple of Kenwoods for backup, but I would 
trade a well used TS 850 or a lightly used TS 440 for a second K3 without 
hesitation

Willis 'Cookie' Cooke 
K5EWJ


--- On Sun, 1/25/09, N1IX n...@verizon.net wrote:

 From: N1IX n...@verizon.net
 Subject: [Elecraft] Sub-receiver or 2 k3's
 To: elecraft@mailman.qth.net
 Date: Sunday, January 25, 2009, 10:17 AM
 I was going to install the sub-receiver in my K3. 
 Then I thought it might me advantageous to have a second K3
 instead. 
 I need a back up radio also. Are there any opinions?
 
 Dave N1IX___
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Re: [Elecraft] Sub-receiver or 2 k3's

[Ron D'Eau Claire]

Back in the 1950's the ultimate Ham rig include a kilowatt amplifier for
each band, often stacked in a cabinet on the desktop or in a rack alongside
the desk (we still had to adjust our transmitters when we QSY'd in those
days). Separate amps allowed one to optimize the circuits and have them
pre-set for each band.

Perhaps it's time to revisit that concept with a K3 for each band, or at
least a K3 for each mode, so all the presets, tweaks and adjustments can be
made in advance and one only need select which rig to use! 

Picture a stack of at least four K3's optimized for SSB, CW, Data, and FM or
a stack of 11 of them to provide one per band.  

My fantasy doesn't quite reach to one per band and one per mode, but what a
sight that would be...

Ron AC7AC

--- On Sun, 1/25/09, N1IX n...@verizon.net wrote:

 I was going to install the sub-receiver in my K3. 
 Then I thought it might me advantageous to have a second K3
 instead. 
 I need a back up radio also. Are there any opinions?
 
 Dave N1IX___
 Elecraft mailing list

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Re: [Elecraft] Sub-receiver or 2 k3's

[wayne burdick]

I have a dream

:)

Wayne

Ron D'Eau Claire wrote:

 Perhaps it's time to revisit that concept with a K3 for each band, or 
 at
 least a K3 for each mode...


---

http://www.elecraft.com

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[Elecraft] Sub Receiver thank you

[n8ws]

Thanks to all for the help, I knew it would be somthing simple and now I do
feel stupid cause it was so simple hi hi but the disp button is burned in my
memory bank so it wont happen again... THANK YOU THANK YOU THANK YOU 
=)

Bill N8WS
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[Elecraft] sub receiver

[n8ws]

I have lost my sub reciever and can not find the menu that I changed to make
that happen. can anyone tell me what I did wronG and help me get my sub
receiver back. what I see now in the B vfo is the time, date,  3 zero's,
13.4v, etc etc. 
Thanks in advance I know I am going to feel stupid after I find out what I
did wrong.

Bill N8WS:-(
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[Elecraft] Sub Receiver Filter Macros

[Tony Fegan VE3QF]

	I have been able to set filter macros on the main receiver but now wish 
set the sub receiver filter macros. I have the sub receiver on and 
linked (same frequency).


I can set the main receiver filter with the macro:
k31;is 0550;fw0040;
This works as expected (350-750 Hz).

I now execute the macro:
k31;is$ 2000;fw$0100; (hoping to get 1500-2500 Hz)
	I end up with the center frequency of the main receiver shifted to 2.0 
kHz and 1.0 kHz bandwidth set on the sub receiver. The is$ does not 
seem to work for the sub receiver. Is this correct? How should I set the 
sub receiver shift?
	I suppose I could set the (sub) filter in A, use the SW commands to 
transfer to B, and then set A again. It's a lot of shuffling but it 
may work.


	Any suggestions would be appreciated. I need this to simulate a 
Contour filter for SSB.


73
Tony VE3QF

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[Elecraft] Sub receiver on the way

[Mike Scott]

Katiegram received for second receiver ordered on Jun 7, 2008. We seem to be
advancing through the backlog.

 

Mike Scott

AE6WA Tarzana, CA

K3/100 SN508

 

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[Elecraft] Sub Receiver Question

[-.-. --.-N3TU -.-. --.-]

How do I get the sub receiver to receive? I can hear my main receiver on the
left speaker and static on the right receiver.  It sounds like I don't have
an antenna on the sub. I checked the sub receiver's frequency with the main
receiver and there is activity on the band. 
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Re: [Elecraft] Sub Receiver Question

[Iain MacDonnell - K6IAM]

-.-. --.-N3TU -.-. --.- wrote:

How do I get the sub receiver to receive? I can hear my main receiver on the
left speaker and static on the right receiver.  It sounds like I don't have
an antenna on the sub. I checked the sub receiver's frequency with the main
receiver and there is activity on the band. 


Have you selected the right antenna input for the sub-RX? Hold BSET,
then tap ANT. See page 37 of the owner's manual.

~Iain
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Re: SV: [Elecraft] SUB receiver

[W5UN]

Thanks to all for the input. It turned out to be a faulty stereo 
phone plug. All is working OK now


Dave, W5UN

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RE: SV: [Elecraft] SUB receiver

[Ron D'Eau Claire]

The procedure in the KRX3 manual will be reworked to clearly spell out the
need to do the KRX3 checkout procedure before connecting any external
devices to the K3, including speakers, phones, etc. 

That's why it says to set SPKRS to 1 so the internal speaker will provide
subreceiver audio. It assumes that no external audio devices are connected.
We'll be more specific about that. I'm sorry you had to spend the extra time
sweating over the KRX3 when the problem was a faulty phone plug. 

That's a good general rule to follow whenever making any changes in the K3
(or any rig). After making a mod,  operate it strictly stand-alone at first
to determine that it is working before hooking anything unnecessary to it
(power is needed and perhaps a dummy load if you're going to transmit as
part of the checkout). 

It's absolutely astonishing how a connector can become intermittent (or find
its way into the wrong jack) or how an external device can decide to stop
working just at the wrong time, Hi! 

Ron AC7AC


-Original Message-
Thanks to all for the input. It turned out to be a faulty stereo 
phone plug. All is working OK now




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[Elecraft] SUB receiver

[Dave Blaschke]

I got my K3 yesterday and am learning. But I have not figured out how 
to hear sound from the SUB receiver. Yes, KRX3 is installed. How does 
one activate audio out of the SUB rcvr?


Dave, W5UN

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Re: [Elecraft] SUB receiver

[Iain MacDonnell - K6IAM]

On 10/22/08 10:12 PM, Dave Blaschke wrote:


I got my K3 yesterday and am learning. But I have not figured out how to
hear sound from the SUB receiver. Yes, KRX3 is installed. How does one
activate audio out of the SUB rcvr?


Have you read page 37 of the owner's manual ??

~Iain

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[Elecraft] Sub receiver installation

[Mike Miller]

How difficult is it to install the sub receiver in the K3?

How much time does it take?
Considering taking delivery of K3 without the sub receiver installed..



Mike Miller KA5SMA
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RE: [Elecraft] Sub receiver installation

[Ed Muns]

 How difficult is it to install the sub receiver in the K3?

Depends on one's skill in such things.  Some people call it trivial and
others think it is a big deal.

 How much time does it take?

As reported on this reflector, experiences have ranged from 1.5 to 4 hours.
The instructions are excellent, but they have to be read and followed
diligently.

73,
Ed - W0YK

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