Date   

Re: T/R Switching

Todd K7TFC
 

Jim,

Here's a link to a QSK circuit that uses reed relays. You find find it'll suitt your purpose.


73,

Todd
------------------------------------------------------------------------------------
K7TFC / Medford, Oregon, USA / CN82ni / UTC-8
------------------------------------------------------------------------------------
QRP (CW & SSB) / EmComm / SOTA / Homebrew / Design


On Wed, Feb 13, 2013 at 7:29 PM, Nick-WA5BDU <nick-wa5bdu@...> wrote:
 

Good question.  I do a lot of fooling with different boatanchor matchups.  I built this RF sensing antenna switcher from Solid State Design for the Radio Amateur a few years ago that serves me well.  It has adjustable drop out, so it's semi-break-in.  But no provision for muting so I ride the AF & RF gains.

For little QRP RX and TX boards, I might just use an SPDT toggle switch to swap between TX and RX and maybe get those phones off my ears a bit before transmitting.

But like you said, you'd like to protect a more modern rig.  The old BAs were tough. With some kind of SPDT arrangement whether relay or toggle switch, you're never going to have the TX connected directly into the RX input.  Worst case, slow switching will have the TX deadheaded for a few ms but I don't know that you'd couple excess RF into the receiver doing that.  Maybe if you're on 80 or 40 you can afford to have the preamp off and even a bit of attenuation turned on for an extra measure of protection.  A bandaid fix for sure, I admit.  However, I have a K3 and if it senses excess RF into the receiver, it will start automatically taking such steps.

If your switch or relay had an extra pole, you could use it to ground the RX antenna input during transmit.  That still leaves you with that switching time vulnerability though.  The only thing I can think of for that is some kind of sequencer, like a microcontroller.  Or as others have said:

Something like the magic box would be the Cadillac solution, of course.

72-

Nick, WA5BDU


On 2/13/2013 10:06 AM, Jim, ND9M / VQ9JC wrote:
 

As a recent joiner of 4SQRP, I'm looking forward to getting back into building my own stuff. The NS-40 seems to be a popular and well designed rig, and my plan is to use my FT-857 for the RX side. Otherwise, the 857 is my day-to-day rig, and I have to protect it. (For QRP use, I drop the drive down and measure the output on an external wattmeter.)
 
So here's a newbie query from an old time ham (me!) who should know the answer but doesn't: What is everyone else who uses separate TX and RX units doing to mute their RXs when the TXs are doing their thing? A rule of thumb was given me a few days ago that there must be at least 40 dB attenuation to protect the RX front end, but that's also going to depend on what the TX power is to start with.
 
My old Hallicrafters RXs could handle a bit of a pop at QRP levels when I did manual switching. I'm a bit leery however about subjecting the "newfangled" 857 to similar treatment. I never had a Dow key which would've done nicely for the boat anchors, but - assuming I could put my hands on one - would a Dow key with its mechanical relay have fast enough response time to protect the 857's front end?
 
What other alternatives are currently in play?
 
Tks/73,
 
Jim, ND9M / VQ9JC





Re: T/R Switching

Nick-WA5BDU
 

Good question.  I do a lot of fooling with different boatanchor matchups.  I built this RF sensing antenna switcher from Solid State Design for the Radio Amateur a few years ago that serves me well.  It has adjustable drop out, so it's semi-break-in.  But no provision for muting so I ride the AF & RF gains.

For little QRP RX and TX boards, I might just use an SPDT toggle switch to swap between TX and RX and maybe get those phones off my ears a bit before transmitting.

But like you said, you'd like to protect a more modern rig.  The old BAs were tough. With some kind of SPDT arrangement whether relay or toggle switch, you're never going to have the TX connected directly into the RX input.  Worst case, slow switching will have the TX deadheaded for a few ms but I don't know that you'd couple excess RF into the receiver doing that.  Maybe if you're on 80 or 40 you can afford to have the preamp off and even a bit of attenuation turned on for an extra measure of protection.  A bandaid fix for sure, I admit.  However, I have a K3 and if it senses excess RF into the receiver, it will start automatically taking such steps.

If your switch or relay had an extra pole, you could use it to ground the RX antenna input during transmit.  That still leaves you with that switching time vulnerability though.  The only thing I can think of for that is some kind of sequencer, like a microcontroller.  Or as others have said:

Something like the magic box would be the Cadillac solution, of course.

72-

Nick, WA5BDU


On 2/13/2013 10:06 AM, Jim, ND9M / VQ9JC wrote:
 

As a recent joiner of 4SQRP, I'm looking forward to getting back into building my own stuff. The NS-40 seems to be a popular and well designed rig, and my plan is to use my FT-857 for the RX side. Otherwise, the 857 is my day-to-day rig, and I have to protect it. (For QRP use, I drop the drive down and measure the output on an external wattmeter.)
 
So here's a newbie query from an old time ham (me!) who should know the answer but doesn't: What is everyone else who uses separate TX and RX units doing to mute their RXs when the TXs are doing their thing? A rule of thumb was given me a few days ago that there must be at least 40 dB attenuation to protect the RX front end, but that's also going to depend on what the TX power is to start with.
 
My old Hallicrafters RXs could handle a bit of a pop at QRP levels when I did manual switching. I'm a bit leery however about subjecting the "newfangled" 857 to similar treatment. I never had a Dow key which would've done nicely for the boat anchors, but - assuming I could put my hands on one - would a Dow key with its mechanical relay have fast enough response time to protect the 857's front end?
 
What other alternatives are currently in play?
 
Tks/73,
 
Jim, ND9M / VQ9JC




Early 80m net

Wayne Dillon
 

Ge all. For those who missed the e-mail it was my privelage to stand in for Terry on the early 80m net tonight. He is/was on his way back from Branson and would be calling the late net. As it turned out I should have volunteered to do the late net as well because when I tried '40 at the late net time it was a bust. Oh well, that's how it goes sometimes. I was rewarded with a bumper check-in on '80 though:

N0NBD - Paul - KS
K0MC - Mike - CO
K2HT - Harold - MO
K5DCM - David - AR
KB4QQJ - Randy - NC
N9RLO - John - IN
KI8R - Michael - OH
AC5P - Michael - OK

To all who checked in a huge thank you for making my evening, it was a blast. To those I missed, my apologies and I will try harder next time. Hopefully '40 will start to improve as we progress towards spring. Unless otherwise informed I'll be back on '40 next week. If I have the opportunity I may give '30 a go over the weekend. If I do I'll post to QRPSpots.

72/3 es God Bless de Wayne - KC0PMH

P.S. Terry, I'm beginning to see the attraction of 80m :)
--
http://www.qsl.net/kc0pmh/   Under construction but please visit anyway.
 
QRP -  EFFICIENCY AND SKILL, NOT POWER. 
 
I'm British by birth but American by CHOICE!

Jesus came to pay a debt He didn't owe because we owe a debt we cannot pay...

The Lord bless you and keep you
The Lord make His face shine upon you, and be gracious unto you
The Lord lift up his contenance upon you and give you peace.

God Bless from Wayne Dillon - KC0PMH

Joshua 24:14-15
2 Cor 5:17
1 Jn 2:17
 

4 State QRP Group NCS - 40m & 160m
4SQRP #95
FPQRP #342 (Flying Pigs QRP Club)
G-QRP-C #11504
NAQCC # 0759
QRP-ARCI #11505
SKCC #1155
SOC #848
30MDG#1176
NEQRP #693
GORC #192


40m net

Wayne Dillon
 

Hi folks,
The late 40m net will take place on or around 7.122 at 02:30z
I stood in for Terry on the early 80m net and had a blast, Thanks to all who called in, I'll post the results early AM tomorrow,
72/3 de Wayne - KC0PMH

--
http://www.qsl.net/kc0pmh/   Under construction but please visit anyway.
 
QRP -  EFFICIENCY AND SKILL, NOT POWER. 
 
I'm British by birth but American by CHOICE!

Jesus came to pay a debt He didn't owe because we owe a debt we cannot pay...

The Lord bless you and keep you
The Lord make His face shine upon you, and be gracious unto you
The Lord lift up his contenance upon you and give you peace.

God Bless from Wayne Dillon - KC0PMH

Joshua 24:14-15
2 Cor 5:17
1 Jn 2:17
 

4 State QRP Group NCS - 40m & 160m
4SQRP #95
FPQRP #342 (Flying Pigs QRP Club)
G-QRP-C #11504
NAQCC # 0759
QRP-ARCI #11505
SKCC #1155
SOC #848
30MDG#1176
NEQRP #693
GORC #192


Re: Balloon beacon

Tom <n2uhc@...>
 

I won't be listening for the beacon since the last time I listened out for it I couldn't hear it on any freq. I guess 20 meters doesn't work from Kansas to Iowa (even at 90K feet). Nor was I able to hear the 2m or packet signals direct after my QTH was inside the radio horizon. I'm just a little too far away, I guess.

Tom N2UHC


Re: Balloon beacon

kb4qqj <kb4qqj@...>
 

heh heh..... that's what "tight" filters, perseverance and determination are for. Think of it as a challenge. :-)

Randy_KB4QQJ

--- In 4sqrp@..., Joe E wrote:

Are the launchers aware that the 20m qrp cw beacon may be impossible to hear on Saturday due to the ARRL DX contest going on at that time? 
Sorry to be the bearer of bad news,  cuz I was looking forward to hearing it here.
73 de K0NEB

Sent from Yahoo! Mail on Android


Re: Elecraft at OzarkCon

W0IIT
 

Jim,

Hey, looking forward to seeing you. Seems like a long time since you have been to any of the 4Sqrp functions. I remember well that you sent a note to Elecraft and they sent me a Elecraft tee because I was using my K1 to demo the KD1JV swr/pwr meter the group was selling as a kit. Also remember you showing up down at Twin Bridges with a newly built K2. Not sure if that was FD or just a qrp weekend get together. I think it was that same get together that you put a quick fix on my little 30 meter monobander!

Anyway, It will be good to see you at Ocon. I will have my K2 using it for K0N special events station and the "in hotel" dummy load test!!

cu es 72, Bart


Balloon beacon

cornhusker
 

Are the launchers aware that the 20m qrp cw beacon may be impossible to hear on Saturday due to the ARRL DX contest going on at that time?
Sorry to be the bearer of bad news, cuz I was looking forward to hearing it here.
73 de K0NEB

Sent from Yahoo! Mail on Android


Wednesday nite nets Please not NCS Changes for this week only

Wayne Dillon
 

Changes for this week only:
I will be calling the 01:00z 80m net while Terry journey's back from Branson and will continue with it until 02:00z, Terry should be back by then, If we get through with the 80m net by 01:30z then I will QSY to 40 (7.122 or thereabouts, keep an eye on QRP Spots). If we're going on past 01:30 then I will QSY to '40 whan '80 is played out. Nevertheless  I will be on '40 at 02:30z

The Four State QRP Comfortable nets meet each Wednesday night
beginning at 7:00 PM CST, 0100z. It's gonna be a great night to
stay in, stay warm, and play radio.  Tonight let's exchange our
4SQRP numbers.

If we have to QSY, I like to move up, Wayne likes to move down,
and Dick doesn't have to move much at all.

Add anything to the exchange that you wish, temp rig, ant, etc.
Checking into both, or even all, sessions is encouraged.
Who will be the first to check into all of them?

7:00 CST 0100z ... 80M CW Net on 3564,  KC0PMH NCS.
7:30 CST 0130z ... 40M CW Net on 7122,  KCØPMH NCS
8:00 CST 0200z ... 80M CW Net on 3564,  WAØITP NCS.
8:30 CST 0230z ... 40M CW Net on 7122,  KCØPMH NCS
9:00 CST 0300z ... 80M PSK Net on 3580.5,  NØTGR NCS

All are welcome!  After the nets, a list of checkins will be
posted on the Four State reflector.

72/3 es God Bless de Wayne - KC0PMH

--
http://www.qsl.net/kc0pmh/   Under construction but please visit anyway.
 
QRP -  EFFICIENCY AND SKILL, NOT POWER. 
 
I'm British by birth but American by CHOICE!

Jesus came to pay a debt He didn't owe because we owe a debt we cannot pay...

The Lord bless you and keep you
The Lord make His face shine upon you, and be gracious unto you
The Lord lift up his contenance upon you and give you peace.

God Bless from Wayne Dillon - KC0PMH

Joshua 24:14-15
2 Cor 5:17
1 Jn 2:17
 

4 State QRP Group NCS - 40m & 160m
4SQRP #95
FPQRP #342 (Flying Pigs QRP Club)
G-QRP-C #11504
NAQCC # 0759
QRP-ARCI #11505
SKCC #1155
SOC #848
30MDG#1176
NEQRP #693
GORC #192


Re: T/R Switching

Wayne Dillon
 

Hi Jim,
One of the solutions which springs to mind is the "Magic Box" an excellent example of one of the 4SQRP kits, check it out on the website. One other solution I have used in the past is a single transistor driven C/O driving a relay, don't forget to put a couple of back-to-back diodes across the RX input to help limit what the RX sees. I can't guarantee it's safety with the good ole '857 though. There will be others on here who will no doubt offer more accurate and up-to date advice. Do ckeck out the "Magic Box" though, as a standalone solution to T/R switching it's neat.
72/3 es God Bless de Wayne - KC0PMH

On Wed, Feb 13, 2013 at 10:06 AM, Jim, ND9M / VQ9JC <Claryco@...> wrote:
 

As a recent joiner of 4SQRP, I'm looking forward to getting back into building my own stuff. The NS-40 seems to be a popular and well designed rig, and my plan is to use my FT-857 for the RX side. Otherwise, the 857 is my day-to-day rig, and I have to protect it. (For QRP use, I drop the drive down and measure the output on an external wattmeter.)
 
So here's a newbie query from an old time ham (me!) who should know the answer but doesn't: What is everyone else who uses separate TX and RX units doing to mute their RXs when the TXs are doing their thing? A rule of thumb was given me a few days ago that there must be at least 40 dB attenuation to protect the RX front end, but that's also going to depend on what the TX power is to start with.
 
My old Hallicrafters RXs could handle a bit of a pop at QRP levels when I did manual switching. I'm a bit leery however about subjecting the "newfangled" 857 to similar treatment. I never had a Dow key which would've done nicely for the boat anchors, but - assuming I could put my hands on one - would a Dow key with its mechanical relay have fast enough response time to protect the 857's front end?
 
What other alternatives are currently in play?
 
Tks/73,
 
Jim, ND9M / VQ9JC




--
http://www.qsl.net/kc0pmh/   Under construction but please visit anyway.
 
QRP -  EFFICIENCY AND SKILL, NOT POWER. 
 
I'm British by birth but American by CHOICE!

Jesus came to pay a debt He didn't owe because we owe a debt we cannot pay...

The Lord bless you and keep you
The Lord make His face shine upon you, and be gracious unto you
The Lord lift up his contenance upon you and give you peace.

God Bless from Wayne Dillon - KC0PMH

Joshua 24:14-15
2 Cor 5:17
1 Jn 2:17
 

4 State QRP Group NCS - 40m & 160m
4SQRP #95
FPQRP #342 (Flying Pigs QRP Club)
G-QRP-C #11504
NAQCC # 0759
QRP-ARCI #11505
SKCC #1155
SOC #848
30MDG#1176
NEQRP #693
GORC #192


Re: new member

Wayne Dillon
 

Welcome aboard Bill,
You'll find that we're a friendly bunch here with a huge knowledge base (some of it even about ham radio!), all the members are committed to sharing their knowledge and skills, building  and operating so come on in and drink deeply.
We're glad to have yo and if you feel so inclined please feel free to join in on the Wednesday evening nets on '80 and '40 CW, '80 PSK31.
72/3 es God Bless de Wayne - KC0PMH


On Wed, Feb 13, 2013 at 10:14 AM, cheops210 <bill@...> wrote:
 

Hi all, Bill here, WD5DZG, been hamming for over 35 years, into scratch building and restoration of older gear. I'm in Tennessee along the division line between middle and west Tennessee. Look forward to exchanging info and eventually working all of you on home brew gear
Bill




--
http://www.qsl.net/kc0pmh/   Under construction but please visit anyway.
 
QRP -  EFFICIENCY AND SKILL, NOT POWER. 
 
I'm British by birth but American by CHOICE!

Jesus came to pay a debt He didn't owe because we owe a debt we cannot pay...

The Lord bless you and keep you
The Lord make His face shine upon you, and be gracious unto you
The Lord lift up his contenance upon you and give you peace.

God Bless from Wayne Dillon - KC0PMH

Joshua 24:14-15
2 Cor 5:17
1 Jn 2:17
 

4 State QRP Group NCS - 40m & 160m
4SQRP #95
FPQRP #342 (Flying Pigs QRP Club)
G-QRP-C #11504
NAQCC # 0759
QRP-ARCI #11505
SKCC #1155
SOC #848
30MDG#1176
NEQRP #693
GORC #192


Re: new member

Rich Fowler <k8meg@...>
 

Welcome Bill! This is a fun group and very knowledgeable! Good operators to!


--- On Wed, 2/13/13, cheops210 wrote:

 

Hi all, Bill here, WD5DZG, been hamming for over 35 years, into scratch building and restoration of older gear. I'm in Tennessee along the division line between middle and west Tennessee. Look forward to exchanging info and eventually working all of you on home brew gear
Bill



Re: T/R Switching

Gary <countyhunterw4gns@...>
 

  Howdy Jim, long time no speak !  I use this and am quiet happy: 
 
 http://www.4sqrp.com/MagicBox.php   Enjoy QRP, it’s loads of fun, and the 4 state people are EXTREMELY nice.
 
Gary-W4GNS
 
 
What other alternatives are currently in play?
 
Tks/73,
 
Jim, ND9M / VQ9JC


Re: T/R Switching

Rich Fowler <k8meg@...>
 

Hi Jim,

My suggestion would be the 4SQRP Magicbox. It will perform all the magic you want including T/R switching, muting, sidetone, etc. Look for it on our favorite qrp site under kits.

Good luck!
Rich


--- On Wed, 2/13/13, Jim, ND9M / VQ9JC wrote:

From: Jim, ND9M / VQ9JC
Subject: [4sqrp] T/R Switching
To: 4sqrp@...
Date: Wednesday, February 13, 2013, 11:06 AM

 

As a recent joiner of 4SQRP, I'm looking forward to getting back into building my own stuff. The NS-40 seems to be a popular and well designed rig, and my plan is to use my FT-857 for the RX side. Otherwise, the 857 is my day-to-day rig, and I have to protect it. (For QRP use, I drop the drive down and measure the output on an external wattmeter.)
 
So here's a newbie query from an old time ham (me!) who should know the answer but doesn't: What is everyone else who uses separate TX and RX units doing to mute their RXs when the TXs are doing their thing? A rule of thumb was given me a few days ago that there must be at least 40 dB attenuation to protect the RX front end, but that's also going to depend on what the TX power is to start with.
 
My old Hallicrafters RXs could handle a bit of a pop at QRP levels when I did manual switching. I'm a bit leery however about subjecting the "newfangled" 857 to similar treatment. I never had a Dow key which would've done nicely for the boat anchors, but - assuming I could put my hands on one - would a Dow key with its mechanical relay have fast enough response time to protect the 857's front end?
 
What other alternatives are currently in play?
 
Tks/73,
 
Jim, ND9M / VQ9JC


new member

cheops210 <bill@...>
 

Hi all, Bill here, WD5DZG, been hamming for over 35 years, into scratch building and restoration of older gear. I'm in Tennessee along the division line between middle and west Tennessee. Look forward to exchanging info and eventually working all of you on home brew gear
Bill


T/R Switching

Jim, ND9M / VQ9JC
 

As a recent joiner of 4SQRP, I'm looking forward to getting back into building my own stuff. The NS-40 seems to be a popular and well designed rig, and my plan is to use my FT-857 for the RX side. Otherwise, the 857 is my day-to-day rig, and I have to protect it. (For QRP use, I drop the drive down and measure the output on an external wattmeter.)
 
So here's a newbie query from an old time ham (me!) who should know the answer but doesn't: What is everyone else who uses separate TX and RX units doing to mute their RXs when the TXs are doing their thing? A rule of thumb was given me a few days ago that there must be at least 40 dB attenuation to protect the RX front end, but that's also going to depend on what the TX power is to start with.
 
My old Hallicrafters RXs could handle a bit of a pop at QRP levels when I did manual switching. I'm a bit leery however about subjecting the "newfangled" 857 to similar treatment. I never had a Dow key which would've done nicely for the boat anchors, but - assuming I could put my hands on one - would a Dow key with its mechanical relay have fast enough response time to protect the 857's front end?
 
What other alternatives are currently in play?
 
Tks/73,
 
Jim, ND9M / VQ9JC


New SOTA USA W0M-Missouri Summit Activation Today

Bill Gerth
 

Larry, N0SA, will be activating Bell Mountain in southeast Missouri this morning.  This will be the 5th activation of a different, new Missouri summit since the startup of the Missouri Association in SOTA two weeks ago.  Larry plans to start on 7.032 MHz CW at 1700 UTC.  If you're interested, this will be a new unique summit for SOTA awards and is worth 6 points.

Check out the details at "www.sotawatch.org" and look for an activation report later on "www.mosota.org"

72,
BILL GERTH, W4RK
SOTA USA W0M-Missouri
Association Manager



Re: Elecraft at OzarkCon

 

* On 2013 13 Feb 05:19 -0600, Jim Sheldon wrote:
Hope this answers the questions I've gotten off list so far.
You're optimistic!

73, de Nate >>

--

"The optimist proclaims that we live in the best of all
possible worlds. The pessimist fears this is true."

Ham radio, Linux, bikes, and more: http://www.n0nb.us


Re: Elecraft at OzarkCon

Jim Sheldon
 

From the emails I've been getting off list, some of you didn't completely read my post referencing Terry's stating that Elecraft will have a presence at OzarkCon.
 
There will be no Elecraft employees there, only a couple of volunteers (myself and Joe, N5LXW who is from Newton, KS) bringing and demonstrating our own personal Elecraft equipment.  There have been several other very welcome offers to bring other Elecraft equipment that Joe and I don't own to put on display such as the K1, KX1, K2, the T1 QRP auto tuner and various other of Elecraft's "mini-modules" that make building and aligning QRP kits (and other rigs as well) much better.  
 
In this case, Elecraft having a "presence" will consist of them "sponsoring" our volunteer effort by sending me their "logo" banner to grace the table(s) and tons of handout literature.  Joe and I will be there to answer questions and show off the capabilities of the equipment.  I plan on having the KX3 live, on the air operating in at least CW, RTTY, PSK31 and SSB.  It's capable of AM and FM as well.
 
Hope this answers the questions I've gotten off list so far.
 
Jim  -  W0EB
4SQRP #44
FP#-616
 
 


Re: Elecraft at OzarkCon!

Stephen Farthing
 

Jim, and other list members,

A few years back Jan, G0BBL, Alan M0PUB and I took the trip to Ozarkcon from England. We had made a couple of trips to Dayton for FDIM and Pacificon these being to big ones but I must admit Ozarkicon has a special place in my heart as the one event in the USA I would like to come back to. It is small enough to get to meet everyone and have a chat, everyone is incredibly friendly and the location is super. So if anyone is thinking "maybe I should go" don't hesitate, book it now. The fact that Elecraft there is a significant plus!

One memory that sticks with me is the evening meal, there were two choices, beef of chicken. The beef was running low so I chose the chicken. I sat down next to a ham I did not know and said "This chicken is really nice". He replied "That aint chicken boy, it's catfish". Boy did I feel stupid!

73s from a cold and wet England,

Steve G0XAR



On 13 February 2013 01:57, Jim Sheldon <w0eb@...> wrote:
-------- 4 State QRP List :: The Friendly One --------

*** OzarkCon coming April 5-6 ***

*** NOTICE: this list will be taken down within a week, please resubscribe at
http://groups.yahoo.com/group/4sqrp right away!

4 Staters,

As Terry said, myself and most likely N5LXW will have Elecraft equipment there for demonstration.  We're not Elecraft employees, simply volunteering to demo our personal equipment and since we aren't employees, will not be able to take orders if anyone wanted to purchase something.  Sales literature with price lists will be available for handout and anyone wanting to order something can easily do so over the internet with a laptop, tablet or smart phone.

Equipment currently planned for the demo's will be the QRP KX3, the K3 (can be turned down to 100 milliwatts), the P3 panadapter, the XG3 synthesized signal generator.  Also will have the Pignology "Pigtail" wi-fi remote RS-232 interface between the KX3 and my iPad4 for control and logging.  If N5LXW doesn't get hammered by his employer (he's the IT rep for a very major medical imaging firm) and called away that weekend, he's planning on assisting me with his K3 and P3 as well.  We'll both have portable (PAC-12 or derivative) antennas.

We both have the newest firmware in the P3 Panadapter/Spectrum Analyzer to allow for use of an external monitor (I'll have one there)  to display the spectrum along with the text from the CW/RTTY/PSK31 decoder in the K3.  I have a wireless keyboard interfaced to my P3 to allow for CW, RTTY and PSK31 transmit from the keyboard without the need for a computer using the optional SVGA interface in the P3.

The KX3 can also send and receive RTTY and PSK31 by using the built in CW keyer.  The radio translates your paddle inputs to either RTTY or PSK31 depending on mode selected and displays the decoded signals on the main LCD or, in the case of the Pignology company's "Pigtail" interface and a smart phone or iPad, CW, RTTY and PSK31 can be sent and received using the iPad's on screen keyboard or an external bluetooth keyboard.  (Both will be demonstrated).  The XG3 synthesized signal generator is factory calibrated to output precision signal levels of 1 microvolt (-107 dBm), 50 microvolts (-73 dBm), -33 dBm and 0 dBm.  There is a preset frequency on each band, 160 through 2 meters programmed into it as it comes from the factory.  There is a free utility program available on Elecraft's website that allows complete programming of the XG3 through an RS-232 interface.  It also has some neat features made available through the firmware programmers ingenuity.  It has 2 on board memories that can be programmed for multiple timed and output level functions.  Memory 1 has the ability to transmit a short message in 45 baud (60WPM) RTTY or if you like, in CW at any speed from 5 to 99 wpm.  Commands to set frequency, power level (within the 4 calibrated levels), number of repeats, etc can be programmed into Mem 1 via the computer interface.  Runs on a 9 volt battery and fits in a shirt pocket.

Make sure you come to OzarkCon 2013 if you'd like some hands-on time with newest additions to the Elecraft line of equipment.  Antennas will be connected and if it's possible to get and radiate a signal from within the room set up for the Vendor / Flea Market exhibits, live, on-the-air demo's will be ongoing.

Jim Sheldon - W0EB
4SQRP #44



>
> Elecraft will have a presence at OzarkCon this year!
>
> Jim Sheldon W0EB and another rep will have 2 tables set up with
> lots of equipment.   They won't actually taking orders, but will
> demonstrate some of the equipment, answer questions and hand out
> sales literature. However if you, or the guy standing next to you,
> has a smartphone you can place an order right from the tables via
> the internet.
>
> Another good reason to come to OzarkCon on April 5 and 6.  Cu there!
>
> 72 Terry WAØITP

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