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[K2]PSK31 QRP?

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Rhulett

[K2]PSK31 QRP?

For some reason I've become interested in trying PSK31 with my K2/10.
Receive works well, but haven't tried transmitting yet because my laptop has
only USB connectors. Before buying an interface, would appreciate knowing
whether others have had success with QRP level PSK31. Which interfaces play
well with the K2?

73, Curt KB5JO

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LA8OKA

Vedr: [K2]PSK31 QRP?

I use the MicroHam USB Interface III, it requires a small modification to the K2, but works very well.
http://www.microham.com/contents/en-us/d158_U3.html
PSK31 works very well with 5 watt.

Martin Storli
LA8OKA
Oslo, Norway

ARCTICPEAK's Radio pages!
http://www.arcticpeak.com/radio.htm

Fra: Curt <[hidden email]>
Til: [hidden email]
Sendt: Torsdag, 21. november 2013 13.49
Emne: [Elecraft] [K2]PSK31 QRP?

For some reason I've become interested in trying PSK31 with my K2/10.
Receive works well, but haven't tried transmitting yet because my laptop has
only USB connectors. Before buying an interface, would appreciate knowing
whether others have had success with QRP level PSK31. Which interfaces play
well with the K2?

73, Curt KB5JO

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Don Wilhelm-4

Re: [K2]PSK31 QRP?

In reply to this post by Rhulett

Curt,

Most any interface box will work with the K2 if you use the headphone
output and mic input - even homebrew. PTT can be derived from a USB to
serial adapter and a "one transistor keying" circuit. Take a look at
my website www.w3fpr.com for the K2 Fixed Audio Output article and the
Switchbox for Digital Modes article. It may be possible to use the
laptop soundcard, but external soundcards are easy to use and inexpensive.

You do not need the Compression Disable part of the switchbox article if
you turn on RTTY mode and set up the filters just like your SSB
filters. With RTTY mode, the compression setting is independent of the
setting used for SSB -- Compression must be at 1-1 for data modes.

You can find an updated circuit for the Fixed Audio Output at the newly
mirrored N0SS website
http://www2.opparc.org/mirrors/n0ss/www.n0ss.net/wsdindex.html. Boards
are no longer available, but the circuit is simple enough to construct
on perfboard.

73,
Don W3FPR

On 11/21/2013 7:49 AM, Curt wrote:

> For some reason I've become interested in trying PSK31 with my K2/10.
> Receive works well, but haven't tried transmitting yet because my
> laptop has only USB connectors. Before buying an interface, would
> appreciate knowing whether others have had success with QRP level
> PSK31. Which interfaces play well with the K2?
>
> 73, Curt KB5JO
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

Fred Smith-2

Re: [K2]PSK31 QRP?

The SignaLink USB units work very easily with the K2 all you need is an USB
port on the computer it has its sound card built in it.

As far as QRP and digital modes they made for one another.

73,
Fred/N0AZZ
K3 Ser # 6730--KX3 # 5210--K2/100 # 6470-KAT100
P3/SVGA--KAT500--W2
Amps Elecraft KPA500 HF/6m--Alpha's 9500 HF--87A HF--Mirage B-5030-G
300+w--(2) B-5016-G's 165w 2m

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Don Wilhelm
Sent: Thursday, November 21, 2013 7:23 AM
To: Curt; [hidden email]
Subject: Re: [Elecraft] [K2]PSK31 QRP?

Curt,

Most any interface box will work with the K2 if you use the headphone output
and mic input - even homebrew. PTT can be derived from a USB to
serial adapter and a "one transistor keying" circuit. Take a look at
my website www.w3fpr.com for the K2 Fixed Audio Output article and the
Switchbox for Digital Modes article. It may be possible to use the laptop
soundcard, but external soundcards are easy to use and inexpensive.

You do not need the Compression Disable part of the switchbox article if you
turn on RTTY mode and set up the filters just like your SSB filters. With
RTTY mode, the compression setting is independent of the setting used for
SSB -- Compression must be at 1-1 for data modes.

You can find an updated circuit for the Fixed Audio Output at the newly
mirrored N0SS website
http://www2.opparc.org/mirrors/n0ss/www.n0ss.net/wsdindex.html. Boards are
no longer available, but the circuit is simple enough to construct on
perfboard.

73,
Don W3FPR

On 11/21/2013 7:49 AM, Curt wrote:

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Jim Dunstan

Re: [K2]PSK31 QRP?

In reply to this post by Rhulett

At 07:49 AM 11/21/2013, you wrote:
>For some reason I've become interested in trying PSK31 with my
>K2/10. Receive works well, but haven't tried transmitting yet
>because my laptop has only USB connectors. Before buying an
>interface, would appreciate knowing whether others have had success
>with QRP level PSK31. Which interfaces play well with the K2?
>
>73, Curt KB5JO

Hi Curt

PSK31 has become my mode of preference. I operate QRP .... 1.5w idle
es abt 3-4 w peak. I originally operated with a home brew 100w
linear (tube type) with about 20w peak output ... but the amp took
up most of the desk space so I de-commissioned it almost 2 years ago
with the intention of getting a modern solid state amp. In the
meantime i continued to operate barefoot (QRP). I hardly noticed a
difference. I still worked some DX and anyone I called came back to
me. Calling CQ almost always brings a response. My antenna
arrangement consists of 2 dipoles (20 & 15) at the top of my 50ft
tower ..... nothing extraordinary. The USB version of SignaLink
does and excellent job as an interface.

If I had a less efficient antenna system I might go for a 100w
linear. As it is QRP works wonderfully and I have a nice clean
operating desk hi hi.

Jim, VE3CI

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