[Boatanchors] Antenna Relay, CPO, Key, DSP Filter and more FS

Ken Simpson, W8EK W8EK at flham.net
Sat Feb 5 16:29:31 EST 2011

MFJ Antenna Relay, Code Practice Oscillator, Key, DSP Audio
Filter, and Digital Interface For Sale:

MFJ 1708 Antenna Relay, similar to Dow Key relay

Do you enjoy using vintage tube type transmitters and receivers
of your youth? It was a real chore to switch your antenna from
transmit to receive and back unless you had a Dow Key Relay.

This neat little MFJ automatic T/R switch senses transmitted RF
and switches your antenna from receive to transmit using a relay.
It shorts your receiver antenna input to ground to protect your
receiver. It also provides an auxiliary contact closure to
ground during receive (opened in transmit).

Instead of using RF sense to switch the antenna, you can also
use a control line input that lets your key/keyer or PTT line
switch the antenna. An adjustable time delay circuit gives you
delayed switching. This prevents your antenna from switching
between dots and dashes or between syllable and words.

It works on all modes -- CW, AM, SSB, FM, and digital modes.
It handles 200W SSB PEP. Compact 4 W x 2 5/8 H x 1 1/2 D inches.

It has SO-239 coax connectors for antenna, transmitter, and
receiver. It has control input, auxilary contact closure to
ground, time delay screwdriver adjustment, power jack. It requires
13 V DC.

This one appears to be new, never used, still in its original box.

MFJ sells these for about $80.  Buy this one for $55.

Code Practice Oscillator:

MFJ 557 code practice oscillator with key

This is a traditional code practice oscillator, with adjustable
volume and tone. It includes a straight key on a nice base. It
operates from a 9 volt battery or from a wall wort (not included).

This one works fine and looks fine also.

With paper work for $25.

CW Key:

Nye Viking Speedex 310-001 "Oval Base" Key
Nice action, with nickel hardware.
Nye sells these for $58. This one is only $35.

Cables for CW keys and keyers:

Cable for straight key
About 3 feet long, with a mono 1/4 inch phone plug on it,
as is used with a straight key. $5
As above, but 1/8 inch (3.5 mm) plug. $5

Cable for paddles
About 3 feet long, and with a 1/4 inch stereo connector
on the end, like used by most rigs. $8
As above, but 1/8 inch (3.5 mm) plug $8

Timewave DSP-599zx DSP Processor / Audio Filter:

Calling it an audio filter does not tell the whole story.
It is really much more. It represents the latest generation
of Digital Signal Processing (DSP) audio filtering, incorporating
the newest high speed CPU. The LCD display, push buttons and
Visible Memory let you see the exact settings of the filters.
The DSP-599zx works in all modes. It is a dream for the non-voice
modes, as well as voice and CW modes. Data filters supported
in the filter are RTTY, Amtor, PACTOR, G-TOR, HF Packet, SSTV,
WeFax, SITOR and Clover. It requires 13 V DC at 1 amp which
is supplied by the included wall wort.

This particular unit works fine and looks very nice. A wall
wort power supply and paper work are included for $295.

"Rigblaster Plus / USB" Digital Interface:

Rigblaster Plus / USB by West Mountain Radio
A RIGblaster is the easiest way to connect your radio to
a computer so that you may operate using over 100 existing
and future ham radio sound card software programs.
You will be able to operate over 20 exciting modes that
your radio could not operate otherwise.

Presently available ham radio sound card software, a RIGblaster,
a radio and a computer is the easy and modern way to operate
with every existing or future Amateur Radio sound card program.

This particular unit is complete, in its original box, with all
of the items listed on the enclosed paper work. Software CD is
included, along with many cables. It looks like this unit may
not have ever been used. Most bags appear that they have not
been opened.

West Mountain sells these for about $160. Buy this one for
only $115.

Prices do not include shipping from Florida.



Ken, W8EK

Ken Simpson
E-mail to W8EK at FLHam.net or W8EK at arrl.net
Voice Phone  (352) 732-8400

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