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Old November 16th 04, 06:10 AM
 
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Default FA: Harris RF-5020 HF Receiver/Exciter, with options

Relisted due to description changes.

Ends Nov-22-04 19:00:00 PST
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Here is an example of the outstanding Harris RF-5020
HF Receiver-Exciter. The unit covers the entire HF
range of 1.6 to 30mHz in 10Hz steps when operating from
the front panel. 1Hz tuning steps are available
through the serial control interface. Power input
is 26.4 VDC nominal @ 3amps max. Power out is
100 milliwatts nominal across the range, suitable for
driving a wide range of military RF amplifiers,
including the matching Harris units, the Redifon
GA-481 (which I use), the AM-3007/URT (part of the URC-35),
The AM-3349/GRC-106, and the Technical Materiel Corp
GPT-1K and PAL-350 to name a few.

This radio has a digital I.F., with DSP processing employed
during both receive and transmit. Available modes and
selectable bandwidths associated with each mode a

USB/LSB -- 1.5, 2.0, 2.4, 2.7, 3.0kHz
AME -- 3.0, 4.0, 5.0, 6.0kHz
CW -- 350Hz, 680Hz, 1.0kHz, 1.5kHz
Modem and Digital Voice -- 3.0kHz

The BFO function is variable +/- 4kHz in 10Hz steps
from the front panel or in 1Hz steps through the serial
interface.

AGC attack/hang/decay data is as follows for settings
other than "OFF":
FAST - 25msec/100msec/100msec
MEDIUM - 25msec/500msec/750msec
SLOW - 25msec/1500msec/1500msec
DATA - 25ms/0msec/16msec

This unit has the following options:

RF-5110MD High-Speed Data Modem. In the high-rate
39-tone mode, a channel transmission rate of 3466bps is
achieved by time differential phase shift keying (TDPSK)
of 39 tones which is combined with forward error correcting
to produce data rates ranging from 75 to 2400bps. The
modem is used during digital voice operation.

RF-5120AFC Harris ALE Automatic Link Establishment.
Please note this is the Harris proprietary "Autolink"
ALE system. It will work with other systems containing
the same option but not with the MIL-STD-188-141 ALE
most often encountered on the ham bands. The solution
in that case is to set up PC-ALE on your PC. :-)

RF-5130LPC Digitized Voice. Uses the U.S. DoD LPC-10E
(Version 52) 2400bps algorithm.

This unit passes the built-in-test (BITE), which checks
operation of the basic radio as well as all installed
options. The serial interface is operational, and I will
include software I wrote in QuickBasic which allows control
of basic radio functions via a PC. The radio has been
further checked out on the air via SWLing and numerous
ham contacts on 17, 20, 40, 60, and 80 meters. Digital
voice and Autolink functions have been checked out on-air,
or in side-by-side tests with another functional
unit where on-air testing was not practical.

Also included is a copy of the User Guide, which is
essential for learning the operation of this menu-driven unit.
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