[Premium-Rx] Hagenuk RX1001

[Barry Hauser]

Hi Rich & List:

All sounds highly premium to me, Hagenuks and Harris's included. ;-)

Not sure whether most of the list members know what a chirpsounder system
is, although most have probably heard them while listening to HF.  Here's an
attempt at a basic description -- Rich can correct me where I may have gone
off-base.

The system is manufactured by Barry Research (BR Communications, now part of
TCI) -- not sure if there are others, however the term "chirpsounder" is
copyrighted.

The system often consists of two transmitters (such as TCS-5) and one
receiver (e.g. RCS-5).  There have been a number of generations -- they may
be up to -7 or higher (Rich?).

The transmitters and receivers are situated great distance apart and are
precisely synchronized to sweep from (typically) 2 to 30 MHz over 4 minutes.
Other ranges might be 2-16 or 2-45.  The receiver plots the carrier strength
across the range.  They generate a graphic display and have other
capabilities for recording results.  The purpose is nominally to check on
propagation across the HF range over the geography defined by the
receiver/transmitter locations.

The US mil designation is TRQ-35, which has been fairly constent over the
evolution  of this stuff and embraces additional equipment, such as the
RSS-4x or higher, which is a spectrum monitor which sweeps the same
frequency ranges for all signal activity.  Essentially, the chirpsounder
system evaluates propagation while the spectrum monitor indicates existing
activity and crowding.  Apparently all this is sold for commercial as well
as military use.

When you are listening to a particular signal in the range, you'll sometimes
hear a single "bird sound" repeated a few times at 5-minute intervals.  The
sweep rate is 50 kHz when covering 2-16 mHz, 100 kHz when doing 2-30.
Sounds like a "chirp".

If you are interested, just search the web on "chirpsounder".  There is
quite a bit of info out there on it.

Maybe it should be added to the list of Premium Rx's?

Barry




----- Original Message -----
From: "Richard M. MC Clung" <sgm460122 at yahoo.com>
To: "Premium-RX LIST" <premium-rx at ml.skirrow.org>
Sent: Friday, July 04, 2003 3:38 AM
Subject: [Premium-Rx] Hagenuk RX1001


> I just returned from a trip overseas where I installed and trained
> allied naval personnel in the used and operation of chirp-sounder
> receivers and transmitters to support a nation wide real-time HF
> Frequency Management System.
>
> While there I was exposed to their communications facilities and the
> equipment they used. I saw rows and rows of rack mounted Harris RF-550
> receivers and Hagenuk RX1001L receivers. The Hagenuk receivers looked
> similar to the picture of the one in the manual posted to the web-page.
>  These receivers though, had an LCD display with a purplish glow. They
> were being used specifically for HF Link 11 TADIL circuits.
>
> RICH  WA6KNW
>
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