It is possible to tune the 1103 receivers below 100kHz,
and to disconnect the internal ferrite rod antenna on MW + LW, by using this
simple procedure with the SCAN function.
Normally, a 'scan' will remain within the selected band,
with the tuning scale showing progress through the band. If you start a scan
from outside a band, the scan will become 'trapped' within the next band
that is reached. However, starting between 1 & 9kHz above any band upper
edge and scanning down, will bypass the 'band' system, and will not switch
to the ferrite rod in the range 1710 - 100kHz. The tuning will also continue
below 100kHz.
So, select 1711 by direct entry:- [1] [7] [1] [1] [band+/AM] and scan down:
hold [BAND-] for 2 seconds. As soon as the frequency is below 1710kHz you
can stop the scan and use the rotary control, or you can let the scan
continue below 100kHz. The antenna is now switched for the telescopic or
external antenna. I suggest you tune it down to zero and store this in
preset 0, or store 99kHz in preset 99. Also store any frequencies for which
you wish to use the external antenna input. You can store any frequency with
the [SSB] mode 'on' for CW reception. Once you enter a frequency or change
band on the keys, the system will revert to the normal tuning range and with
the ferrite rod for MW + LW.
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There has been a suggestion that you must start the scan at 21951kHz because
that was the designer's employee number, but that story is apocryphal!
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There is another procedure at http://mods.radioscanner.ru/degen/mod29/ for
tuning above 30MHz (AM), possibly up to 35 - 37MHz depending on hardware
alignment
===========================================
A recent posting on Youtube seems to promise a way to tune an 1103 receiver
to the OIRT FM Band below the specified limit of 76MHz, in 10kHz steps:
http://www.youtube.com/watch?v=Y4QTEyM13Ds
I do not understand his procedure, which seems to be
random, and I cannot persuade my DE-1103 to do it, so if you have any ideas
please mail me
JH 18 Oct.09
fonte:- http://ukradio.info/Degen/VLF.txt |
