MediaWiki API Result

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<?xml version="1.0"?>
<api>
  <query-continue>
    <allpages gapcontinue="Regulatory_Databases" />
  </query-continue>
  <query>
    <pages>
      <page pageid="535" ns="0" title="ReFLEX">
        <revisions>
          <rev contentformat="text/x-wiki" contentmodel="wikitext" xml:space="preserve">{{PagingModes}}
{{Rework}}
{{Signal
|Title=ReFLEX
|Picture=ReFLEX.jpg
|Frequencies=940.21 MHz,896 MHz,902 MHz,929 MHz,932 MHz,940 MHz,941 MHz
|Mode=NFM
|Modulation=FFSK
|Bandwidth=40 kHz
|Location=United States
|Signal file=ReFLEXaudio1.mp3
|Signal zip=ReFLEX_IQ_21-01-32_940225kHz.zip
|Signal description=ReFLEX is a two-way paging variant of FLEX.
|Additional categories=Digital,UHF,Commercial,Active,Land-Mobile Radio
}}
'''ReFLEX''' is a two-way paging variant of [[FLEX]].

Potentially also ReFLEX or another variant: https://www.sigidwiki.com/wiki/Unknown_paging_940p862


=== Modulation ===
Frequency Modulation-Fast Frequency Shift Keying (FM-FFSK)
 

== Channel Samples ==
First Channel:

{{#tag:html5media|File:ReFLEXaudio2.mp3}}

2nd Channel (3rd and 4th are similar):

{{#tag:html5media|File:ReFLEXaudio1.mp3}}

== Frequencies ==
896 MHz-902 MHz Base Tower Transmit Frequency

929 MHz - 932 MHz and 940 MHz - 941 MHz Receiver Transmit Frequency

== Decoding Software ==
; Hobby Level Software
* [http://www.discriminator.nl/pdw/index-en.html PDW] can somewhat decode the individual channels of ReFLEX

== Additional Links ==

*[http://content.arch.com/whitepaper/reflexwhitepaper.pdf ReFLEX White Paper]
*[https://en.wikipedia.org/wiki/ReFLEX Wikipedia ReFLEX]
*[http://m.eetasia.com/ARTICLES/1999SEP/1999SEP09_ICD_TAC.PDF Latest Developments for ReFLEX paging, 1999]

== Additional Images ==
{{Gallery||cg1|center|&lt;gallery widths=200px&gt;
 Image:ReFLEXthumb.jpg|
 Image:ReFlexthumbnail.jpg|
 Image:reflex_real.PNG|{{#tag:html5media|File:reflexing.wav}}
 &lt;/gallery&gt;}}</rev>
        </revisions>
      </page>
      <page pageid="134" ns="0" title="Redundant Digital File Transfer (RDFT)">
        <revisions>
          <rev contentformat="text/x-wiki" contentmodel="wikitext" xml:space="preserve">{{Signal
|Title=Redundant Digital File Transfer (RDFT)
|Picture=Digtrx_intro.jpg
|Frequencies=9240 kHz , 9065 kHz
|Mode=USB
|Modulation=PSK
|Bandwidth=1800 Hz
|Location=Worldwide
|Signal file=DIGTRX_INTRO.mp3
|Signal description=RDFT is an amateur radio digital mode used to transmit files.
|Additional categories=Digital,HF,Amateur Radio,Numbers Stations,Inactive
}}
'''RDFT''' is an amateur radio digital mode used to transmit files invented by Barry Sanderson, KB9VAK. Uses DPSK.

RDFT was designed for radio amateurs to send files, primarily pictures, known as Digital SSTV, although it was not very popular. Now it is used almost exclusively by the Cuban Number Station (HM01).

Original applications for coding, modulating, demodulating and decoding, which use DSP techniques to work with PC soundcard, were written by Barry Sanderson, KB9VAK. 
The only GUI application (which utilizes applications written by KB9VAK) known to copy the files (but not necessarily decrypt them) is DIGTRX made by Roland Zurmely, PY4ZBZ.

This software has been long abandoned for other modes and has been replaced by HamDRM and other similar digital SSTV software.

== Cuban Number Station ==
The only station known to utilize RDFT is the infamous Cuban Numbers Stations (Enigma designation HM01). HM01 transmits both a synthesized voice signal as well as the RDFT file transfer mode. Files are sent in .TXT format but are encrypted. This station is known to use the broadcast facilities - via a feeder or other unknown means - of Radio Habana.

UPDATE: As of 5/11/2022 -&gt; The station no longer uses RDFT and now uses a new mode called &quot;[[WinDRM#Decoding_Software|EasyDRF]]&quot;, which will be added to the wiki when possible.

== Decoding Software ==
; Hobby Level Software
[http://digtrx.software.informer.com/ DIGTRX] was developed by Roland Zurmely PY4ZBZ, a Brazilian Ham Radio operator. This software was originally intended for use in amateur radio for Digital SSTV, but is also able to send images and other computer files using the computer's sound card. 

== Audio Samples ==

===RDFT Samples===
{| class=&quot;wikitable&quot;
|+
|-
! scope=&quot;col&quot;| &lt;span style=&quot;font-size:175%&quot;&gt;RDFT Intro&lt;/span&gt;
! scope=&quot;col&quot;| &lt;span style=&quot;font-size:175%&quot;&gt;RDFT EOT&lt;/span&gt;
|-
|  {{#tag:html5media|File:DIGTRX_INTRO.mp3}} [[Image:Digtrx_intro.jpg|200px|center]]   
|  {{#tag:html5media|File:DIGTRX_EOT.mp3}}  [[Image:DIGTRX_EOT.jpg|center|200px]]
|}



=== Cuban Numbers Station ===

{| class=&quot;wikitable&quot;
|+
|-
! scope=&quot;col&quot;| &lt;span style=&quot;font-size:175%&quot;&gt;HM01&lt;/span&gt;
|-
|  &lt;html5media&gt;File:HM01_Sound2.mp3&lt;/html5media&gt; [[Image:HM01_Waterfall2thmb.jpg|200px|center]]   
|}


== Video Examples ==
*[https://www.youtube.com/watch?v=RTJnllr4dZ0 Shortwave Radio HM01 Cuban Numbers Station 9240 Khz (YouTube link)]
*[https://www.youtube.com/watch?v=-DFrOBZ2I9M Amateur RDFT Example (Mislabeled as WINDRM OFDM)]
*[https://www.youtube.com/watch?v=gvdm07a2xwQ Cuban HM01 Numbers Station, 17480 kHz 12/10/13]

== Frequencies ==
For up to date listings, subscribe to the [https://groups.io/g/UDXF/topics UDXF on Groups.io] and see the [http://www.numbersoddities.nl/ Numbers and Oddities] website


== Additional Links ==
*[http://i56578-swl.blogspot.com/search/label/The%20Cuban%20Lady I-56578 &quot;The Cuban Lady&quot; HM01]
*[http://signals.radioscanner.ru/base/signal212/ RadioScanner.RU DIGTRX]
*[http://www.qsl.net/py4zbz/eni.htm Cuban Numbers Station in HM01 Mode]
**The title is a mis-translation from Portuguese. HM01 is not a mode - it is an Enigma designator.
*[http://www.ominous-valve.com/hm01.html Cuban Voice/Data Hybrid HM01]
*[http://www.numbers-stations.com/HM01 Numbers Stations.com HM01]
*[http://www.numbersoddities.nl/tones.html Numbers and Oddities Recordings]
** You can find HM01 and its ancestor station SK01 recordings at the bottom left of this page
*[http://priyom.org/number-stations/digital/hm01 Priyom.org - HM01]

== Additional Images ==
{{Gallery||cg1|center|&lt;gallery widths=250px&gt;
 Image:HM01_Waterfall.png|
 Image:HM01_Waterfall2.jpg|
 &lt;/gallery&gt;}}</rev>
        </revisions>
      </page>
    </pages>
  </query>
</api>