Digital Tape Recorder DTR
  DTR +

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Technical details
DTR
sampling rate : ~6.6 KHz
RAM : 1MB
max. Recording-time : ~155seconds
max. Setting-marks : 30
speed : variable up to 1/50
modulation :
signal mix (up-converter), 4 steps :
1. - no mix, 2. - input qrg x2,
3. - speed correlated output tone, 4. - x8
for exp. : input tone = 1000Hz; speed 1/10 = 100Hz;
modulation x8 = 800Hz out
special feature : record / play possible at the same time
AF-input : NF-out of the receiver 400mVss to 6Vss
(Impedance 17KOhm)
input level : AGC, CPU processed
input filter : 500-1800Hz
AF-output : ~500mW/8Ohm (headphones etc.)
keyboard : 7 keys
display : 3 LED - 7 segment-display
display-info : counter in seconds
or 0-989 (used as standard factory settings)
power supply : external power supply 10-15 Volt DC
housing : aluminium case, IP20
dimensions : ~170 x 100 x 45mm (like TNC2)
weight : ~500gr
temperature range : 0°C to 60°C
humidity : 5% to 95% (non-condensing)
AF Keying : 500Hz & 2300Hz tone, driven by a PC or Keyer
additional :
PTT during TX; Start of the DTR-MS+ end of TX
in and out switchable to the headphone
see also : DTR manuals   by ADE Vertriebs GmbH
Homepage   of DF7KF

                          Infos & order :
ADE Vertriebs GmbH
Gewerbepark 5
52388 Nörvenich, Germany
phone : ++2426 / 900001 fax : ++2426 / 900001


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