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Technical details
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