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[time-freq] TAPR Announces TADD-1 Distribution Amplifier

John Ackermann N8UR jra at febo.com
Mon Nov 21 19:11:55 UTC 2005


TAPR is pleased to announce the immediate availability of the TADD-1 RF 
Distribution Amplifier kit.

The TADD-1 is a six channel RF distribution amplifier.  Its primary use 
is to allow a single frequency source (e.g., a GPS disciplined 
oscillator) to drive the "external reference" input of several test 
instruments.  The usable frequency range is 200kHz to 30MHz, and the 
maximum signal output level into 50 ohms is 2.75 volts peak-to-peak, or 
about +12dBm.  The maximum high-impedance output is 5 volts peak-to-peak.

To minimize ground loops in sensitive test applications, the input and 
each of the six outputs is transformer coupled and DC blocked.  RF 
connectors are ground-isolated BNC.  A jumper allows the input to be 
terminated in 50 ohms, or to present a high impedance.  An optional 
bandpass filter can be installed to reduce spurious responses.

The 12 volt power input is fused and protected against reverse polarity. 
  Current drain depends on the number of loads and ranges from 50 to 150ma.

The RF and DC inputs are arranged so that two (or more) TADD-1 boards 
can be stacked, sharing common RF and DC inputs.

The TADD-1 kit is priced at $99 for TAPR members ($109 for non-members) 
and is shipping now.  Assembled and tested versions may be available at 
a later date; contact the TAPR office for details.

For more information about the TADD-1, or to place an order, go to 
http://www.tapr.org/kits_tadd-1.html or send email to tapr at tapr.org.

(Note: the order page is currently being updated; if it still says 
"Price TBD", please try again later.)




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