Get yourself a GMRS license  and put up a small 462.5 75 to 462.725 repeater 
and all of your family could use it.

John


  ----- Original Message ----- 
  From: ANDRE 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Thursday, November 13, 2008 11:44 AM
  Subject: [Repeater-Builder] 900mhz , DTR, 906 to 923.75 MHz FHSS


  Hi all,

  I have 2 motorola DTR FHSS 900mhz, and i want to bild a repeater for use in 
my farm thats near my store , 5miles.
  I know the max watts DTR are 1W, and i didnt find any Repeater or amp for it.

  I found 900MHz Smartamp, 10W amp that works on FHSS, so i was wondering,

  Can i use a DTR + simplex 40second rec + smartamp + antenna?

  Will this amp (its for data) - 12-103 SmartAmp Bi-Directional 900 MHz: 10 
Watt Designed for extending the range of 900 MHz wireless radio devices, this 
is particularly
  effective when used with Direct Sequence or Frequency Hopping Spread 
Spectrum. Full output power of 10 W is achieved with only 16 mW input to the
  amplifier. Above 16 mW input, the SmartAmp™ attenuates the input signal power 
and maintains the output power typically at 10W. The built-in dynamic power 
sensor in SmartAmp™ adjusts the Radio Frequency (RF) power output level by 
reading the input signal power. This Automatic Gain Control (AGC) Technology, 
Teletronics' patented technology effectively making the RF amplifiers "Plug & 
Play" delivers the maximum output power at various input levels while keeping 
the
  distortion at a minimum. 

  Technical Specifications Smartamp

  Features:

  10 Watt

  Operating Range:

  902 - 928 MHz

  Operating Mode:

  Bi-directional, TDD

  Transmit Gain:

  28 dB (can be customized to 33dB)

  Frequency Response:

  ± 0.75 dB over operating range 

  Output Power:

  10 Watt (+40 dBm) nominal

  TX Input Power:

  500mW

  Receiver Gain:

  12 dB typical ±1 dB 

  Noise Figure:

  3.5 dB typical

  Connectors:

  N-type, female, 50 Ohm

  Lightning Protection:

  Quarter Wave Technology

  DC Surge Protection:

  Available

  Power Consumption:

  <2A @ 12-15 VDC (100% duty cycle)

  Operating Temperature:

  Amplifier: -30 °C to + 70 °C 
  15V DC injector: -30 °C to + 70 °C 

  will work in this way?
  or anyone knows a repeater for this digital radios(cheap please) 

  Thanks

  Mattos



   

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