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Hohentwiel 2M SSB/CW Transceiver Kit

DSP-10 2M Software Defined Transceiver Kit

Latest and selected earlier antenna and tower configurations at my home QTH

 

Tower is 30ft plus 10ft mast.  The elevation cross boom is 1 5/8"  6061-T6 thick wall aluminum 9ft long.  Vertical risers are 1 1/4" 6061-T6 thick  wall. 

Power dividers for 2M and 432 are home built with square aluminum tubing.  Az-El rotor is Yaesu G-5600B and is computer controllable.

 
An ARR .5dB NF GaAsFET preamp and 2M T/R relay are located on the mast.  Additional relays are used to share a common 7/8" heliax feedline between 432MHz and 1296MHz.   I am using 12VDC microwave high power pulse latching relays with a PTT driven pulse controller I designed in the shack.
 
9913 is used for all other runs runs except the 6M loop which is RG-8.
 
BVO2-3WL_Stacked_Yagis_at_K7MDL_Mar_2003_001.jpg
 
2M BVO2 3WL yagis on the ground just after building them
Antenna inventory at K7MDL QTH:
 
2 homebuilt DJ9BV design (2nd generation) 3 wavelength yagis - 10 elements each about 13.4 dBd theoretical gain, 16.4dBD when stacked.   Used with a mast mounted T/R switch and preamp, with 120ft. of  9913 coax for RX and 7/8" Heliax for Tx.
 
2x M2 21 element 432MHz yagis.  Using a Ampire mast mounted preamp, RF switched, helical filters in the front end.  Shares 7/8" TX coax with 1296.
 
2x 55 element 1296MHZ loop yagis.  About 24dBi.  M2 power divider. Mast T/R switch and Miteq preamp with input isolator.  120ft of 9913 for RX, and 7/8" Heliax for Tx.  The 7/8" is shared with 432 by switches at both ends.
 
KB6KQ 6M loop - no room for a 6M yagi since the 2M , 432, and 1296 yagis tilt up.
 
KB6KQ 2M loop for local SSB chat on 144.220
 
16 element NBS design home built yagi mounted on top of the center mast.
 
For HF I use a 20M inverted vee plus an end-fed zepp with a LDG RT-11 remote tuner at the base on the side of the house and property, running back to some trees 135ft away.

 

Below is the towable 34ft. articulated arm Man-lift.  Using this to install and adjust the antennas was affordable, and best of all, it made working on the antennas almost like they were on the ground.