Ch 8-10 + UHF Yagi
 Free Space Symmetric
570.250 MHz
 18 6063-T832 wires, inches
rfs = -6		; org space = -5.00" 
des = .001		; no change
drs1 = 2.25		; org space = 3.5" 
drs2 = 6.25		; org space = 6.5" 	
drs3 = 10.25		; org space = 9.5" 
drs4 = 14.25		; org space = 12.5"
drs5 = 18.25		; org space = 15.5"
drs6 = 22.25		; org space = 18.5"
drs7 = 26.25		; org space = 21.5"

dia = .375
dia2 = .5
dia3 = .395

rfl = 13.5
de = 6.5
dr1 = 3
dr2 = 3
dr3 = 3
dr4 = 3
dr5 = 3
dr6 = 3
dr7 = 3
 1   rfs    -rfl   0    rfs     0.0    0    dia3
 1   rfs     0.0   0    rfs     rfl    0    dia3 
 1   des    -de    0    des     0.0    0    dia
 1   des     0.0   0    des     de     0    dia 
 1   drs1   -dr1   0    drs1    0.0    0    dia2
 1   drs1    0.0   0    drs1    dr1    0    dia2 
 1   drs2   -dr2   0    drs2    0.0    0    dia2
 1   drs2    0.0   0    drs2    dr2    0    dia2 
 1   drs3   -dr3   0    drs3    0.0    0    dia2
 1   drs3    0.0   0    drs3    dr3    0    dia2
 1   drs4   -dr4   0    drs4    0.0    0    dia2 
 1   drs4    0.0   0    drs4    dr4    0    dia2
 1   drs5   -dr5   0    drs5    0.0    0    dia2
 1   drs5    0.0   0    drs5    dr5    0    dia2
 1   drs6   -dr6   0    drs6    0.0    0    dia2
 1   drs6    0.0   0    drs6    dr6    0    dia2
 1   drs7   -dr7   0    drs7    0.0    0    dia2
 1   drs7    0.0   0    drs7    dr7    0    dia2
 1 source
 Wire 4, center
     
 This yagi is used for a dual purpose; receive UHF channels from the "front" 
 and Ch 8 (181.25Mhz) + Ch 10 (193.25Mhz) off the "back".  Originally was a 
 Radio Shack UHF Corner Reflector where the reflector was removed to receive 
 the two VHF channels. Received poorly.
   
 I added a "resonant" element @ Ch 10, close to the UHF driven element. That
 improved the back side reception but AO shows that it's too long, sb about 
 27" and at 6" back from the driven element for best VHF pattern from the
 rear of the antenna. R/G = 6.8db @ 193.25Mhz; R/G = 4.8db @ 181.25Mhz. The
 feed impedance is poor at VHF and needs a dual-driven feed for normal use.
 It works for me b/c of the short distance to the VHF xmitters. 

 To test this, first use a mid UHF freq (570Mhz) and then test with Ch 10
 and Ch 8.