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Author Topic: VHF Whips?  (Read 1285 times)
KC8OYE
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Posts: 297




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« on: September 22, 2010, 01:16:35 PM »

I stumbled across an antenna that was marked 136-174mhz. complete with it's magmount base..

after some research, i figured out it's an "Antenna Sepcialists" ASPS177  I even found the doc's for it including tuning instructions.  it is w/o a whip... (just the base coil and spring)

a friend with one of those snazzy mfj antennalyzers tested it with a piece of whip I had (thats too short)and it appears to be in working order...

so now I'm trying to figure out if I can buy antenna whips by themselves somewhere?  the instructions say 41" for about 147mhz so I figure i need a minimum of 42" for tuning room.. any ideas?
this is normally about a $60-$70 commercial grade mobile antenna so I'd like to be able to use it :>
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KB9JXZ
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Posts: 36




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« Reply #1 on: September 22, 2010, 03:38:54 PM »

 Hello,
  I'm sure you can order a new one. When I got one last , I was looking for a old cb antenna from other radio guys and garage sales and it didn't take long and I had one plenty long.

73
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K3GM
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Posts: 1777




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« Reply #2 on: September 22, 2010, 05:56:25 PM »

...........so now I'm trying to figure out if I can buy antenna whips by themselves somewhere?.....

Sure (depending on the diameter of the whip at its base), Ham Radio Outlet sells quality Larsen Kulrod whips for around $14.  I recently ordered one.  The part number is: W-490B
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KM3F
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Posts: 501




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« Reply #3 on: September 22, 2010, 07:46:30 PM »

Two things you might want to know.
The 41" length is 'known as' a 5/8 wave antenna. (they really are not)
Measure the antenna mount whip diameter and get one that fits.
If you were to use a larger diameter and drill out the mount to fit, the length no longer follows original instructions. The larger diameter one would end up being shorter for a given VSWR at  the desired test setting frequency.
Good luck.
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KC8OYE
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Posts: 297




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« Reply #4 on: September 22, 2010, 08:32:43 PM »

ok thanks Smiley
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