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Antenna Kit Differences
Posted: Fri Jan 14, 2011 1:49 pm
by henryg
Hello. I have 2 Motorola Antenna Kits; one HAD4008A, 152-162 range and one HAD4009A, 162-174 range. Other than the obvious difference, frequency range, is their any other difference between the two? I don't have them in front of me right now, but how could I tell them apart if I didn't know the difference? Thanks in advance. Henry
Re: Antenna Kit Differences
Posted: Fri Jan 14, 2011 2:56 pm
by motorola_otaku
Length of the antenna whip. Generally speaking, lower in frequency equals longer in length.
Re: Antenna Kit Differences
Posted: Fri Jan 14, 2011 6:31 pm
by AEC
Aside from the whip length diffference for the differing frequencies, the kits are identical in all other respects.
Re: Antenna Kit Differences
Posted: Sat Jan 15, 2011 1:30 pm
by RadioSouth
While where on it anyone get why the low split VHF 1/4 wave has that removable washer for impedance matching but gets removed when used with mid and high split whips ?
Re: Antenna Kit Differences
Posted: Sat Jan 15, 2011 4:30 pm
by Astro Spectra
Slightly OT: there is the PCTEL MWV1365S 136-174 MHz 38 MHz 1/4 whip that has a base compensation network that offers the same gain as a normal 1/4 but covers the whole VHF band without tuning.
Re: Antenna Kit Differences
Posted: Sun Jan 16, 2011 2:35 pm
by Will
RadioSouth wrote:While where on it anyone get why the low split VHF 1/4 wave has that removable washer for impedance matching but gets removed when used with mid and high split whips ?
That washer matches the impedance at the low range in the base/antenna mount. AKA large button NMO antenna mount.