[MRCA] Gilbert Broadband VHF Antenna Purchase
KA1LHZ
sboard.ka1lhz at gmail.com
Tue Sep 20 14:51:53 EDT 2016
Shekespeare used to make cheap chicken band and marine antennas.
DE KA1LHZ
On 09/20/2016 01:15 PM, comcast wrote:
> manufacturer is shakespeare. looks like the 4265. 118 to 174 gain
> antenna 60 W power
> Jeff KG2bz
>
> Sent from my iPhone
>
> On Sep 20, 2016, at 10:35 AM, B. Smith <smithab11 at comcast.net
> <mailto:smithab11 at comcast.net>> wrote:
>
>> Several of us purchased the VHF "broadband" antennas at
>> Gilbert. I got mine for $15 bucks because the data plate was
>> scratched and the plastic tip was missing. ;-)
>> I am not a big fan of SWR but a quick check across two
>> meters (144-148) resulted in a low 1.4-1.7 SWR with 10 feet of RG-58
>> feed line and then tuning my analyzer lower in frequency the antenna
>> is usable for my purposes on UNICOM. Tuning higher in frequency to
>> 225 Mcs still got a fairly low SWR. I guess I will have to do one of
>> those graphs and also see the effect of feedline length.
>> On the two meter frequency of 145 Mcs even a 1.7 SWR would
>> not result in that much of a feed line loss and my Older GE MVP APRS
>> transmitter probably would not care.
>> My antenna data plate was scratched and the lower frequency I
>> assume is 116 or 126 or 136?? Measuring a total length of around 36
>> inches it looks like a end fed half wave which would not require a
>> large ground area. But I do smell a internal "voltage" balun of which
>> I am not very fond of. But there is "no free lunch" :-\
>>
>> See attach photos (2) of antenna and data plate.
>>
>> Anyone else have any info? Any research?
>>
>> Z
>>
>> <mdbflhbgacpnpgbg.jpg>
>>
>> <lefobpdpcojalcac.jpg>
>>
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>
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