How are you using this on the L ? NO on receive, then apply voltage to close it
on TX ? When open , does the L float or go to ground?
Sent from my iPad
> On Jul 25, 2019, at 8:36 AM, FZ Bruce <k1fz@twc.com> wrote:
>
> Mark
> Although I am using the RF Parts relay on transmit verticals they work
> great. They are 12 volt DC coils and are marked so on the relay. I
> test checked mine with a little 9 volt battery and pulls great.In the
> advertisement blog it says " Rated coil voltage VDC: 26.5 " This is an
> advertising error.
>
> https://www.rfparts.com/vhc3-12v.html [1]
>
> 73Bruce-k1fz
>
> -----------------------------------------From: "Mark K3MSB"
> To: "CUTTER DAVID"
> Cc: "Rob Atkinson", "TopBand List", "Guy Olinger K2AV"
> Sent: Thursday July 25 2019 7:59:32AM
> Subject: Re: Topband: RFI on TB
>
> I’d be interested in hear about this also. I’ve always used ground
> radials for my INV-L but this year I’d like to try an FCP.
>
> I’ve read that the INV-L as well as the FCP need to be floated
> during
> receive, which means two relays at the INV-L.
>
> 73 Mark K3MSB
>
> On Thu, Jul 25, 2019, 4:11 AM CUTTER DAVID via Topband <
> topband@contesting.com> wrote:
>
>> Guy
>> Slightly OT, but how do you deal with re-radiation from your
> inverted L?
>> I'm about to erect one of your inverted L on FCP and my rx loops
> are about
>> 50m away in the other corner of the field. Is that far enough?
>> David G3UNA/G6CP
>>
>>> On 24 July 2019 at 07:13 Guy Olinger K2AV wrote:
>>>
>>>
>>> I gotta agree with Rob. An inverted L aerial wire will hear ALL
> the noise
>>> that is around. Mine sure does. RX antenna will help enormously
> if there
>> is
>>> a place to put one that does not get the noise second hand off
> the L. Not
>>> enough room? A bit complicated, but "repeated" noise off the L
> can be
>> dealt
>>> with.
>>>
>>> The worst noises around here heard on my L were all repaired by
> the power
>>> company. The nastiest noise was very hard to find, I actually
> never
>> "found"
>>> it by looking for it. Noise turned out to be from a bad splice in
> an
>>> underground 13 kV cable going from the 13 kV delta overhead out
> on US 64
>> to
>>> the transformer for my eastern neighbor and next house over. It
> would
>> come
>>> and go with extended cold weather, but never would correlate to
> sunlight
>> or
>>> darkness. I would hear it next to my transformer walking around
> with my
>>> battery K2 and a rubber ducky. It would never locate to up on a
> pole
>> (only
>>> power noise that didn't).
>>>
>>> Finally the splice hard-arced, exploding the fuse up on the pole
> for the
>>> neighbor's 13 kV feed, and taking those two houses off the grid.
> The
>> noise
>>> went away with the cannon shot noise. Blessed quiet on 160 and
> 80. I had
>>> put up with that for almost four years.
>>>
>>> In the end, Duke Energy completely reran his AND my buried 13kV
> lines,
>> and
>>> replaced his transformer. 35 years in the ground, 35 year old
> cable
>> design
>>> and materials, and deficient in THEIR opinion. Was really fun to
> watch
>> them
>>> use this super-neat burrowing setup that went right UNDER the
> woods and
>> the
>>> creek (whole other story). Now I can hear the lesser noises on my
> L from
>>> all over Apex and Cary :>) Need RX antenna for sure. That way I
> don't
>> have
>>> to listen to the Cary, NC noise (NE) at the same time as the
> generally
>>> closer and louder Apex, NC noise (S, SE).
>>>
>>> 73, Guy K2AV
>>>
>>> On Tue, Jul 23, 2019 at 9:37 AM Rob Atkinson
>> wrote:
>>>
>>>>> Over past few months, I have picked up an S5-S7 noise
> signature on
>> my TB
>>>> inv
>>>>> L antenna with K2AV FCP system.
>>>>
>>>> I would not use an inverted L for receiving. Unusable for rx at
> my
>>>> QTH but FB for transmitting.
>>>>
>>>> 73
>>>> Rob
>>>> K5UJ
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>
>
> Links:
> ------
> [1] https://www.rfparts.com/vhc3-12v.html
> [2] http://www.contesting.com/_topband
> [3] http://www.contesting.com/_topband
> [4] http://www.contesting.com/_topband
> [5] http://www.contesting.com/_topband
>
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