[Elecraft] FIELD DAY PREP

Fri Jun 14 19:54:15 EDT 2019

Absolutely the best!   And the previous scores substantiate such.

I've been using a 134 ft center fed dipole with balanced feed for 50+ 
years at my various QTH's.  I've yet to find any antenna that performs 
better and always consistently without effects of wind, rain, snow and ice.

73

Bob, K4TAX

On 6/14/2019 6:47 PM, AB4IQ wrote:
> We use Ladder line fed dipoles.  The dipole is 134ft long and the feed lines
> (400 ohm Ladder Line) are cut at 96ft.  one of our antennas ladder line
> needs an extra length and I think it is cut at 66 ft. extra.  We place the
> antennas far enough apart but are in a straight line.  The ladder lines are
> terminated into DXEngineering baluns and with less than ten feet of coax
> from the balun to the rigs.  We have had three rigs on the same band but
> different modes and no interference and have been doing it this way for
> years.  We gave up on beams, G5RV's, and verticals long ago.  Our call is
> W4NJA here in Paducah, Ky. and normally operate 3A with a GOTO Station
> normally on 6 meters.  If you work us on CW you will be talking to my K3
> with all the K3S stuff in it.  The tuner works great on all bands.
>
> Long term forecasts looks like maybe some rain here in far W. Kentucky.
>
> Ed... AB4IQ
>
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of
> donovanf at starpower.net
> Sent: Friday, June 14, 2019 12:50 PM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] FIELD DAY PREP
>
> When running multiple HF transmitters simultaneously its wise to:
> - avoid multi-band antennas, or
> - use external bandpass filters, or even better
> - avoid multi-band antennas and use bandpass filters
>
>
> 73
> Frank
> W3LPL
>
> ----- Original Message -----
>
> From: "Bob McGraw K4TAX" <rmcgraw at blomand.net>
> To: donovanf at starpower.net
> Cc: elecraft at mailman.qth.net
> Sent: Friday, June 14, 2019 5:36:21 PM
> Subject: Re: [Elecraft] FIELD DAY PREP
>
> Neither should G5RV antennas.
>
> Bob, K4TAX
>
>
> Sent from my iPhone
>
>> On Jun 14, 2019, at 10:44 AM, donovanf at starpower.net wrote:
>>
>> oops... I meant to say:
>>
>>
>> Inverted V dipole and verticals are NOT allowed at W3AO
>>
>> 73
>> Frank
>> W3LPL
>>
>> ----- Original Message -----
>>
>> From: donovanf at starpower.net
>> To: elecraft at mailman.qth.net
>> Sent: Friday, June 14, 2019 3:40:43 PM
>> Subject: Re: [Elecraft] FIELD DAY PREP
>>
>> We use a dozen K3 transceivers at W3AO, we've never had a K3 failure
>> despite running as many as four K3s on the same band (CW SSB Digital
>> and GOTA). The four K3s on each band do not interfere with each other
>> either.
>>
>>
>>
>> Our secrets to success:
>>
>>
>> - same band antennas are horizontally polarized and oriented exactly
>> end-to-end. Inverted V dipole and verticals are allowed. 100 feet of
>> tip-to-tip spacing appears to be adequate, although we use much more.
>>
>>
>> - We install W3NQN bandpass filters on every K3 to avoid overload from
>> signals from nearby antennas for other bands.
>>
>>
>> Its not widely known that K3 transceivers have built in bandpass
>> filters. As far as I'm aware their performance characteristics have
>> never been published, hence our preference to also also use external
>> bandpass filters.
>>
>>
>> 73
>> Frank
>> W3LPL
>>
>>
>>
>>
>>
>> ----- Original Message -----
>>
>> From: "Bob McGraw K4TAX" <rmcgraw at blomand.net>
>> To: elecraft at mailman.qth.net
>> Sent: Friday, June 14, 2019 3:24:01 PM
>> Subject: Re: [Elecraft] FIELD DAY PREP
>>
>> With stations running 100 watts or less and reasonable antenna
>> separation, I've found no reason for a Receiver Input Protector.
>> Although, it might be a good idea to circumvent a "screw up" by an
>> operator. I've seen some mighty strange things done by knowledgeable
>> hams at Field Day.
>>
>> 73
>>
>> Bob, K4TAX
>>
>>
>>> On 6/14/2019 10:07 AM, KENT TRIMBLE wrote:
>>> Have any of you used Ameritron's "Receiver Input Protector" model
>>> TRP-150? I find no reviews on eHam.
>>>
>>> 73,
>>>
>>> Kent K9ZTV
>>>
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>
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