[Elecraft] FIELD DAY PREP

[AB4IQ]

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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