[Elecraft] FIELD DAY PREP

[donovanf at starpower.net]

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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