[Elecraft] UPDATE KPA1500 on 160M

[Michael K Bottles]

I am using the same unit as Lyn (BD4116) on a center fed 250’ doublet Inverted Vee with about 50 feet of 600 ohm open ladder line and about 15 feet of 50 ohm coax. 

The KAT500 matches all bands except 6 to 1:1. 6 is matched to 1.3:1. I have been told by some that the hybrid unit is worthless, but I am happy with its performance. 

(However truth be known although licensed since 1965 I am a casual ham, just a fun side hobby for me. Not a serious contest’er or DX’er.

I have a SteppIR DB-18E on a MA-770 so I use the doublet mainly on 160 & 80/75.

Cheers,
Kim - K7IM

Sent from my iPad

> On Sep 3, 2020, at 13:26, Lyn Norstad <Lyn at lnainc.com> wrote:
> 
> Adrian -
> 
> Comment on the BD #4116 "hybrid" balun:  
> 
> It's a combination 4:1 impedance transformer and 1:1 current balun all in one unit.
> 
> I am using that on my 360' center fed EDZ (with 160' true ladder line and 15' coax) and it combines to give my KPA/KAT500 a match of 1.2:1 or less (mostly less) SWR across all bands 160-6m. 
> 
> 73
> Lyn, W0LEN
> 
> 
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Adrian
> Sent: Wednesday, September 02, 2020 9:37 PM
> To: w5sum at comcast.net; Elecraft
> Subject: Re: [Elecraft] UPDATE KPA1500 on 160M
> 
> Ok on that. I have good success with true OCF (not windom) antennas and 
> Balun Designs 4:1 current baluns in the past.
> 
> These days I just use apex high delta loops with direct feed via a 
> lmr240 multi-wound toroid choke at feedpoint for great results.
> 
> Bottom corner fed (vertically polarised), so feed-line length and losses 
> are kept minimal . I find this type of antenna very quiet,
> 
> and neighbour friendly in all respects.
> 
> 
> It would have been interesting to see how a 4116 performed on yours.
> 
> 
>>> On 3/9/20 11:37 am, w5sum at comcast.net wrote:
>> 4114T was the BD Balun model #.  I'm not putting down there product at
>> all. When strictly using the ATU in the K3 it matched wonderfully.    
>> The fly in the buttermilk was when the KPA1500 was thrown into the mix.
>> Ronnie
> ______________________________________________________________
> \ 
> 
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to k7im at icloud.com