Re: [IRCA] Recent logs from Moody, Texas

["Neil Kazaross" <neilkaz@xxxxxxxxxxxxx>]

Yes..I recall using 10 turns for the xfmr I made for a KAZ antenna a few 
years ago and then mod for BOGs.  73 KAZ
----- Original Message ----- 
From: "Chuck Hutton" <charlesh3@xxxxxxx>
To: "'Mailing list for the International Radio Club of America'" 
<irca@xxxxxxxxxxxxxxxx>
Sent: Monday, January 08, 2007 10:56 PM
Subject: Re: [IRCA] Recent logs from Moody, Texas


> James:
>
> The -43 core is recommended down to 1 MHZ and declines in performance just 
> a
> little down to .5 MHZ so you should not have a fatal problem with the 43.
>
> What you do need is a more turns of wire. You need a minimum of 10 turns 
> on
> the rx side and 30 on the antenna side for a -43 core at .5 MHZ. That's a
> fair bit of wire to wind. Because of that, and because the losses are a
> little lower, people use 73 or 77 cores for medium frequency work where 
> you
> need. For a simple, guaranteed-to-work transformer, take a look at
> http://www.w8ji.com/core_selection.htm then scroll down to the Beverage
> matching transformer. You'll need to change the number of turns on the
> antenna side so that there are about 8 turns.
>
> With your 6 turn winding, you have about a 66 Ohm winding across your
> receiver input so basically half the signal is getting lost at .5 MHz. 
> Does
> that match up with what you mean when you say it is "dead"?
>
>
> Chuck
>
> -----Original Message-----
> From: irca-bounces@xxxxxxxxxxxxxxxx [mailto:irca-bounces@xxxxxxxxxxxxxxxx]
> On Behalf Of James Niven
> Sent: Monday, January 08, 2007 6:03 PM
> To: Mailing list for the International Radio Club of America
> Subject: Re: [IRCA] Recent logs from Moody, Texas
>
> Hi Craig,
> On each antenna there is a 9:1 matching transformer with 6 turns on the
> receiver side and 18 turns on the antenna side. The terminating resister 
> is
> 680ohms. The toriod is FT-114-43 purchased from Amidon. Each antenna is 
> feed
> with 4 separate RG6 runs to a 4 position rotary switch.
>
> Thanks
>
> James Niven
>
>
>
> ----- Original Message ----
> From: C B <bevdxer@xxxxxxxxx>
> To: Mailing list for the International Radio Club of America
> <irca@xxxxxxxxxxxxxxxx>
> Sent: Monday, January 8, 2007 7:48:29 PM
> Subject: Re: [IRCA] Recent logs from Moody, Texas
>
>
> Hi James,
>
> Did you equip your EWE with an impedance matching
> transformer and a terminating resistor?
>
> Craig Barnes
> Wondervu, CO
>
> --- James Niven <niven43@xxxxxxxxx> wrote:
>
>> Hi All,
>>
>> After working on my EWE antenna 10x50x10 in the
>> spade of a + sign, this is 4 antennas. It works very
>> well on frequencies above 1350khz and very
>> directional.
>> Before the EWE was commissioned, I was using a 300
>> foot longwire pointing south.
>>
>> On 1570khz XERF justs booms in with a monster
>> signal. Now with the EWE, I am able to knock down
>> XERF and I logged KSXT in Loveland CO last night.
>> Tonight I heard a country station with a slogan as
>> "Country Legends 15-70". It just disappeared like
>> changing to night pattern. Anyone know who this may
>> be?
>>
>> On 1600khz I logged KRKE in Albuerque, NM before
>> changing to night pattern with rockin Oldies, nice
>> signal.
>>
>> I am not sure why the EWE is not working on the
>> lower part of the band, it appears to be dead.
>> Anyone offer some suggestions?
>>
>> Thanks
>>
>> James Niven,
>> Moody, Texas
>>

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