[TenTec] Cheap Ferrites (was Orion reset)

Thu Jan 27 18:17:38 EST 2005

I got mine too. I think they will make excellent weights for my sling shot 
when I get ready to put up that next wire.

Steve N4LQ
----- Original Message ----- 
From: "A. Sewell" <n5na at att.net>
To: <tentec at contesting.com>
Sent: Thursday, January 27, 2005 3:10 PM
Subject: Re: [TenTec] Cheap Ferrites (was Orion reset)

>I ordered a bag of these ferrites too.  When I received them I tested them 
>per K0BG's procedure at http://www.k0bg.com/beads.html.  I don't know what 
>mix they are but they are definitely not 43 or 31.  With five turns thru 
>the bead I get a resistance of ~140 and an inductance of 11 uH.  If they 
>were 43 they should have a resistance of ~500 and an inductance of ~40 uH.
>
> I have tried this procedure on some other ferrite beads I have and I do 
> get the mix 43 values so K0BG's procedure does work.
>
> So, it seems questionable how effective these cheap ferrites beads will 
> be.  Moral of the story....you get what you pay for!
>
> 73,
>
> Alan  N5NA
>
>
> Robert Carroll wrote:
>
>>Try the ferrites.  I include below a note from the RTTY reflector about a
>>cheap source of them.  I just ordered a bag.
>>
>>Bob W2WG
>>**************************************************************************
>>From: rtty-bounces at contesting.com [mailto:rtty-bounces at contesting.com] On
>>Behalf Of Mac McDaniel
>>Sent: Sunday, January 16, 2005 5:36 AM
>>To: rtty at contesting.com
>>Subject: [RTTY] Help with keeping RF out of PC
>>
>>Peter,
>>
>>I sent you an e-mail the other day with a link to a web page that would 
>>help
>>with your RFI.  I was having problems myself at the time that I sent the
>>e-mail to you and was looking for a fix myself.  I was doing everything 
>>that
>>Jim says to do all of his web page at:
>>www.radioworks.com I put two Line Isolators, one between the radio and 
>>amp,
>>and one between the amp and tuner.  I really don't know if they helped me 
>>or
>>not.  Because, my problem was with my computer locking up or going crazy 
>>on
>>me on 80, 40 in 160 meters.  It still did it after I put them on.  I had
>>ferrite beads on some of my equipment for a longtime and they seemed to 
>>help
>>but, they were expensive at RadioShack at $4.95 apiece.  Then I bought 
>>some
>>from radioworks.com at $2 apiece and they seem to help even more.  THEN, I
>>found this on eBay:
>>
>>http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=5743889061&ssPageNam
>>e=STRK:MEWA:IT
>>
>>I got them in the mail a couple of days ago.  They were shipped superfast 
>>by
>>this guy.  I started clamping them on every cord on the back of my 
>>computer,
>>monitor, mouse and keyboard.  Two or three of them on every cord there 
>>was.
>>I had 100 of them and I was on a mission.  I had about 25 ferrite beads on
>>my radio's and knew they were working.  I was just tired of paying so much
>>for them.  I used about 20 on my computer and still have about 80 left.  I
>>was on 80 and 160 this evening playing with the contest.
>>I didn't pay much attention to any thing because I was running low-power.
>>But, then Easter Island came on and I kicked the amp on.
>>About 1200 watts and my computer didn't do a thing.  I was shocked!  No
>>lockups!  No windows popping up!  So, I played more.
>>As far as I can tell the ferrite beads took care of the problem but, I am
>>still in the experimental stage.  I'm going to clip the rest of them one
>>everything in the shack.  The wife and kids better run!
>>
>>Well, it's 4 a.m. in the morning and I'm shot.  I just had to pass this on
>>to you.  I thought it was a great deal.  100 ferrite beads for $27.  And
>>hopefully no more RFI problems.  But I'm sure that Murphy is still running
>>around here somewhere.  I'm going to put a ferrite core around his neck.
>>.
>>I am in no way affiliated with radioworks.com or the guy that sells these
>>beads.  I'm just excited!
>>
>>Good luck and may we have a RFI free 2005.  hi hi
>>
>>73, Mac  N0OB
>>.
>>-----Original Message-----
>>From: tentec-bounces at contesting.com [mailto:tentec-bounces at contesting.com]
>>On Behalf Of John Thompson
>>Sent: Tuesday, January 18, 2005 8:48 AM
>>To: tentec at contesting.com
>>Subject: [TenTec] Orion reset
>>
>>I have had the Orion for 7 months.  Its receiver is
>>very immune to overload and adjacent channel
>>inteference.
>>My unit seems to mute on receive or transmit, more on
>>receive, every 2-5 hours during contest operation,
>>requiring master reset, which takes aroun 2.5 minutes
>>with user memory restore.  There were 7 resets for
>>CQWW SSB and CW each. This muting always occurs at the
>>maximum contest rate, and is disruptive.  I think this
>>is the "Achilles heel" for this rig.  It has been
>>suggested to do all keying from the front panel by Ten
>>Tec(disabling th on-board keyer), which does not help.
>> The 1.372 firmware does not help.
>>Any comments?  Do I have a defective unit?
>>73,
>>John K3MD
>>
>>
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