Thanks to all, lots of great input on balun enclosures!
73 Dwight NS9I
On 2/1/2011 11:02 PM, Rroger (K8RI on TowerTalk) wrote:
> On 2/1/2011 9:55 PM, DGB wrote:
>> But now I'm down in Fla., not my home qth of WI!
>>
>> Why are these getting thru and not my recent ones which was a response
>> to K9YC which was and Roger may be able to answer?
> Who knows? Your ISP might be doing some maintenance, have a problem,
> some one some where the stuff has to go through has a problem...
> "Sometimes" you can do a tracert to see the route and the delays along
> each section.
>> is it acceptable to enclose it in a non-conductive enclosure, on a
>> multiband antenna, say resonant on 160 or 80, especially at high power
>> (1500w)?
> Usually. The AV640 has a 4:1 balun AND a current balun enclosed in a
> plastic box and I've run it well beyond the ratings. They said 200-300
> watts on six and I ran 800 to it for some months.
> I ran the legal limit on CW and SSB to it and I tend to be long winded.
> They only use two cores for each balun.
> I'd think the same approach would work for the G5RV although I prefer to
> see the enclosure have a bit more air flow.
>
> "I think" which means I don't really know, that you might be more likely
> to have voltage problems than heating unless running a LOT of power.
>> in reponse to Jims comment
>>
>> You can roll your own for about $10 that will be FAR better than
>> anything you can buy at any price. See Fig 48 and the Choke Cookbook in
>> http://audiosystemsgroup.com/RFI-Ham.pdf Use the version of the choke
>> would with bifilar turns of #12 THHN (ordinary house wire).
>>
>>
> I'm using 5 or 6 cores with 5 or 6 turns of LMR-400 or Davis
> Buryflex(TM) on current baluns in my systems so they are running more
> like $40 each. (6 and 6 for 160, 5 and 5 for 75-40, 5 and 5 for the
> C19XR. I'm planning on 4 by 4 for the 7L C3i on six. and probably 5 X 5
> for the WARC 7 as well as the 40M3. None of these are or will be
> enclosed, but rather hang out in the elements as they consist of RG-8
> size coax.
>
> 73
>
> Roger (K8RI)
>> de ns9i
>>
>> On 2/1/2011 8:49 PM, Mike wrote:
>>> Works fine for me within seconds, all posts from Wisconsin are moderated
>>>
>>> -----Original Message-----
>>> From: towertalk-bounces@contesting.com
>>> [mailto:towertalk-bounces@contesting.com] On Behalf Of DGB
>>> Sent: Tuesday, February 01, 2011 6:30 PM
>>> To: towertalk@contesting.com
>>> Subject: Re: [TowerTalk] Balun for G5RV
>>>
>>> Who is the moderator or ruler of this list ? Why is it my replies don't
>>> come out on this reflector till hours later .... sheesh ... moderator
>>> review?
>>>
>>> de ns9i
>>>
>
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