[R-390] Baluns Caps and Ballasts

[rbethman]

Tisha, I hope you get some decent numbers using this balun.

However, it is still based upon either an SO-239 or BNC input.

That puts us back to the initial point of a feed-line that is unbalanced.

I have a strong belief that "Flowertime" Roger using AN/URM-25s, a 
TS-505 D/U and a TS-585 has served very well.

I just don't see adding an "extra" item into the antenna string is going 
to make it work better.

Bob - N0DGN

On 7/20/2011 3:50 PM, Tisha Hayes wrote:
> "This is for a US Ham with a FAMILY ONLY operation!
>
> <http://www.hayseedhamfest.com/capkit.htm>
>
> I'd prefer to give Tom my business!
>
> Bob - N0DGN"
> ----------------------
> Unfortunately I did not know about Tom selling caps. About a year ago I
> bought one of the 3FT7 replacements and a set of caps from the same German
> supplier. They have been working out great.
>
> I have seen some homebrew attempts at cap restuffing and then to use epoxy
> to glue the can back on. I had decided that was a route that I did not want
> to go. Nor did I want to spend $60 on some 1960's vintage of an NOS
> capacitor from Surplus Sales of Neb.
>
> I did buy the balun and will try to quantify it's performance on a network
> analyzer once it arrives. I would be interested to see just how linear it is
> across the .5 to 30 MHz range. Many of my low frequency baluns are wound
> with Litz wire but I doubt that this balun will have litz windings and I
> have no idea what core they are using. There does not appear to be a way to
> take it apart.
>
> ----------------------
> I just get "so" excited when someone makes a shiny new part for the R-390A.
> Of course I am not going to jump out of the canoe to buy the burnished,
> polished aluminum one that is up on eBay. I am not that much of a crow<j/k>
> for collecting shiny tidbits in my nest.
>
> My latest infatuation has been with Racal and WJ stuff (I know, traitor!). I
> am still chasing that mystical<140 dBm noise floor demon. The RF-590 "has
> 'spoilt me", now I just want to find a RF-1310 to pair it up with.
>
> I have now officially run out of rack space in the console. For anything
> else to fit, something else has to go. The floor of the lab would not take
> any more "stuff" without me fearing that it collapse down into my dining
> room. It has since lost it's designation as a guest bedroom as well, the
> sofa bed has to come out.
>

-- 
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|               AM Amateur Radio Operator    NØDGN                 |
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| Bob Bethman                \\\|///     " The absence of a danger |
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