[R-390] Baluns Caps and Ballasts

[rbethman]

I mistakenly screwed up the reply and only sent it directly back to Dennis.

That was NOT my intent!

Seeing that this Individual only has 115 (Approximately) feedback, and 
NO ONE on the list has one, HOW much weight do YOU give to this balun?

Everyone seems to be dodging the whole thing!  It isn't in hand YET!

I learned a LONG time ago about ASSUME.  We ASSUMED the *BAD LOT* of 
40mm M-79 ammunition was GOOD - UNTIL it armed in 3 meters and went off 
directly overhead!

Assume if you wish.

The only thing I *DO* know, is that the test equipment supplied for the 
R-390As did NOT include such a device.

BAMA EDEBRIS has the formerly stated pdf.  It is under the Military 
section, and is listed way over on the right simply as URM25 - NOT 
AN/URM-25(X).

I would gather that some folks ASSUME a weapon is UNLOADED!

I won't take one into MY hand unless it is OPENED and CLEARED before it 
is offered for me to look at!

Correspondingly, I perform the SAME before offering a weapon to someone 
to look at!

Bob - N0DGN

On 7/20/2011 7:50 PM, Dennis Wade wrote:
> Why would you not feed the 50 ohm unbalanced generator through the
> balun for alignment, assuming you had confidence in the balun?
>
>                Dennis
>
> On Wed, Jul 20, 2011 at 4:02 PM, rbethman<rbethman at comcast.net>  wrote:
>> ONLY *IF* you do an alignment with a 120 Ohm signal generator.
>>
>> Do you see a 120 Ohm terminator/dummy antenna with the AN/URM-25 series?
>>
>> Sure wasn't part of the parts included.  Darn sure isn't in the NAVSHIPS
>> Manual either.
>>
>> NAVSHIPS 0967-187-5010.pdf (A 35MB file.).
>>
>> Bob - N0DGN
>>
>>
>>
>> On 7/20/2011 6:53 PM, Dennis Wade wrote:
>>> Isn't the whole point of the balun to convert the *unbalanced* 50
>>> ohms to the *balanced* 125?? Doesn't that solve the problem,
>>> assuming one feeds the antenna properly, that is if feeding a
>>> balanced antenna (dipole) with coax using some sort of choke or
>>> other type of balun to keep symmetry.               Dennis