[R-390] Antenna balun

William J. Neill wjneill at consolidated.net
Wed Jul 20 14:01:23 EDT 2011


Take a look at the other items being offered via eBay by this person.

Bill Neill
Conroe, Texas


On Jul 20, 2011, at 12:52 PM, Tisha Hayes wrote:

> Finding the coax and connectors is pretty easy. It is the same stuff that
> was used on IBM ThickNet connections in the bad 'ol mainframe days. Looking
> for it as a radio supply will not yield any results or will show folks who
> know that it can be used for the R-390/A and they charge an arm and a leg
> for it. Surplus IT places will practically beg you to take it away.
> 
> Tisha
> 
> On Wed, Jul 20, 2011 at 12:48 PM, rbethman <rbethman at comcast.net> wrote:
> 
>> The quality indeed looks VERY good, BUT then You'd have to buy one for the
>> antenna AND one for alignment.
>> 
>> It seems that the alignment for 50 Ohms, AND connect a 50 Ohm feed-line is
>> simpler and cheaper.  I certainly have NOT found ANY of this twin-ax, and
>> don't have a balanced feed-line, nor a dipole that exhibits a 120 Ohm
>> impedance.
>> 
>> Just my $0.02!
>> 
>> Bob - N0DGN
>> 
>> 
>> On 7/20/2011 1:21 PM, Tisha Hayes wrote:
>> 
>>> Really interesting item. Looks like it is grade A build quality
>>> 
>>> 330590619004
>>> 
>>> 
> 
> 
> -- 
> Ms. Tisha Hayes/ AA4HA
> -
> *"Learning is not virtue but the means to bring us an acquaintance with it.
> Integrity without knowledge is weak and useless, and knowledge without
> integrity is dangerous and dreadful. Let these be your motives to action
> through life, the relief of the distressed, the detection of frauds, the
> defeat of oppression, and diffusion of happiness."  -- Nathanael Greene*



More information about the R-390 mailing list