[R-390] New Owner

[Roy Morgan]

At 09:30 AM 10/6/2006, Tom Norris wrote:

>On Oct 6, 2006, at 7:20 AM, Dave Maples wrote:
>>I purchased an off-the-shelf Corcom line filter with IEC plug built
>>in and put it in the place of the old filter.
...there isn't such a need for the brute force filtering
>they were originally spec'd for. (IMHO)


Tom,

Has anyone got information handy to compare the filtering specs of the 
R-390A and the common line filters with IEC connector?  If so, please report.

Note: one of the cost reduction points of difference between the R-390/URR 
and the R-390A/URR is in the line filter:

  - In the R-390/URR the filter has an integral connector of substantial 
construction
  - In the R-390/URR the filter has more stages of filtering than in the 
R-390A/URR

One result of this is that a simple adapter plate can be made for the 
R-390/URR to hold the modern IEC type line filter/connector with no holes 
or sawing, whereas in the R-390A/URR, a bit of metal work is needed unless 
the connector is mounted in a little box mounted on the back of the radio.

Lest any of you decide to go looking for a Greenlee chassis punch to make 
the job easy and neat, I understand the new price of the right punch is 
over $200.00.

Roy


- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing
13033 Downey Mill Road, Lovettsville, VA 20180
Phone 540-822-5911   Cell 301-928-7794
Work: Voice: 301-975-3254,  Fax: 301-975-6097
roy.morgan at nist.gov --