[TowerTalk] ICE

[Jim Brown]

On Tue, 09 Dec 2008 10:34:06 -0700, Richard (Rick) Karlquist wrote:

>I bought an ICE model 402 filter.  It arrived promptly, but didn't 
>come close to meeting the specs shown on the web site at:

>http://www.iceradioproducts.com/filtersrf.html#bcb

>It shows about 20 dB attenuation at 1500 kHz.  In fact, it does
>virtually nothing there.  I have a big signal at 1530, so the
>filter was useless to me.  For $28, it looked too good to be true,
>and it was.

Is this on a bench with a generator and calibrated load, or in your 
system?  

I've found ICE to have rather poor QC. I own 8 ICE filters, all but 
three of which I bought new directly from ICE. Only two of the five I 
bought from them were within spec. I own two BCB filters, one bought 
new, one from a hamfest. Both are within spec. About 4 years ago, I 
bought a 6M filter and a 2M filter. Both were out of spec. I returned 
them and they fixed them promptly. Two years ago, I ordered two 419Bs. 
They arrived nearly a year later. One was out of spec. All of my 
measurements were done with a 50 ohm source and 50 ohm termination. 

73,

Jim K9YC