[Elecraft] Chinese Filters on eBay

[Michael Walker]

If are willing to invest $50, then go ahead.  He does have a return policy.

Next, I would buy, beg, borrow a VNA and sweep them.  That is the only way
to be sure.   It is hard to read his scans/sweeps.  They Q factor looks a
little soft, but usable.

If the soldering is poor, that is an easy fix.  Just redo them.

I'm sure they will work ok.  They won't do any damage to your radio.  But,
you normally do get what you pay for.

Mike va3mw



On Wed, Nov 2, 2016 at 1:12 PM, Petr, OK1RP/M0SIS <indians at xsmail.com>
wrote:

> Hi,
>
> http://elecraft.365791.n2.nabble.com/IF-Crystal-filters-
> on-eBay-td7623489.html
>
> http://www.ebay.com/itm/250Hz-CW-Crystal-Filter-for-
> Elecraft-K3-with-8-crystals/201694670061?_trksid=p2047675.
> c100010.m2109&_trkparms=aid%3D555012%26algo%3DPW.MBE%26ao%
> 3D2%26asc%3D39007%26meid%3D95e7b876ede4444faca007d53c5e
> 8eb0%26pid%3D100010%26rk%3D3%26rkt%3D6%26sd%3D172338045381
>
> Even although I did not measured them or even touched I am not recommending
> to purchase these filters. Even the soldering quality is giving a hint
> about
> the overall quality. You do not know anything about the used xtal's cuts,
> their parameters, matching in filter etc. The QC will be zero (as always in
> Chinese junks), return postage is higher than price itself. It is
> "ex-gratia
> problem" purchase...
>
> My 2c add...
>
> 73 - Petr, OK1RP
>
>
>
> -----
> http://ok1rp.blogspot.com
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> View this message in context: http://elecraft.365791.n2.
> nabble.com/Chinese-Filters-on-eBay-tp7623774p7623775.html
> Sent from the Elecraft mailing list archive at Nabble.com.
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