KPA500 defekt, T/R pin diodes, which type, how to change?

classic Classic list List threaded Threaded
2 messages Options
Reply | Threaded
Open this post in threaded view
|

KPA500 defekt, T/R pin diodes, which type, how to change?

dl7jom

We have a KPA500 in our station setup of HU1DL.

After some days of operation (and changing of bands, filters, antennas),
the T/R pin diodes are blown (D8/ D9).

- amplificaton of the RF-input signal works well

- receive level/ noise level in standby is normal

- receive level/ noise level in operate mode in attenuated

Now we are looking for a replacement.

- which type (hope we can buy pin diodes in San Salvador)

- howto change D8/D9 in the KPA500

We also send an email to ELECRAFt support, waiting for response.

73 de Olaf, DL7JOM (member of HU1DL)
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]
Reply | Threaded
Open this post in threaded view
|

Re: KPA500 defekt, T/R pin diodes, which type, how to change?

Don Wilhelm
Olaf,

Your best answer will come from Elecraft support.

73,
Don W3FPR

On 2/3/2020 4:10 PM, [hidden email] wrote:
>
> We have a KPA500 in our station setup of HU1DL.
>
> After some days of operation (and changing of bands, filters, antennas),
> the T/R pin diodes are blown (D8/ D9).
>
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]