Ahti and Frank, Sorry, I did not mention that I installed the microgap absorber between antenna input of the RFE board and said voltage transients protective diode on the RFE board. I think nowadays new SDR1000 are already equipped with these diodes while I had to add them according to ECO 001. Remains to be seen how Flexradio protects the SDR 5000 investors against transients.
gl es gn de SM6OMH Willi ----- Original Message ----- From: "Ahti Aintila" <[EMAIL PROTECTED]> To: "Willi Reppel" <[EMAIL PROTECTED]> Cc: "Frank Mayer" <[EMAIL PROTECTED]>; <flexradio@flex-radio.biz> Sent: Thursday, May 17, 2007 11:22 AM Subject: Re: [Flexradio] Low recieve Willi and Frank, The DC Spark-Over Voltage of SA05-C-T52-A-301-M is specified 200V±20% and typically the max. device voltage of the preamps is as low as 5-6V. A properly located microgap surge absorber may prevent big disasters, but still for low voltage transients protective diodes will be needed, too. 73, Ahti OH2RZ On 17/05/07, Willi Reppel <[EMAIL PROTECTED]> wrote: > Hi Frank, > > To protect the receiver of my SDR1000 I stalled ahead of the RF-amplifier > a > microgap surge absorber element in discharge tube. See the below link. > > http://www.koaproducts.com/english/catalogue/sa.htm > > It may be the right opportunity to install one of these when you unpile > the > board stack of the SDR1000 for repair. > > gl de SM6OMH > > Willi > > > > ----- Original Message ----- > From: "Frank Mayer" <[EMAIL PROTECTED]> > To: <flexradio@flex-radio.biz> > Sent: Thursday, May 17, 2007 12:35 AM > Subject: [Flexradio] Low recieve > > _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/
