Re: [Elecraft] K2 Poor sensitivity

Nice work Paul. Brian KB1VBF Sent from my iPad > On Sep 30, 2016, at 10:41 AM, Radiobeamer wrote: > > Hi All, > > Firstly, thanks for all of your help. I checked the RFCs on the SSB board > as per Steve's suggestion and they were OK, although my problem was quite >

Re: [Elecraft] K2 Poor sensitivity

Hi All, Firstly, thanks for all of your help. I checked the RFCs on the SSB board as per Steve's suggestion and they were OK, although my problem was quite similar (see below). Also, thanks to Frank for your suggestion. As I'm in the UK it is quite cost prohibitive to send the radio to Don.

Re: [Elecraft] K2 Poor sensitivity

Hi John and Don, Thanks for your responses. Very useful information. for John: Thanks for the link. I'm not sure that my ears really understand what a 30dB S/N ratio sounds like but for sure with well over 1uV input (which is -107dBm) I was not getting what I think of as 30+ dB S/N. With the

Re: [Elecraft] K2 Poor sensitivity

Paul, If the sensitivity was OK before adding the KSB2 option, then the KSB2 is the most likely cause. Remove the KSB2 and put a bent wire jumper between pins 1 and 3 of both J9 and J10 and see if the sensitivity improves. If so, re-flow the soldering on the KSB2 board, check the diode

Re: [Elecraft] K2 Poor sensitivity

Hi Paul, There is a procedure for estimating MDS documented in the XG3 manual, the "Measuring Receiver Sensitivity" section: http://www.elecraft.com/manual/E740154%20XG3%20Owner%27s%20Manual%20Rev%20D2%20-%20ECO%2001887.pdf I've performed this test and found my K2 to have a reasonable match.

[Elecraft] K2 Poor sensitivity

Hi group, I bought a used K2 some time ago. I've not used it much but it seemed to work fine. I recently upgraded it with the SSB option and the 60m/transverter option. I had to go through the BFO re-alignment procedure in order to make the filters work properly after installing the SSB