Re: Topband: RX splitter - ground common or not?

2012-10-17 Thread Jim Brown
On 10/17/2012 2:10 PM, Tom W8JI wrote: Advice like that must assume some ridiculous amount of common mode impedance I stand by my comments. 73, Jim K9YC ___ Remember the PreStew coming on October 20th. http://www.kkn.net/stew for more info.

Re: Topband: 1810 spur status and resolution

2012-10-17 Thread Gary K9GS
Very interesting and well done. Was it ever discovered what was actually causing the spurious signal? In other words, what did the station engineer do that caused the signal to disappear? Rudy is awesome too! On 10/17/2012 7:00 PM, Don Kirk wrote: Full and final details on the recent spur

Re: Topband: 1810 spur status and resolution

2012-10-17 Thread Don Kirk
Full and final details on the recent spurious signal and how it was located can be found on the following website. http://sites.google.com/site/wgymsignal/ 73's Rick K2XT & Don WD8DSB ___ Remember the PreStew coming on October 20th. http://www

Re: Topband: RX splitter - ground common or not?

2012-10-17 Thread Tom W8JI
The only thing I disagree with about Tom's advice is that, with the exception of a VERY large string of #73 beads (at least 100 beads), beads are useless on HF, and even those are not very useful at 2 MHz. Advice like that must assume some ridiculous amount of common mode impedance being drive

Re: Topband: RX splitter - ground common or not?

2012-10-17 Thread Jim Brown
On 10/17/2012 6:58 AM, Tom W8JI wrote: Use beads over an unbroken shield. The only thing I disagree with about Tom's advice is that, with the exception of a VERY large string of #73 beads (at least 100 beads), beads are useless on HF, and even those are not very useful at 2 MHz. Where Tom r

Re: Topband: RX splitter - ground common or not?

2012-10-17 Thread Tom W8JI
DX Engineering/s RSC-2 splitter appears to have all three antenna terminals connected to a metal case; i.e., the grounds are all connected together. In ON4UNs 5th edition, he appears to recommend that the common connector (the one to the braid-breaker 7:5 matching transformer) not be tied to t