Jim and Ed: Jim's information is spot on, and no matter what the situation,
there is a lot of useful information. However, one of the things Ed needs
the transformers for is to soften the DC switching pops that occur when he
switches microphones between radios. While there may be better and more
elegant methods to solve this, the transformers work. .--73, Mike WV2ZOW
On Thu, Jun 25, 2015 at 4:25 PM, Pete Smith N4ZR <n4zr@contesting.com>
wrote:
> But... many of us live in older houses, with iffy wiring and long
> distances among entrances of various services, making the sort of bonding
> you call for a major undertaking. By comparison, a couple of 5-buck
> isolation transformers make a lot of sensefor the particular purpose Ed
> described.
>
> 73, Pete N4ZR
> Download the new N1MM Logger+ at
> <http://N1MM.hamdocs.com>. Check
> out the Reverse Beacon Network at
> <http://reversebeacon.net>, now
> spotting RTTY activity worldwide.
> For spots, please use your favorite
> "retail" DX cluster.
>
>
> On 6/25/2015 11:33 AM, Jim Brown wrote:
>
>> I suggest that anyone who believes they need isolation transformers study
>> my tutorial on Power, Grounding, and Audio. All that is needed is simple
>> good engineering practice for power distribution, equipment bonding, and
>> grounding.
>>
>> http://k9yc.com/GroundingAndAudio.pdf
>>
>> 73, Jim K9YC
>>
>> On Thu,6/25/2015 7:20 AM, Ed Sawyer wrote:
>>
>>> In my case - I found that separate isolation transformers were need on
>>> each
>>> channel L/R to make it noise and "click free" as I changed radios.
>>>
>>
>> _______________________________________________
>> CQ-Contest mailing list
>> CQ-Contest@contesting.com
>> http://lists.contesting.com/mailman/listinfo/cq-contest
>>
>>
> _______________________________________________
> CQ-Contest mailing list
> CQ-Contest@contesting.com
> http://lists.contesting.com/mailman/listinfo/cq-contest
>
_______________________________________________
CQ-Contest mailing list
CQ-Contest@contesting.com
http://lists.contesting.com/mailman/listinfo/cq-contest
|