[Elecraft] Coax Loss Figures

Pete Smith n4zr at contesting.com
Wed Jun 23 05:13:26 EDT 2010


This reflector has more off-topic posts than any I've ever been involved 
with.  Perhaps the solution (other than the delete key) would be for 
people not to reply.

73, Pete N4ZR

The World Contest Station Database, updated daily at www.conteststations.com
The Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com,
spots at telnet.reversebeacon.net, port 7000


On 6/23/2010 3:19 AM, Brett Howard wrote:
> Yea I know I'm going way overkill and I was doing all the calculations
> by hand of total loss and at a 7:1 SWR (which is entirely possible on
> this 43 ft vertical) the loss at 30Mhz can get kinda ugly... I've not
> modeled it fully but on all bands but on 20 meters its 7:1 and on 40
> meters its 3:1...
>
> I think I'm just going to call it a day and use the LMR400...  But its
> fun to overthink this stuff...  Article looks nice I can see I'm going
> to be up for a few more minutes! ;)
>
> ~Brett (N7MG)
>
> On Tue, 2010-06-22 at 23:34 -0700, Jim Brown wrote:
>    
>> Check out
>>
>> http://audiosystemsgroup.com/Coax-Stubs.pdf
>>
>> 100 ft of almost any decent RG8-size or RG11-size coax is just fine for a
>> Field Day antenna on the HF bands. On the lower HF bands, RG8X-size coax is
>> just fine.
>>
>> 73, Jim K9YC
>>
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>      
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>
>    


More information about the Elecraft mailing list