[TowerTalk] Beverage Layout Problem

[David Gilbert]

You're going to have to explain that some more for it to make any 
sense.  The total cable loss for 200 feet of RG-213 at 7 MHz is about 1 
db.  It seems to me that you'd have to have some really horrible 
impedance mismatches for the difference between RG-213 and LDF4 to even 
be noticeable.

The best clue that something is skewed, though, is your comment that the 
noise floor changes a bunch and the signal level not so much. That 
sounds like a termination problem of some sort, or more likely some kind 
of open shield in the RG-213.

73,
Dave   AB7E




On 5/13/2014 6:55 AM, Edward Sawyer wrote:
> Personally, I use my beverages extensively on 40 - 160M and the 200 ft of
> low loss cable would be really important.
>
>   
>
> Also, not sure if you have ever tried this experiment:  Preamp at the radio
> (mine is 20dB for 160 - 20M), 200 ft of RG213 vs 200 ft of LDF4 to a long
> beverage (mine is 2 x 1000ft terminated to EU).  It's a game changing
> difference on noise floor and a little of an add on signal strength.  Most
> people have the pre-amp off and are satisfied that they hear some noise
> floor and therefore the loss doesn't matter.  But kick I a preamp and you
> have often over half of than in noise floor - but I have found that much of
> what you are hearing is the cable, not the beverage itself - if the
> conditions are not super noisy (like summertime).
>
> Try it.  You might be surprised.
>
>   
>
> 73
>
>   
>
> Ed  N1UR
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>