Re: LF: Re: Power experiment / Mini Whip / 8970 Hz !

[Graham <planophore@aei.ca>]

A quick search finds BFQ19 and BFQ19S with different specs.

Can a BFQ19 be substituted for a BFQ19S or are they very different?

cheers, Graham ve3gtc



On 12-03-25 02:45 PM, Roelof Bakker wrote:
> Hello Peter,
>
> I found that a BFQ19S gives slight better strong signal handling 
> performance.
> But more important, it works better at a lower supply voltage.
> So, for use with a 9V battery, the BFQ19S is recommended.
> At 12V you will not notice any difference.
>
> You could also try to feed the antenna direct from a battery by a 
> separate two wire DC cable, instead of over the coax cable.
> In this case the antenna interface can be omitted.
> It is best to place the battery at the foot of the mast.
>
> There are more options, like using CAT5 cable, isolating transformers 
> etc.
> However, it all depends on your specific location.
>
> 73,
> Roelof, pa0rdt