In a related question:
What RF level are people driving the Avantek PA's with to get the rated
output?
Thank you,
Greg - K2LDT
PS - I disabled the onboard power supply, and run it with a -12 V and +10.5
V switchers.
kr7o@vhfdx.com writes:
> I am looking at incorporating a 10w Avantek 5.7G and one of the 3.4G
> Toshiba amps into my portable microwave station and I am curious as to
> what other people are using for regulated supplies for the odd and in some
> cases fairly critical voltages needed to power these amps. In the case of
> the Avantek, I am talking about the modified units requiring +10.5v and
> -12v, and of course the 12.6v for the Toshiba amps.
>
> For portable operations I typically use two 12v deep cycle batteries that
> will range in voltage between 11.5v and 13v over the course of the
> discharge cycle. -12v shouldn't be a problem, but I haven't found zeners
> or other voltage regulators of the proper voltage and current ratings for
> the other voltages. 12.6v is even more of a challenge without some sort
> of DC-DC converter (but again I haven't found any surplus converters that
> match the needed conditions).
>
> I could always build an AC power supply for the proper voltages, but then
> I need to carry a potentially noisy inverter (and the overhead necessary
> to power that). Resistive voltage dividers are a possibility, but still
> do not provide the level of regulation that appears to be needed to
> protect these devices, and also waste precious battery stores.
>
> So, what is everyone using to supply these amps. Hopefully I am missing
> something simple here.
>
>
>
>
> 73, Robert KR7O/YB2ARO, DM07ba/OI52ee (ex. N7STU)
> kr7o@vhfdx.com
>
> www.vhfdx.com (Norcal WSWSS activities & KR7O/YB2ARO homepages)
>
>
>
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