My experience with other tube rigs (and tuners) being used on 30M is that
sometimes the tuned circuits do indeed swing far enough (from either 20M or
40M positions). However, the Q is always wrong and you either end up
either too sharp or too shallow. Best to leverage the higher band (20M)
and switch in some additional capacitance with a relay. It will be easy to
back out that mod later with no traces.
On Tue, Jun 28, 2016 at 10:14 PM, Steve Ireland <vk...@arach.net.au> wrote:
> I’ve got a Drake 2NT and 2B, which am in the process of refurbishing.
> With the decline in solar activity, I was wondering if anyone had found
> ways to use them on the 30 m band?
> Maybe the 2B just needs relatively straightforward crystal addition, but
> the 2NT looks like an extra coil would need switching into the anode
> circuitry of the 12BY7A and potentially another tap put in place on the
> 6HF5 PA tank coil (am wondering if the 7MHz or 14MHz tank coil tap would
> tune there?).
> Any information would be much appreciated.
> Vy 73
> Steve, VK6VZ
> Drakelist mailing list
Drakelist mailing list