Steve, 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.
Dennis AE6C On Tue, Jun 28, 2016 at 10:14 PM, Steve Ireland <vk...@arach.net.au> wrote: > G’day > > 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 > > > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> > Virus-free. > www.avast.com > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> > > _______________________________________________ > Drakelist mailing list > Drakelist@zerobeat.net > http://mailman.zerobeat.net/mailman/listinfo/drakelist > >
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