Wasn't that rig designed well before the WARC bands frequencies were known? Pretty hard to predict the future, look at the rigs that had 11m as standard on them in 1957. 73, Stuart K5KVH
No sorry I did not mean to be unclear about the PTO. You have a mechanical bearing that causes the tuning to be "stiffer" than a capacitor tuned VFO. The core may not be threaded, but it is a shaft t
Probably as others have stated, the effect of tight tuning in one direction is the spring action. Maybe you have a burr on the spring. If you can get some Caig deoxit product to the interface that ma
This is what my reply comments said: Note the reference to the recent power outage as another reason to not allow another add on to present over taxed power lines. 73, Stuart, K5KVH "In reply to the
Vince, Most of the 20 foot and longer fiberglass fishing poles suggested, would not support a heavy center insulator and line isolator. I would suggest a modest insulator, and taping the line isolato
Thanks Alan, The first reference looks very promising for those who need to hold some weight at the top of a pole! That first one is the only one I had time to inspect, but Vince should look into all
That is consistent with the tuner measurements article in QST some years back. Murch was a rugged component tuner. Still good if you can find one. Most tuners are limited by goodness of the balun. Fo
Murch tuner failed? Maybe you had the smaller model. I have seen a giant one, and a smaller box. I was thinking the larger one was being referenced as they are common in ham fests here, but not the s
An interesting observation is that Roy Lewallen, noted QRP author and Antenna program author, has now on his web site, a retraction of his former suggestion that it was better to put the balun at the
It is definitely conservatively rated, as it was rated for 250 watt AM rigs, where the carrier is 250 watts and modulation ups that. Stuart K5KVH The matching range has variously been reported to be
Jerry, Very useful and insightful comments on baluns, tuners and feeding balanced antennas! My recent field day experiment with external vs. internal balun was only a surprise in that no heating had
A simple mod to the Ten Tec T kit ground tuner converts it to a transmatch of the L network type. It is normally a series variable L , fixed series C (switched values). A bit backwards to most L tune
I have the older Autek RF -1 and the MFJ 269. The 269 has the 440 and 2m as well as HF, but is heavy and certainly a bit unwieldy to use on a tower. The Autek HF and VHF models are shirt pocket sized