[Lowfer] 500 kHz. QRSS?

[KD7JYK]

: That's exactly it.  My TS-440 is un-modified with regard to
: the attenuator, so I'm losing about 20 dB because of that.
: The antenna is a Delta loop, 111 ft./side, apex up and
: series tuned.

Did you leave the co-ax connected?  Try disconnecting it, punching the
center pin through a piece of card-stock and sticking just the center pin
into the radio.  It makes considerable difference with my Kenwood, the co-ax
makes a very effective choke.

Kurt