Topband: 160M JT65HF

[Joe Subich, W4TV]

On 12/30/2011 11:22 AM, David Michael Gaytko // WD4KPD wrote:
> almost every night and especially on weekends/holidays, there is alot
> of activity on 1838/usb. some qrm from psk/other but they usually are
> far enough from the center freq not to be a problem (not always, the
> jt program only shows +/-1kc on the waterfall. do wish they would
> give at least .500kc guard band)

A technical clarification ... although JT65 users will specify USB
carrier (dial) frequency, the software uses a nominal 1270.5 Hz sync
tone with activity spreading +/- 1 KHz.  The actual occupied spectrum
would be approximately 1838.270 to 1840.500 KHz.

Most JT65 activity is relatively low power - typically between 10 and
50 watts on HF.

73,

    ... Joe, W4TV