LF: RE: [rsgb_lf_group] JT9-2 test by OR7T

[Rik Strobbe <Rik.Strobbe@fys.kuleuven.be>]

Hello Michael,

 

thank you for the report.

The JT9 setup is very experimental:  a homebrew 4500kHz to 500kHz downconverter (SBL1) followed by a Kalmus-100 wideband power amplifier and a 550kHz LPF. The PA can deliver 10W, but the downconvertor has only drive power for 4W. A 6dB att. between downconvertor and PA = 1 W.

Now I have to figure out a problem in the RX to TX sequence: my TS440 will not transmit below 1.5MHz, so when listening on 500kHz the PTT (or VOX) does not work. I have to switch from VFO-A (500kHz) to VFO-B (4500kHz) by hand before I can transmit.

 

73, Rik  ON7YD - OR7T

 

 

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Van: rsgb_lf_group@yahoogroups.co.uk [rsgb_lf_group@yahoogroups.co.uk] namens Michael Oexner [michael.oexner@web.de]
Verzonden: maandag 29 oktober 2012 22:55
To: rsgb_lf_group@yahoogroups.co.uk
Onderwerp: Re: [rsgb_lf_group] JT9-2 test by OR7T

 

Hello Rik,

> I will do a first JT9-2 test on 501.450kHz (500kHz dial - 1450Hz) for the next hour or so.

> TX output power is 4 Watt (estimated 20mW ERP).

> Reports are welcome.

That's what I got right now:

2148 10 -13 0.4 1454.41 0.00 OR7T 5MW ERP
2150 3 -26 -0.4 1482.59 0.00
2152 4 -25 0.3 1453.76 0.00 OR7T 5MW ERP

--
vy 73 + gd DX,

Michael

RX: ICOM R75, SDR-IQ, Perseus
Antenna: Wellbrook ALA 1530, Mini-Whip
Location: Roschbach, Germany N 49°15' E 8°07' / Locator JN49bf

ENDBH & NANDBH editor

http://ndbchangeblog.blogspot.com

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