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Submitted by cecil.bayona on Thu, 05/24/2007 - 11:22.

To:
From: "Tony Parks"
Subject: Re: [softrock40] Re: RXTX Frequency is wrong

Hi Bob,

Is your kit a 40m/30m kit or a 40m/80m kit? If it is a 40m/30m kit (yellow cores for winding the inductors) then the 30m crystal is a 40.5 MHz crystal. If you have a 40m/80m kit (red cores for winding the inductors) then you should have a 28.224 MHz and a 28.06 MHz supplied with the kit.

Thanks and 73,
Tony KB9YIG

To:
From: "Tony Parks"
Subject: Re: [softrock40] SR v6.2 layout

Hi Benny,

The ICs that mount on the bottom of the v6.2 SoftRock Lite board are such that if an IC provided in the kit fits a location then it is the right IC for that location. Look for the small "1" marks in the bottom-side copper. The pin one corner of an SOIC part is the lower left corner when the writting on the IC can be read upright from left to right.

Yes, the nine 1206 capacitor locations are for the 0.1uF SMT capacitors provided in the kit.

73,
Tony KB9YIG

»

Dead Oscillator on RXTX6.2 40/80 Conversion Kit

Tony:
I have converted my 30/40 kit to 40/80 kit with new coils and caps and resistors that you sent me in the conversion kit. According to the instructions I have omitted installation of C44 and R59 and am using the 28.06 & 28.224 Mhz crystals. However, I see no oscillation on either of the crystals. Some advice and voltage levels at different locations of the oscillator circuit will be highly appreciated. I have found some information for 30/40 Kit but measuremts for 40/80 Kit includes the C44 and R59 in the circuit. Do I need to install them or provide a jumper at their locations, etc.?

Thanks & 73's
Rif
WB2AFA

»

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