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Date: Thu, 11 Feb 2010 17:56:13 +0000
Message-ID: <9e6eddd01002110956h3861cb65h51e4f2d9ef4e89dc@mail.gmail.com>
From: Dominic Baines <dominic.baines@gmail.com>
To: rsgb_lf_group@blacksheep.org
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Subject: Re: LF: New NoV
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Two RX options.

FT817 and a 500KHz SDR RX (modified Softrock Lite V6.2 for 160m)

TX options.

Had built a M0BMU TX PA unit long time ago (but never added PA
MOSFET's) as no NoV at the time.

I have both ceramic osc (either 4/8MHz), a  FCC1/FCC2 AD DDS, K5BCQ
Si570 DDS or AMQRP DDS-60 all that can be fed into a 4020 or 4060
divider to obtain 501-504KHz signal. Then into 4427 and M0BMU TX or a
two stage 2N3904 buffer and then PA.

I have an 11W (at 160m) bipolar transformer PA that could be used as
well as a couple IRF50 options.

Been sent a copy of the GW3UEP schematic which is another 4/8MHz
oscillator and divider/pa stage.

I might, If you know the ECL82 glowbug circuit I was going to try and
recreate using an ECL84 (triode/pentode) and grind a 500KHz crystal.

Expect will be keying things manually initially, QRS, as per xband
80m/500KHz qso from 2008, so sql cards hopefully.

Ant will be inverted L with 10m vertical section and c40m horizontal.

VSWR meter almost complete as located some 3C85 toroids and some
2SC2166 for the PA so maybe a Marathon???

7 pole LPF ready.

72

Dom
M1KTA


On 11 February 2010 17:04, Graham <g8fzk@g8fzk.fsnet.co.uk> wrote:
> Congrats , Dom
> Bands =A0a =A0bit =A0full these =A0days , but always =A0room for =A0one=
 more ..hi
> What tx system are =A0you using ?
> 73 , Graham ,
> --------------------------------------------------
> From: "Dominic Baines" <dominic.baines@gmail.com>
> Sent: Thursday, February 11, 2010 3:02 PM
> To: "rsgb lf group" <rsgb_lf_group@blacksheep.org>
> Subject: LF: New NoV
>
>>
>> Hi all,
>>
>> I just RX my SRP/NoV for 501-504kHz.
>> Hope to have my station up and running for TX as soon as possible.
>> Thanks for all those who since 2008 have so far had a cross band qso
>> perhaps we can manage a qso on 500kHz now.
>> Will focus on CW initially.
>>
>> 72
>>
>> Dom
>> M1KTA
>>
>>
>
>
>
>