160m: [Collins] Crystals

[Heinz und Hannelore Breuer]

Hi Ean,

neither the receiver circuits not the transmitter circuits will resonate
anywhere near the 160m band. You would have to change coils and/or add
capacitors which will probably not be worth the effort. To switch in and
out these various circuits would be the main problem.
One possibility might be building a transverter and use the transverter
output of the KWM-2. The receiving part could be as simple as a single
NE-602 integrated circuit, a bandfilter and a xtal. The transmitting
part is a bit more complex and depends on how much power you want. It
could be solid state or tubes (or do you have valves in South Africa?).
All should fit nicely into a 516F-2 cabinet... Well another project! :-)

73
Heinz DH2FA, KM5VT


Ean Retief wrote:
> 
> ==============================================================
> P.J. (Ean) Retief - DURATEL CC, c/o HALLIBURTON - CONGO
> Office Tel: +44 1224 75-6850, +1 281 983-4982 or +242 94-2893
> Extension 1139      Facsimile:  +44 1224 75-6851 or +242 94-2167
> A/h: +242 94-2714 [Room nr 18]  Alt. E-Mail: Retief at Duratel.co.za
> ==============================================================
> 
> WD6HDY DE ZS1PR/TN
> 
> I see that Surplus Sales of Nebraska has crystals in the $ 4 to $8
> price range that should fit the bill.
> 
> Now I have a question (two actually), either for you or anybody
> else in the forum:
> 
> 1. I run two KMW-2A's at home (Cape Town) - These were
>     not originally designed for operation below 3 MHz.
> 
>     How sucsessful do they operate on 160 metres?
> 
>     I am thinking Power output and Rx sensitivity.
> 
> 2. I assume trying to tune my 30L-1 to 160 would be a no-no?
> 
> 73,
>      Ean (Pointe Noire)
> 
> >From: Richard White <wdsixhdy at pacific.net>
> >To: collins at mailman.qth.net
> >Subject: [Collins] Crystals
> >Date: Fri, 28 May 2004 11:23:45 -0700
> >
> >You might try Surplus Sales if Nebraska
> >I bought some 160 crystals from them about a year ago at a reasonable
> >price.
> >Richard WD6HDY
> >
> >
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> >Collins at mailman.qth.net
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