[Lowfer] 1750 meter frequency for Part 5?

[Bill Ashlock]

"Some commonly available crystal that can be used with a 4060 oscillator/divider would make it a lot easier. Otherwise you get 
faced with either having to order a custom oscillator or crystal or going the DSS route"

Not totally true Jim. All one has to do is use a common 5.188 microprocessor Xtal in a four component oscillator circuit (probably more stable than the 4060's oscillator)and then divide by 14 and 2 using two std divider chips. At least that's what I do. Far more important is whether or not 187.5 is a good area of the band for Lowfering, from a lack of interference standpoint.

Bill

> From: w4jbm at bellsouth.net
> To: k5wms at centurytel.net; lowfer at mailman.qth.net
> Date: Thu, 29 Oct 2009 03:28:59 -0400
> Subject: Re: [Lowfer] 1750 meter frequency for Part 5?
> 
> > What ever watering hole we pick lets keep in mind the attraction to
> > newcomers of a simple way to get on.
> 
> I have to agree with that. Some commonly available crystal that can be used 
> with a 4060 oscillator/divider would make it a lot easier. Otherwise you get 
> faced with either having to order a custom oscillator or crystal or going the 
> DSS route. To me that changes it from a "simple weekend project".
> 
> It would also make it very reasonable for someone to "kit up" the crystal, 
> 4060, and a couple of pairs of transistors. I've got a PIC programmer and 
> could program the K1EL K8 chip or the PICBeacon (that's the one I use) for 
> anyone who needed it. Or you can order a K12 very reasonably. Or you can just 
> use a 555 chip and build a dasher with some unique dash length.
> 
> I like the idea of a watering hole, but it's just such an offbeat frequency to 
> get to with off the shelf parts. I remember when I first started looking at 
> building a beacon I kept doing the math just certain that the watering hole 
> had to come from some common combination of readily available crystal and 
> common divider.
> 
> I should have my DSS going soon and it will be a moot point. But I do think 
> it's a "barrier to entry" for people interested in building a beacon.
> 
> If you look at the interest in building simple QRP rigs, there's really no 
> reason to think that there shouldn't be more interest in Part 15. But there's 
> got to be some critical mass of 1) xmitters and 2) grabbers.
> 
> 73 de
> Jim W4JBM
> ______________________________________________________________
> Lowfer mailing list
> Home: http://mailman.qth.net/mailman/listinfo/lowfer
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Lowfer at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html