[ARC5] RBA-1 - Field Change #3.

[Mike Feher]

Hi Bill -

I know and assumed Ken just made a mistake there, which I myself have done
in the past and probably will again in the future. Regardless, that does not
negate the other things I mentioned. 73 - Mike 

Mike B. Feher, N4FS
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960 


-----Original Message-----
From: ARC5 [mailto:arc5-bounces at mailman.qth.net] On Behalf Of Bill Cromwell
Sent: Wednesday, June 17, 2015 1:10 PM
To: arc5 at mailman.qth.net
Subject: Re: [ARC5] RBA-1 - Field Change #3.

Hi,

Ken made the same mistake I once did but he hit send and I noticed before I
did that. On a mail list that covers VLF through 160 meters somebody made
mention of a signal on 17 meters with an18xx frequency quoted, I overlooked
where the decimal happened to be (18.xx) and was going to question but while
I was reviewing just before hitting send I saw my error.

Yes there is a big difference between 500 Hz and 500 kHz. Ken might not have
made that mistake if it was properly posted of 500 cps instead. No mistaking
500 cps for 500 kc <grin>

73,

Bill  KU8H


On 06/17/2015 12:34 PM, Mike Feher wrote:
> Yes, a mere "500 kHz" as you put it is a large change. However, 500 Hz 
> is not, and, it is on the low band of the receiver's band selection. 
> Even percentage of BW wise it is a nit. I have not looked at my RBA 
> downstairs, but, I would not be surprised that it would already tune 
> down 500 Hz below the 15 kHz bottom limit as it is, without CN-3. 
> Remember, data rates at those frequencies were pretty slow due to the 
> high Q at the transmitters, so modulation bandwidth did not take up 
> much space. I really doubt that they were using 30 WPM down at 15 KHz. 
> Just the rise and fall times of OOK at that rate would not be passed 
> down there and all the characters would just blend together as they 
> would be essentially integrated. 73 - Mike
>
> Mike B. Feher, N4FS
> 89 Arnold Blvd.
> Howell, NJ, 07731
> 732-886-5960
>

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