Roger Stacey wrote: > I think not > > WD7F - John in Tucson wrote: > >> And why not? That's six S-units. >> de WD7F >> >> ----- Original Message ----- >> From: <[EMAIL PROTECTED]> >> To: <Repeater-Builder@yahoogroups.com> >> Sent: Friday, November 02, 2007 9:06 PM >> Subject: Re: [Repeater-Builder] Doubling Power Output On UHF Repeater >> >> 3 dB is definitely noticeable on my RXs.
There may be a "standard" reference for S-units, but no one actually follows it. No two radios are the same on that, even within the same model, let alone across models or brands. So to say 3dB is a half an S-unit is only going to be valid for one radio. My experience is that going from 50W to 100W out is more noticeable on lower bands. It makes a considerable difference on 6M, while on UHF it's not noticeable to speak of. I have to believe it has to do with over-the-horizon propagation: While UHF is very line-of-sight, 6M will propagate beyond, and that extra power will carry farther. Another way to look at it-on 6M, it will actually give you more range, where on UHF, it really pretty much just fills in dead spots. I don't think I'm really using the correct terminology, but you get the basic idea. I missed in the original post what band the station in question is on. I would say if it is 6M, it's definitely worth it. On 2M, it's questionable, on UHF and up, it's probably not worth it. I've had better luck getting more "range" on UHF with a higher gain antenna and better feedline. -- Jim Barbour WD8CHL
