On 21 Mar 2018, at 12:00, Leon Zetekoff wa4zlw@backwoodswireless.net wrote:

I beg to differ about range....if we in the WiSP field can go 30-40 or more miles on 5.8 gHz with 1 watt on 430mHz with the right antennas we can definitely do that or more.

Remember this is also spread spectrum so its not like it is a single carrier

More legal troubles… Apart from the obvious problem of taking up a lot of band capacity, encryption is certainly banned on amateur bands. Even if you don’t configure encryption explicitly any access to popular Internet services will be encrypted by default.

Borja / EA2EKH

I played with these cards a while back. They are MEH at best. We tried to replace a product called dragonlink for control of a remote vehicle. 1W will go way, way, beyond line of site.

Ryan N0JEP

-----Original Message----- From: 44Net 44net-bounces+slowgto=outlook.com@mailman.ampr.org On Behalf Of Michael Fox - N6MEF Sent: Wednesday, March 21, 2018 7:51 AM To: 'AMPRNet working group' 44net@mailman.ampr.org Subject: Re: [44net] Wireless lan on 430MHZ ?

He also said mobile, implying omni antennas on both ends.

Michael N6MEF

-----Original Message----- From: 44Net 44net-bounces+n6mef=mefox.org@mailman.ampr.org On Behalf Of Leon Zetekoff Sent: Wednesday, March 21, 2018 4:00 AM To: 44net@mailman.ampr.org Subject: Re: [44net] Wireless lan on 430MHZ ?

I beg to differ about range....if we in the WiSP field can go 30-40 or more miles on 5.8 gHz with 1 watt on 430mHz with the right antennas we can definitely do that or more.

Remember this is also spread spectrum so its not like it is a single carrier

73 Leon wA4ZLw

On 3/21/2018 6:55 AM, Michael Fox - N6MEF wrote:

...

Looking at the channel widths of 5, 10, 20 MHz: You won't have many friends if you take up 5+ MHz of the band.

Looking at the data rates, I'm sure they all exceed the max symbol rate allowed here in the U.S.

As for your range requirement, you won't get much with 1 watt at 440.

Michael N6MEF

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I wonder if the Turn around time on one of the DMR UHF amps would be fast enough to bump the power upto 40 watts or six. Again not possible in the US due to the antiquated symbol rate rule. I think that there is either a petition to change this or a soon to be petition to change the rule. That said changing hats this is the spectrum in the US where ATV operates analog inputs to some repeaters 421.25out 427.25Simplex and 439.25mhz input. Our repeater operated on 427.25 with no audio sub-scarier in repeater mode, but with audio in NASA TV transmit mode. 73, Lin

On Wed, Mar 21, 2018 at 10:49 AM Steve L kb9mwr@gmail.com wrote:

Ronen,

I know you are in a different country, so you likely don't have the same ridiculously outdated rules pertaining to data that we have here in the US. So I'll spare you the arm chair lawyer stuff.

I had a chance to try some competing cards a few years back. I use them on an unused amateur television channel in the lower part of the band. I locked them to 5 MHz wide and transferred live streaming video just to appease any arm chair lawyers.

I was hoping to use these at modest heights for home to home ham use. So 50 feet up, etc.

Things I didn't take into account with that scenario; 1 watt at 5 MHz wide is not the same was 1 watt at a few kHz wide for normal voice. The using your HT range as a comparison is no good.

I will tell you one thing I didn't really think about with 70cm is the Fresnel zone is huge. The radius is about 80 feet, where as on 2.4 GHz its about 30 feet. So line of sight is only part of the equation/problem for most folks. When you only have a watt, all the path losses tend to be a big deal; be that not true line of site or Fresnel zone obstructions.

They do work quite far, further than I have achieved with other bands, if you can get up 100 feet on both ends, etc.

If there was an easy way to do more than 1 watt, I'd expect the would have been a lot more useable for me at modest heights and or mobile.

I am presently looking into some Friedcom radios for some slower speed applications (under 192000 bps). I am learning the FC-301 that I have heard many good things about is now discontinued and replaced by the FC-302. If anyone has any experience, I'd appreciate hearing about it.

Steve, KB9MWR

On Wed, Mar 21, 2018 at 4:26 AM, R P ronenp@hotmail.com wrote:

...

Hi there

Im starting to check the option to install a Wireless lan on 430 MHZ

using the Xagyl card ...

...

Has anyone experienced such wireless networks ?

Most important to me is the Range and non line of sight operation

(especially in mobile)

...

Have anyone done it and can say something on the subject ?

https://www.xagyl.com/download/XC420M_Datasheet.pdf

XC420M DATASHEET - XAGYL<

https://www.xagyl.com/download/XC420M_Datasheet.pdf%3E

...

www.xagyl.com WWW.XAGYL.COM RADIO SYSTEM INFORMATION Tx/Rx Specification 20MHz

Channel Width 432.5MHz and 437.5MHz only DATA RATE MODULATION TX POWER RX SENSITIVITY

...

Thanks Gorward

Ronen - 4Z4ZQ

I dont know anything about this one. It does have lower drive -10~26DBM claims 13w out

ebay item id 282883868312 Lin

On Sat, Mar 31, 2018 at 3:04 PM, Steve L kb9mwr@gmail.com wrote:

This supposedly works for TDMA (DMR)... The only problem is the 2 watt drive needed. Quite a shame, despite the name of the company the price is right where I'd give it a try.

https://baofengtech.com/amp-u25d

On Wed, Mar 21, 2018 at 4:53 PM, Lin Holcomb lin@n4yci.com wrote:

...

I wonder if the Turn around time on one of the DMR UHF amps would be fast enough to bump the power upto 40 watts or six. Again not possible in the US due to the antiquated symbol rate rule. I think that there is either a petition to change this or a soon to be petition to change the rule. That said changing hats this is the spectrum in the US where ATV operates analog inputs to some repeaters 421.25out 427.25Simplex and 439.25mhz input. Our repeater operated on 427.25 with no audio sub-scarier in repeater mode, but with audio in NASA TV transmit mode. 73, Lin

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