Ham radio is alive, even with computers, and that goes for cw and PSK31. If you use a computer for decoding PSK31 (which I do) then why not use the same hardware for decoding cw? I use a computer to decode my cw. I've passed my 5wpm test a few years ago and can copy 10-15wpm. However, with a wife, a career, and kids running around the house I can't dedicate time to improving my cw copy speed. However, for a few bucks at I can make a cw and RTTY keying interface for my computer and let a number of programs key the radio and transmit. I work a lot of DX this way and have a lot of fun doing so. Using the above setup I worked all over the world into places I needed a map to see where they were.
So my workaround is to still work cw, except I use my computer. A very good digimode program is fldigi which is GPLd in linux and ported to FreeBSD by VA3DB (Diane Bruce, who wrote a lot of the IRC code). fldigi has also been imported into DM780, part of Ham Radio Deluxe. Both programs take advantage of protocols permitting the computer to control the radio via a serial interface.
Diane has also created a bootable cdrom full of ham software she's ported to FreeBSD, called HamFreeSBIE. Google it for a download link, as it's always under development.
Hams tinker and homebuild and develop because they can, just like they go to far away places and operate: because they can. We also provide emergency services because we can. And we make stuff work because we can. I have fewer limitations when using ham radio than when I use my cell phone. And I don't have to pay access fees, either. I do this hobby because I can.
If you want to get more insight into what hams are doing with computers and software, check into irc.freenode.net #hamradio and chat. You'll meet some very good developers and users alike, both working to keep ham radio active.
we'd play army dodge ball... sometimes at very close range... with golf balls.
We also played some rough soccer at times, but never were we told to not play tag. Falling down was just part of the day.
It's the parent's job at the playground to help pick the kid up off the ground, tell the kid to shake off the dirt, and get back in the game. After a while they learn to pick themselves up and won't bother crying in your direction. They just get back in the game. For my four year old son this policy has saved us a lot of kleenex.
If your kid doesn't get stitches by the age of 12 then you better buy some rainbow bumper stickers.
There is no good way to describe the volume occupied by the salt in water. However, you can describe the mass of the salt in the mass of water.
If my memory serves, this is called molality and is kg of solute per kg of solvent. It's been such a long while since I've had to think of this term it hurts my brain.
It's kind of messy, with stuff commented in and out.... but it works for me. It's got tables, lists, altq (crude, but effective), and labels, but no anchors. The labels look great when checking rule matching with pftop.
I use FreeBSD simply because I'm used to it. I've used OpenBSD a few times and I really liked it. But because all my stuff was on FreeBSD I stuck with FreeBSD.
I don't do any development, I'm a very happy BSD user. I don't code, write java, or design web pages. Heaven forbid I'm ever employed as a professional programmer since my education is far from CS.
Read a previous post and you'll have some of my history with the BSDs. When I read that OpenBSD has ipsecctl for creating VPNs I was thrilled. I can only hope it is ported to FreeBSD. I'm always interested in OpenSSH developments, so I keep an ear bent to the OpenBSD group.
Re:Something similar with iptables
on
FreeBSD 6.1 Released
·
· Score: 2, Interesting
Not to denigrate any particular version of linux, but I stopped using linux back when FreeBSD 4.1 was released. I was still tinkering around with all kinds of distributions at the time and had a lot of fun. I toyed with ipfwadmin and ipchains back in the day.
Then I went to comdex in Atlanta around that time. FreeBSD 4.1.1 CDs were handed out there and I talked to several FreeBSD reps there. With a little eye candy and some good facts I was determined to try it.
Since then I've been an avid user of FreeBSD. I've used ipfw and wrote a script for ipfw and queing a few years ago (see bsdvault.net). I've used ipfilter a good bit.
PF did come from the OpenBSD group (to which we owe many thanks) as a replacement to ipfilter in a license dispute. I toyed with an OpenBSD bridge at the time at work and found pf was very workable. Since then I've waited for pf to get ported into FreeBSD.
Then that day arrived. When pf hit the -STABLE branch I was hooked. With altq I was able to take advantage of tcp ack-pri and prioritize my voip services. Piece of cake.
I'm very satisfied with FreeBSD as a server, firewall, and desktop. There's enough in FreeBSD to keep everyone busy trying out all kinds of stuff. That's why I've used it since 4.1.1.
I'd really like to see OpenBSD's ipsecctl ported to FreeBSD soon, too.
I use FreeBSD 6 because of the overload table option available when using pf: ## for SSHD from other hosts pass in log on $ext_if inet proto tcp from any to $ext_if:network \
port 22 flags S/SA keep state \
(max 5, source-track rule, max-src-nodes 5, \
max-src-states 10, tcp.established 60, tcp.closing 5, \
max-src-conn-rate 3/30, overload flush global) \
label "SSHD_IN_$if"
If some sshd scanner hits my host more than three times in 30 seconds his packets go to an overload table and his states flushed. Any address or net listed in the badhosts table is blocked outright. It works as advertised and I couldn't be happier.
pf+altq really does give me a warm and fuzzy feeling inside.
You believe BPL will be less expensive? I doubt it. Modulated frequencies on medium voltage, unshielded lines act as huge antennas and will cause all kinds of grief to licensed radio services (ham radio, public safety, SWL, etc.) If BPL is to succeed, I'd rather see fiber on the power lines connected to 802.11 devices which you'd interface with.
I doubt BPL will work effectively. Many US companies have sworn off it for technical and financial reasons. I just don't want BPL to fill the airwaves with noise.
I'm an engineer and I have a three year old son. I have a nurse for a sister-in-law and she has an infant girl.
On the flip side, we can say overstressed office assistants have boys and mild-macho jewelers have girls.
It takes two to tango.
Getting the twerps new to IRC to defrag their disks after a kernel upgrade was a lot of fun. We'd use the built in disk defragmenter untility, dd.
After some convincing, the target/victim/luser, would zero^H^H^H^Hdefrag his disk with dd if=/dev/zero of=/dev/hda
while on irc... after five minutes of watching his drive light blink he'd drop off.
I recently cleaned off a student's laptop and got paid handsomely for it. The XP laptop had outdated antivirus, no firewall, and Bagle.[A-Z] was on it in every executable. Thank god for pskill so I could kill LSASS.EXE and clean it.
I sent the laptop home with the firewall turned on and the parent bought a cable/DSL firewall for use at home. The hours I spent cleaning that infection helped pay for a new set of tires for my car.
You're not allowed to encrypt or disguise the meaning of your transmission in any way. However, the overhead of encryption is a beast on 9600bps communications.
Packet radio, in my understanding is more like a bulletin board messaging system. I've never used it, it sounds neat, but there's plenty of info on google about it. Contact a radio club and find out. get a license and do more!
The code wasn't difficult. Your attitude about the code should change. CW may not sound sexy but it's a lot easier to find your slice of the spectrum with it and start a qso.
You only have to learn to copy at 5 wpm one time. The work you put into the code now will reward you with ample bandwidth in the HF spectrum. No one forces you to use cw, just test successfully.
Personally, I passed the cw test only on the one minute of solid copy.
KD5ZEF
I wonder how it'll affect the BPL test sites. Most BPL (broadband over powerline) would be affected somehow since they operate on HF frequencies. Additionally most shortwave radio was adversely affected.
I saw some of last night's aurora from my location in SE Arkansas. Anyone else see the aurora?
Slashdot Mirror
Ham radio is alive, even with computers, and that goes for cw and PSK31. If you use a computer for decoding PSK31 (which I do) then why not use the same hardware for decoding cw? I use a computer to decode my cw. I've passed my 5wpm test a few years ago and can copy 10-15wpm. However, with a wife, a career, and kids running around the house I can't dedicate time to improving my cw copy speed. However, for a few bucks at I can make a cw and RTTY keying interface for my computer and let a number of programs key the radio and transmit. I work a lot of DX this way and have a lot of fun doing so. Using the above setup I worked all over the world into places I needed a map to see where they were.
So my workaround is to still work cw, except I use my computer. A very good digimode program is fldigi which is GPLd in linux and ported to FreeBSD by VA3DB (Diane Bruce, who wrote a lot of the IRC code). fldigi has also been imported into DM780, part of Ham Radio Deluxe. Both programs take advantage of protocols permitting the computer to control the radio via a serial interface.
Diane has also created a bootable cdrom full of ham software she's ported to FreeBSD, called HamFreeSBIE. Google it for a download link, as it's always under development.
Hams tinker and homebuild and develop because they can, just like they go to far away places and operate: because they can. We also provide emergency services because we can. And we make stuff work because we can. I have fewer limitations when using ham radio than when I use my cell phone. And I don't have to pay access fees, either. I do this hobby because I can.
If you want to get more insight into what hams are doing with computers and software, check into irc.freenode.net #hamradio and chat. You'll meet some very good developers and users alike, both working to keep ham radio active.
- N4CI
When is Google getting into the Paper business?
After working in a paper mill for a number of years, 15MW is small potatos.
we'd play army dodge ball... sometimes at very close range... with golf balls.
We also played some rough soccer at times, but never were we told to not play tag. Falling down was just part of the day.
It's the parent's job at the playground to help pick the kid up off the ground, tell the kid to shake off the dirt, and get back in the game. After a while they learn to pick themselves up and won't bother crying in your direction. They just get back in the game. For my four year old son this policy has saved us a lot of kleenex.
If your kid doesn't get stitches by the age of 12 then you better buy some rainbow bumper stickers.
I think this was an original test platform for the smaller turbine: see here.
There is no good way to describe the volume occupied by the salt in water. However, you can describe the mass of the salt in the mass of water.
If my memory serves, this is called molality and is kg of solute per kg of solvent. It's been such a long while since I've had to think of this term it hurts my brain.
I think I did 23 hours in a quarter at GT too... most of it in the rec area playing pool. It was probably the same quarter I made dean's list.
Process control is still fun... and I don't wear a tie. It's nice to see you're in academia.
S. Nolde, BChE '95. 'nuff said.
It's kind of messy, with stuff commented in and out.... but it works for me. It's got tables, lists, altq (crude, but effective), and labels, but no anchors. The labels look great when checking rule matching with pftop.
And the man page: pf.conf(5)
Check out the examples. Bridging with OpenBSD is a piece of cake. It takes only a few minutes to set it up. OpenBSD has the info you need.
I use FreeBSD simply because I'm used to it. I've used OpenBSD a few times and I really liked it. But because all my stuff was on FreeBSD I stuck with FreeBSD.
I don't do any development, I'm a very happy BSD user. I don't code, write java, or design web pages. Heaven forbid I'm ever employed as a professional programmer since my education is far from CS.
Read a previous post and you'll have some of my history with the BSDs. When I read that OpenBSD has ipsecctl for creating VPNs I was thrilled. I can only hope it is ported to FreeBSD. I'm always interested in OpenSSH developments, so I keep an ear bent to the OpenBSD group.
Not to denigrate any particular version of linux, but I stopped using linux back when FreeBSD 4.1 was released. I was still tinkering around with all kinds of distributions at the time and had a lot of fun. I toyed with ipfwadmin and ipchains back in the day.
Then I went to comdex in Atlanta around that time. FreeBSD 4.1.1 CDs were handed out there and I talked to several FreeBSD reps there. With a little eye candy and some good facts I was determined to try it.
Since then I've been an avid user of FreeBSD. I've used ipfw and wrote a script for ipfw and queing a few years ago (see bsdvault.net). I've used ipfilter a good bit.
PF did come from the OpenBSD group (to which we owe many thanks) as a replacement to ipfilter in a license dispute. I toyed with an OpenBSD bridge at the time at work and found pf was very workable. Since then I've waited for pf to get ported into FreeBSD.
Then that day arrived. When pf hit the -STABLE branch I was hooked. With altq I was able to take advantage of tcp ack-pri and prioritize my voip services. Piece of cake.
I'm very satisfied with FreeBSD as a server, firewall, and desktop. There's enough in FreeBSD to keep everyone busy trying out all kinds of stuff. That's why I've used it since 4.1.1.
I'd really like to see OpenBSD's ipsecctl ported to FreeBSD soon, too.
Pure gibberish when compared to pf or ipfilter syntax (IMO). YMMV.
I use FreeBSD 6 because of the overload table option available when using pf:
## for SSHD from other hosts
pass in log on $ext_if inet proto tcp from any to $ext_if:network \
port 22 flags S/SA keep state \
(max 5, source-track rule, max-src-nodes 5, \
max-src-states 10, tcp.established 60, tcp.closing 5, \
max-src-conn-rate 3/30, overload flush global) \
label "SSHD_IN_$if"
If some sshd scanner hits my host more than three times in 30 seconds his packets go to an overload table and his states flushed. Any address or net listed in the badhosts table is blocked outright. It works as advertised and I couldn't be happier.
pf+altq really does give me a warm and fuzzy feeling inside.
You believe BPL will be less expensive? I doubt it. Modulated frequencies on medium voltage, unshielded lines act as huge antennas and will cause all kinds of grief to licensed radio services (ham radio, public safety, SWL, etc.) If BPL is to succeed, I'd rather see fiber on the power lines connected to 802.11 devices which you'd interface with.
I doubt BPL will work effectively. Many US companies have sworn off it for technical and financial reasons. I just don't want BPL to fill the airwaves with noise.
BPL is just crap, really.
I'm an engineer and I have a three year old son. I have a nurse for a sister-in-law and she has an infant girl. On the flip side, we can say overstressed office assistants have boys and mild-macho jewelers have girls. It takes two to tango.
After some convincing, the target/victim/luser, would zero^H^H^H^Hdefrag his disk with dd if=/dev/zero of=/dev/hda while on irc... after five minutes of watching his drive light blink he'd drop off.
They could use more power.
KD5ZEF
I sent the laptop home with the firewall turned on and the parent bought a cable/DSL firewall for use at home. The hours I spent cleaning that infection helped pay for a new set of tires for my car.
Who says this economy is down?
You're not allowed to encrypt or disguise the meaning of your transmission in any way. However, the overhead of encryption is a beast on 9600bps communications.
Packet radio, in my understanding is more like a bulletin board messaging system. I've never used it, it sounds neat, but there's plenty of info on google about it. Contact a radio club and find out. get a license and do more!
KD5ZEF
The code wasn't difficult. Your attitude about the code should change. CW may not sound sexy but it's a lot easier to find your slice of the spectrum with it and start a qso. You only have to learn to copy at 5 wpm one time. The work you put into the code now will reward you with ample bandwidth in the HF spectrum. No one forces you to use cw, just test successfully. Personally, I passed the cw test only on the one minute of solid copy. KD5ZEF
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Since BMWs are mobile penis enlargers, anything larger than a normal key is rejected by default.
I wonder how it'll affect the BPL test sites. Most BPL (broadband over powerline) would be affected somehow since they operate on HF frequencies. Additionally most shortwave radio was adversely affected.
I saw some of last night's aurora from my location in SE Arkansas. Anyone else see the aurora?
I'm taking my Technician's test this saturday in the Little Rock hamfest at the Alltell arena.
Testing begins at 8am, no reservations accepted.
I've sold some unused hardware and have a budget to buy a mobile 2m unit and a decent dual band HT.