RE: [drakelist] MN2000 balanced feeders
I have had great success here with what is essentially a 135 foot inverted vee fed with 300 ohm twinlead. I use a DX Engineering 1:1 balun mounted outside the house, with a short section of RG-8 leading into the shack (and the MN-2000). That way I don't have to worry about bringing in the twinlead. The 1:1 balun keeps the impedance on the transmission line from dropping too low as might happen with the 4:1 balun. I did slightly change the length of the twinlead (should be approx 108/F) to find a perfect match on all bands. --Ed G- _ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bill Ellis Sent: Sunday, June 01, 2008 1:45 AM To: [EMAIL PROTECTED] Subject: [drakelist] MN2000 balanced feeders Has anyone been able to adapt the MN2000 for use with open feeders? Bill, WB9CAC
[drakelist] Magicom speech processor
Picked up a Magicom Speech Processor recently on eBay with no instructions or manual or schematic. Does anyone on the list have a manual with instructions to hook it up in a T-4XB or TR-7 that they could scan and email me or else point me to an on-line source that I can download? No luck Googling... Thanks, Mike WA3WOM
Re: [drakelist] Magicom speech processor
Robert Ladden [EMAIL PROTECTED] made an utterance to the drakelist gang -- I saw it and considered bidding. A manual can be found on BAMA at http://bama.edebris.com/manuals/magnum6/drake 73, Bob WW3QB At 08:56 AM 6/2/2008, you wrote: Picked up a Magicom Speech Processor recently on eBay with no instructions or manual or schematic. Does anyone on the list have a manual with instructions to hook it up in a T-4XB or TR-7 that they could scan and email me or else point me to an on-line source that I can download? No luck Googling... Thanks, Mike WA3WOM -- Submissions:[EMAIL PROTECTED] Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] Magicom speech processor
There is a difference?among clippers, limiters, processors, and compressors.? In general, unless the device is properly designed (such as the Drake speech processor, the DX Engineering processor, etc.) it will result in distortion, excessive bandwidth, and other undesirable attributes.? Too, there are differences in effectiveness based upon whether an rf or af speech processor is used.? It is often easy to spot the good ones from the bad ones during a pileup on a DX station or during contests. --
[drakelist] Best Coax....
Folks: I have a TR-4C and just getting into the ham scene again. I'm setting-up my new station and wondering what is the best all-around coax for vertical and beam antennas with this rig? I'm thinking RG-8/U.please advise. Thank you.
Re: [drakelist] Best Coax....
Christopher Kovacs [EMAIL PROTECTED] made an utterance to the drakelist gang -- Philip Grocki wrote: *Folks:* ** *I have a TR-4C and just getting into the ham scene again. I'm setting-up my new station and wondering what is the best all-around coax for vertical and beam antennas with this rig? I'm thinking RG-8/U.please advise. Thank you.* Hi Philip, Take a look at LMR240 coax. It's little stiff. They also have an ultraflex version (little more loss). It's about the size of RG-8/x. Frequency Power Capacity Attenuation (db per 100ft) === 30 Mhz 1490 1.3 50 1150 1.7 150 660 3.0 220 540 ~4.0 73, Chris w0anm -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] Best Coax....
Jim Shorney [EMAIL PROTECTED] made an utterance to the drakelist gang -- On Mon, 02 Jun 2008 15:48:13 -0500, Christopher Kovacs wrote: Christopher Kovacs [EMAIL PROTECTED] made an utterance to the drakelist gang -- Philip Grocki wrote: *I have a TR-4C and just getting into the ham scene again. I'm setting-up my new station and wondering what is the best all-around coax for vertical and beam antennas with this rig? I'm thinking RG-8/U.please advise. Thank you.* Take a look at LMR240 coax. It's little stiff. They also have an ultraflex version (little more loss). It's about the size of RG-8/x. LMR240 is great stuff, but is overkill for HF. Good old Belden 8214 RG-8 will do quite nicely, and is better suited for the rotor loop if using a beam antenna. 73 -Jim NU0C -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] Best Coax....
Hello Gang... What are the pro's con's on RG-8X??? Charlie... - Original Message - From: Jim Shorney To: drakelist@zerobeat.net Sent: Monday, June 02, 2008 6:45 PM Subject: Re: [drakelist] Best Coax Jim Shorney [EMAIL PROTECTED] made an utterance to the drakelist gang -- On Mon, 02 Jun 2008 15:48:13 -0500, Christopher Kovacs wrote: Christopher Kovacs [EMAIL PROTECTED] made an utterance to the drakelist gang -- Philip Grocki wrote: *I have a TR-4C and just getting into the ham scene again. I'm setting-up my new station and wondering what is the best all-around coax for vertical and beam antennas with this rig? I'm thinking RG-8/U.please advise. Thank you.* Take a look at LMR240 coax. It's little stiff. They also have an ultraflex version (little more loss). It's about the size of RG-8/x. LMR240 is great stuff, but is overkill for HF. Good old Belden 8214 RG-8 will do quite nicely, and is better suited for the rotor loop if using a beam antenna. 73 -Jim NU0C -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] Best Coax....
Well, you'll start a deluge with that question, Philip. I prefer RG-213 as it will handle power later with your L4B, takes the twisting of the rotor better for me, and the center insulator (fine for HF) solders much easier than foam coax like 8214 and other good ones. Just my .02 worth, not worth that much. 73, Don, WB5HAK
Re: [drakelist] Best Coax....
I had opined to Philip about RG8X that I personally have had very good luck with it, including about a 50foot run that is buried and has been fine for several years. I wouldn't hit it with a lot of power, but I have a T4X so no prob. My motivation was cost. 73, Chuck, K1OM, Alachua, FL On Mon, Jun 2, 2008 at 6:52 PM, WB4YQV [EMAIL PROTECTED] wrote: Hello Gang... What are the pro's con's on RG-8X??? Charlie... - Original Message - *From:* Jim Shorney [EMAIL PROTECTED] *To:* drakelist@zerobeat.net *Sent:* Monday, June 02, 2008 6:45 PM *Subject:* Re: [drakelist] Best Coax Jim Shorney [EMAIL PROTECTED] made an utterance to the drakelist gang -- On Mon, 02 Jun 2008 15:48:13 -0500, Christopher Kovacs wrote: Christopher Kovacs [EMAIL PROTECTED] made an utterance to the drakelist gang -- Philip Grocki wrote: *I have a TR-4C and just getting into the ham scene again. I'm setting-up my new station and wondering what is the best all-around coax for vertical and beam antennas with this rig? I'm thinking RG-8/U.please advise. Thank you.* Take a look at LMR240 coax. It's little stiff. They also have an ultraflex version (little more loss). It's about the size of RG-8/x. LMR240 is great stuff, but is overkill for HF. Good old Belden 8214 RG-8 will do quite nicely, and is better suited for the rotor loop if using a beam antenna. 73 -Jim NU0C -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] Best Coax....
Gary Poland [EMAIL PROTECTED] made an utterance to the drakelist gang -- Philip, I have used RG-8, RG-58, RG-59, RG-8X, RG-214, RG-213, 9913, 300 ohm and 450 ohm ladder line, and probably a wet noodle in there some where over the years, it all works. The coax type depends on the length of run to the antenna, whether you are burying it or not, the frequency range you are going to use it with, and whether you will be running an amplifier. Last but not least how much you want to spend. Do a little research online and pick what's best for you. As far as your TR-4C, it really doesn't care what you use. 73, Gary W8PU http://home.cinci.rr.com/w8pu -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] Best Coax....
+1 for RG-213, had mine up for almost 30 years, took it down because I moved, hi! Nice es Flexible, very acceptable losses up to 30mhz. I even used it on my 2mtr Newtronics Verticle! GL.. 73 Rich WA2RQY/4
Re: [drakelist] Best Coax....
Darrell Bellerive [EMAIL PROTECTED] made an utterance to the drakelist gang -- In todays world of a multitude of RF sources everywhere, I have chosen to use only double shielded cable to help minimize ingress. Perhaps overkill, but keeping unwanted signals out of my station is a factor I consider important. 73, Darrell VA7TO On Monday 02 June 2008 13:27, Philip Grocki wrote: Folks: I have a TR-4C and just getting into the ham scene again. I'm setting-up my new station and wondering what is the best all-around coax for vertical and beam antennas with this rig? I'm thinking RG-8/U.please advise. Thank you. -- Darrell Bellerive Amateur Radio Stations VA7TO and VE7CLA Grand Forks, British Columbia, Canada -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] MN2000 balanced feeders
Darrell Bellerive [EMAIL PROTECTED] made an utterance to the drakelist gang -- While a balun on the output side of a tuner will couple some energy it may not be very efficient at some impedances. A balun, whether 1:1 or 4:1, is designed for a specific characteristic impedance. In most ham radio applications the transmitter side impedance is designed for 50 ohms unbalanced. So in a 1:1 balun the antenna side should have a resistive impedance of 50 ohms balanced and a 4:1 balun should have a resistive impedance of 200 ohms balanced. As the antenna impedance changes from the designed characteristic impedance by reactance and/or resistance, the efficiency and transformation ratio will deteriorate. Just how much will depend on the design of the balun windings, the core material, and the resistance and reactance of the load. As many point out, it will still work. One can lose as much as 6 to 10 dB or more in a tuner, balun, and feedline and still make lots of contacts. QRP operators prove this all the time. Heating of the core material is one indicator of lost power, but remember that the lost power will heat a small core to a much higher temperature than a large core. So just because the core does not get too warm, doesn't mean power isn't being lost to heat. Modern automatic antenna tuners are hard to beat for ease of operation, but for the highest efficiency it is hard to beat the old link coupled tuners for balanced line applications. All electrical systems are compromises between a number of variables such as efficiency, cost, ergonomics, size, weight, availability of materials, etc. Just be sure you understand the compromises you are making. 73, Darrell VA7TO On Monday 02 June 2008 03:12, Ed G wrote: I have had great success here with what is essentially a 135 foot inverted vee fed with 300 ohm twinlead. I use a DX Engineering 1:1 balun mounted outside the house, with a short section of RG-8 leading into the shack (and the MN-2000). That way I don't have to worry about bringing in the twinlead. The 1:1 balun keeps the impedance on the transmission line from dropping too low as might happen with the 4:1 balun. I did slightly change the length of the twinlead (should be approx 108/F) to find a perfect match on all bands. --Ed G- -- Darrell Bellerive Amateur Radio Stations VA7TO and VE7CLA Grand Forks, British Columbia, Canada -- Submissions:drakelist@zerobeat.net Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
