Dustin wrote:Hello, I am going to be making some adaptor harnesses for my HT, they aregoing to have a PL-259 on one end and a SMA male end on the other, myquestion is are the center conductor's inside the RG-58 and RG-174 thesamediameter because I see all the jumper harness's that are availablecommercially made of RG-174, but when I see DIY pages they are made ofRG-58, and I just want to make sure. I read that RG-58 has alot less lossand is cheaper. Thanksrg-58 is cheaper. Bigger and has less loss-Registered Linux User #346565. 'Dustin' wrote in message.Hello, I am going to be making some adaptor harnesses for my HT, they aregoing to have a PL-259 on one end and a SMA male end on the other, myquestion is are the center conductor's inside the RG-58 and RG-174 thesamediameter because I see all the jumper harness's that are availablecommercially made of RG-174, but when I see DIY pages they are made ofRG-58, and I just want to make sure. I read that RG-58 has alot less lossand is cheaper. ThanksAs the impedance is determined by the ratio of the outer conductor to thecenter conductor (for the same insulation between them) the 174 has to havea smaller center conductor than the 58.
RG-58 does have more loss but forless than 5 feet on two meters I doubt that you will notice it. Probablynot even on 440 mhz. If using the RG-58 try to find some with a strandedcenter conductor as much of it seems to be solid wire.
Hello, I am going to be making some adaptor harnesses for my HT, they aregoing to have a PL-259 on one end and a SMA male end on the other, myquestion is are the center conductor's inside the RG-58 and RG-174 the samediameter because I see all the jumper harness's that are availablecommercially made of RG-174, but when I see DIY pages they are made ofRG-58, and I just want to make sure. I read that RG-58 has alot less lossand is cheaper. ThanksRG-58 has lower loss than RG-174, because RG-58's center conductor islarger in diameter than RG-174s. You'll need to buy SMA connectorswhich are specifically designed for RG-58 - this cable won't fit intoan SMA connector made for RG-174.Because of its larger diameter, it's also likely to be stiffer thanRG-174. This means that it could put more stress on the HT's SMAsocket, if the harness is pulled or pushed sideways.The lower loss in RG-58 isn't likely to make a significant amount ofdifference for a short harness, at least not at 2-meter frequencies.-Dave Platt AE6EOHosting the Jade Warrior home page:I do not wish to receive unsolicited commercial email, and I willboycott any company which has the gall to send me such ads! Finding an inexpensive SMA connector for RG-58 is difficult.Jim'Dustin'shared these priceless pearls of wisdom:-Hello, I am going to be making some adaptor harnesses for my HT, they are-going to have a PL-259 on one end and a SMA male end on the other, my-question is are the center conductor's inside the RG-58 and RG-174 the same-diameter because I see all the jumper harness's that are available-commercially made of RG-174, but when I see DIY pages they are made of-RG-58, and I just want to make sure. I read that RG-58 has alot less loss-and is cheaper.
![Rg178 Rg178](http://www.dxing.info/images/coax_174_loss_data.jpg)
Thanks-Jim Weir, VP Eng. WX6RSTA&P, CFI, and other good alphabet soup. Why would you do that? Solid has less loss. If you are worried about itflexing too much and work-hardening (or breaking) the center conductor, use astrain relief of shrink sleeving at both ends.To my mind, the stiffer the cable, the more stress it's going to puton the HT's SMA jack.
Stiffening the cable via heatshrink tubing isonly going to make this worse, by increasing the moment arm.SMA jacks on some HTs (e.g. The VX-5) are rather notorious for workingloose, even under the modest stress and strain of a rubber-duckantenna. IMHO, SMA is a fine connector for intra-cabinet connectionsand fixed-station applications, but it's less than ideal for antennaconnections on handhelds.-Dave Platt AE6EOHosting the Jade Warrior home page:I do not wish to receive unsolicited commercial email, and I willboycott any company which has the gall to send me such ads!
Attenuation (dB per 100 feet): MHz: 30: 50: 100: 146: 150: 440: 450: 1000: 2400 #2632: RG-174: 5.5: 6.6: 8.8: 13.0: 25.0: 30.0: 75.0 #0985: LMR-100A® 3.9: 5.1: 8. Type of Coaxial Cable to Use? Discussion in 'Tele-Technical' started by GuitarNinja, Sep 14, 2007. Sep 14, 2007 #1. I should have used some RG-174, which is what I use for shielded runs inside an amplifier. That stuff is nice and thin - and flexible. I implied that I changed the RG-58 above, but did not mention the new wiring.
In article,Richard Clark wrote:then the wire will work harden and breakCopper?That's my experience, and a few minutes of Google-searching the Webcomes up with numerous references stating that copper does suffer fromwork hardening after cold-deformation. The extent depends on thepurity of the copper and on what other metals it has been alloyedwith. Lead is apparently one of the few metals not subject to workhardening.This process can be reversed by annealing, but that's a bit tricky todo if the copper is already part of a coaxial cable:-)-Dave Platt AE6EOHosting the Jade Warrior home page:I do not wish to receive unsolicited commercial email, and I willboycott any company which has the gall to send me such ads!