• Effective immediately we will be deleting, without notice, any negative threads or posts that deal with the use of encryption and streaming of scanner audio.

    We've noticed a huge increase in rants and negative posts that revolve around agencies going to encryption due to the broadcasting of scanner audio on the internet. It's now worn out and continues to be the same recycled rants. These rants hijack the threads and derail the conversation. They no longer have a place anywhere on this forum other than in the designated threads in the Rants forum in the Tavern.

    If you violate these guidelines your post will be deleted without notice and an infraction will be issued. We are not against discussion of this issue. You just need to do it in the right place. For example:


  1. Z

    SWR issue on DC grounded antenna.

    Hi guy's! New to this forum. From my Username, figure I'm a Ham radio operator. I'm no new-be to antennas and radios... very good with those... till today! As I'm going to be a radio / vehicle Marshall at a 4x4 event, I fitted a 29 Mhz radio to my car. I got with the radio a 29 Mhz Magnetic...
  2. 1

    1/4 wave ground plane SWR and POWER, antenna theory

    Today i built my first antenna. A simple 1/4 wave ground plane with copper wire and a SO239 connecter. What i found very interesting was when i was complete and i started to check power and swr, that i was able to tune the SWR and in turn, adjust power out, while changing the angle of the radial...
  3. N

    No SWR meter/Antenna Analyzer/..., now what?

    Seems like tonight there will be a local ARC net talking about "shack gear" and I suspect the SWR meter is one of those indispensables. But what do you do when you don't have one yet? I was wondering if people have worked with tuning their (homemade too) J-pole, mono, or dipole, and what...
  4. F

    Whacky SWR's on Mag Mount Antenna

    Okay so this has driven me crazy. Its the only car I have the problem with so here it goes. I bought 3 K30 Magmount antennas from K40 as part of a promo run by the Pilot travel centers. I use one on rental cars when I travel. I use the other in my personal vehicle. The third is a spare...
  5. SnowWalker

    SWR fluctuates from day to day

    I am using my Galaxy DX959 SSB mobile CB as a base radio for the time being. My problem is, my SWR reading on my built in SWR meter seems to fluctuate from day to day and somewhat from an early mornining reading to a middle evening reading. On the good days I am getting a 1.3 - 1.5 reading...
  6. SnowWalker

    I need some antenna clarification here

    I am still trying to set up my CB antenna so it is at least 90 - 95% efficient for my 20' vertical 5/8 wave antenna and mobile/base radio. The antenna is mounted on the roof of our house; I think I fully understand the proper way of grounding the antenna; however, there are about two dozen...
  7. DylanMadigan

    How much SWR is safe?

    -sorry, not sure if this is the right area- I have a Motorola CDM1550-LS+ transmitting at 48w on UHF. With a 5 foot cable, my SWR meter shows about 0.5. With my 25ft cable made out of some fairly cheap cable (RG58), I'm getting about 4 on the meter, just inside the red. I don't need the signal...
  8. A

    Odd SWR variance

    I just put a new CB rig in my car recently. Cobra 29 LTD Classic with a Wilson Little Wil 3' antenna. Took it to an open area and properly calibrated the SWR. Great readings across the entire band with an SWR of ~1.3 at most. What's strange is that a few times now I've gotten in my car, powered...
  9. P

    Bc 880 cb radio

    My Bearcat 880 CB is having SWR issues it is reading an 8.04 when I test it on the built in SWR calibrator on the radio... I have no clue how to fix this issue I have went thru the steps like 3 or 4 times on how to Calibrate SWR If anyone could please help me out it would be great!
  10. SOUTH300

    Transmit Problem with MCS2000 and Antenna

    I just recently re-installed a MCS2000 Model II VHF from one vehicle to another. 2008 F-150 to a 2009 F-150. I am currently using a Diamond K-400 Trunk Lip antenna mount and secured it to the bed rail. In the old truck, it worked like a dream. In the new truck, this is what happens: On...
  11. K

    Transfer of power with an antenna tuner

    If you have an antenna tuner, and your antenna is a 10:1 match for your frequency, and the tuner brings it down to 1.2:1, do you get the same, or close to the same transfer of power to the antenna as you would if the antenna was a true 1.2:1? I have more to say on this, but I want to see what...
  12. K

    LDG 1000 Pro II odd occurrence is normal??

    I found that once you train the tuner to your antenna, and you then improve your antenna, so you SWR goes from 3:1 to 1.5:1 on a particular band, the tuner will not be triggered into tuning on a frequency that it already has in memory. So you will see your SWR is higher than you know it should...
  13. H

    need some input from the experts

    I have a uniden bearcat 980ssb and i just ordered a rm italy kl203p amplifier for it. i have a 3 foot firestik antenna and its as long as i can get it and the swr's are about 1.45 on channel 40 and 1.00 on channel 1. im worried that with this amp i may raise my swr's to much. What do you guys...
  14. M

    SWR Advice

    Hi I am pretty new to Ham radio, so I offer the following. I recently strung a G5RV Pro ZS6BKW Optimized with 1:1 Balun. It is about 55 feet in the trees, but that is not the point. https://www.amateurradiosupplies.com/ProductDetails.asp?ProductCode=10098 When attempting to tune the SWR I...
  15. S

    Inexpensive SWR meters for VHF, UHF, HF

    I'd like to find a reliable SWR meter that is inexpensive, covers 0-500 MHz, up to 100W. Realizing this is probably impossible, What is your breakdown of products to cover these frequencies, while remaining inexpensive and relatively accurate / reliable? I'd most like to find a solid VHF...
  16. ButlerAlerts

    CDM 1250 UHF SWAr Severe Issue

    CDM 1250 UHF SWR Severe Issue Ok, so I got my CDM 1250 in the mail yesterday, with the Astron power Supply and Hood with Desk Mic. I have been receiving EXTREMELY high SWR, to where it goes off my meter. I have tried it on my A99 at 38 Feet, my TRAM at about 10-12 Feet, and my new RadioShack...
  17. S

    Mounting a 102" whip on my F250 question?

    Im currently running a firestik off of a driver side front fender mount of my 1999 Ford F250....decent local strength. My buddy just bought a 102" whip from Radio Shack and we decided to briefly install it where my firestik goes. Bam! I was instantly shooting skip without even trying and I was...
  18. J

    SWR changes with outside TEMP?

    setup= mirror mounted dual firestiks with tunable tip, mounted just over 7'6" apart, 18ft cophased coax. SWR is lower when it is cloudy and colder outside, the brighter the sun the higher the SWR. Am I missing something obvious here, or am I thinking way too much into this? out of curiosity...
  19. M

    swr reading

    got a cobra 29 classic and wilson 5000 mag. on a 2005 durango. hooked up a radio shack swr meter and got 1.1 on chanel 1 and 1.2 on chanel 40 1.1 on channel 20 great right. unhook meter and turn up power mic when transmitting my antena light will slowly come on and stay on while mic is...
  20. P

    Ground Plane/SWR Antenna Tuning

    This is going to be complicated, I know, but try to hang in here with me on this one. Ok. I've got a dump truck with fiberglass doors but a metal cab. I've been running a tri-mag setup on the roof with a Wilson 5000 Trucker antenna but it's got to leave here. It's ruining the paint on my...