slowmover
Active Member
D-Day Paratrooper Vest.
Considered too hot.
(Reproduction)
Below was an idea to use with PRESIDENT Randy to go walkabout from vehicle with several antennas, spare battery, etc., while using VOX.
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AM or FM MODULATION BETTER FOR OFF-ROAD TRAIL COMMS
- Thread starter nokones
- Start date
D-Day Paratrooper Vest.
Considered too hot.
(Reproduction)
Below was an idea to use with PRESIDENT Randy to go walkabout from vehicle with several antennas, spare battery, etc., while using VOX.
.
slowmover
Active Member
The new BARRY II just released.
*INSIDE STORY* President Barry II +
This is the new NRC pimped out Barry II + They’ll be videos later in the week just am a tad sick so some delays expected. FM Modulation ✔️ Strong, defined, kick ass and nice AM Modulation ✔️ It’s a…
simonthewizard.com
I’d use a HARRISON + KL203 if SSB not desired.
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There are a few holes with the antenna review by nokones. (1) when his wife stated that the K30 sounded better, the husband stated that the performance was exactly the same. (2) Lack of other stations. I am in California and if I can find s single channel of the 40 available without other users stepping on all of the signals, I'd go right away and play the lottery. Listening to the audio provided by nokones, I didn't hear any other stations stepping on the test. While not legal, linier amplifiers, reak havok on CB. power mikes turned up to max (throw in effects such as echo and beeps) all add to the rule of "louder is better and further" which is typical for AM CB. (3) db gain of the two antennas? (4) Coax cable specs.
While i like the fact that nokones took the time to do a test, it was, in my opinion inaccurate for the couple of reasons i listed above. CB radio by it's technology and FCC limitations is and always will be a line-of-sight radio, much like FRS, non-repeated GMRS, non-repeated MURS etc.
More CB users need to step up and get their HAM Tech license. The test isn't that tough and opens a wide world of long distance communications (repeaters, clubs and events) without the bucket mouth users on CB (as CB was back in the 50's and 60's)
While i like the fact that nokones took the time to do a test, it was, in my opinion inaccurate for the couple of reasons i listed above. CB radio by it's technology and FCC limitations is and always will be a line-of-sight radio, much like FRS, non-repeated GMRS, non-repeated MURS etc.
More CB users need to step up and get their HAM Tech license. The test isn't that tough and opens a wide world of long distance communications (repeaters, clubs and events) without the bucket mouth users on CB (as CB was back in the 50's and 60's)
tvengr
Well Known Member
What is the deviation on CB FM radios? Thanks!
Based on the facts of your post, everything you stated are completely very Less-than-Accurate. 1) Nokones, being me, did not performed an antenna review, a performance test between the CB AM and CB FM modulations were performed to compare if there were any differences in the Farz: 2) there was no wife involved, just a friend, and there was no K30 antenna involved, two Firestik II antennae with used, one was a transmit antenna and one was a receive antenna; 3) Nokones, still being me, did not make an audio recording of the test, thus there was no audio posted by me.
The only statement by you that may be accurate is you probably do reside in Northern California.
You may want to go back and review whatever you reviewed and verify the facts and get back to the forum regarding your perspective holes in the test that only compared the real time results in comparing which CB modulation out performed the other in Farz that was the subject of a previous discussion on this forum, and that I would conduct a test to back up my previous statement.
nd5y
Member
1.8 kHz wich is the same as Europe.
FCC reg. says the max is 2 kHz.
slowmover
Active Member
I like the premise of the thread.
Hope you’ll continue.
Last addition is that I’ll occasionally see a pair or even a convoy of 4WD vehicles going down the highway. The hours on-trail may be greater. But the miles on-highway will be higher. So don’t forget CB road performance (an antenna swap for some rigs).
Not advice for test so much as trying to cover eventualities.
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Hope you’ll continue.
Last addition is that I’ll occasionally see a pair or even a convoy of 4WD vehicles going down the highway. The hours on-trail may be greater. But the miles on-highway will be higher. So don’t forget CB road performance (an antenna swap for some rigs).
Not advice for test so much as trying to cover eventualities.
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tvengr
Well Known Member
Thank you!
I sure loved my ALICE medium pack too. You sure could pack quit a few things in it! It also would make you feel a little better taking cover behind it while the rest of the birds dropped everyone off.
Well, I got all my quarterly mobile and portable radio programming updates done so, my next project was to install the Antenna Specialist/Antenex/Laird/TE Connectivity Trunk Lip NMO Mount and C27 Base Load CB Antenna on my 23 Wrangler IZARUBICON 2 Dr. as recommended by a couple of forum members. The install went pretty easy and yes, I have chassis ground continuity at the mount and NMO connector. That was verified before I cut the cable to the desired length and installed the UHF (PL 259) Connector.
The mount and antenna was installed at the hood rear lip edge in front of the cowl on the passenger side as near to the outside as possible to not interfere with my Ditch Light.
Before I do any cutting of the antenna element, I better check the provided cutting chart and see what is recommended for the CB freqs and the chart indicated a cut at the 49" mark for 27 Megs. I measured the element and it was already 49". In checking the VSWR, right off the bat my Rig-Expert indicated an initial VSWR at just a tad less than 1.5:1 on Ch. 1 and a little less than 1.2:1 on Ch. 40. Since, I can't stretch the antenna element, I elected to raise the antenna element about a 1/4" in the antenna ferrel. That worked pretty good but, based on my readings, I elected to drop it a tad back down and I ended up with 1.05:1 across the board. I'll just have to live with that.
Next will be the comparison test and see what would be the difference in the Farz between the Firestik II and the C27 antennae. However, I have to wait until my friend gets back from Colorado next week so we can use the same Avalanche vehicle and I need to get another C27 antenna, so we are testing with a like antennae again.
Onto the next project.
The mount and antenna was installed at the hood rear lip edge in front of the cowl on the passenger side as near to the outside as possible to not interfere with my Ditch Light.
Before I do any cutting of the antenna element, I better check the provided cutting chart and see what is recommended for the CB freqs and the chart indicated a cut at the 49" mark for 27 Megs. I measured the element and it was already 49". In checking the VSWR, right off the bat my Rig-Expert indicated an initial VSWR at just a tad less than 1.5:1 on Ch. 1 and a little less than 1.2:1 on Ch. 40. Since, I can't stretch the antenna element, I elected to raise the antenna element about a 1/4" in the antenna ferrel. That worked pretty good but, based on my readings, I elected to drop it a tad back down and I ended up with 1.05:1 across the board. I'll just have to live with that.
Next will be the comparison test and see what would be the difference in the Farz between the Firestik II and the C27 antennae. However, I have to wait until my friend gets back from Colorado next week so we can use the same Avalanche vehicle and I need to get another C27 antenna, so we are testing with a like antennae again.
Onto the next project.
K6GBW
Member
That looks great! That SWR is about as good as you can do, so nice job. What radio are you running? Just curious as I’m contemplating putting a CB back in my Subaru. I’d obviously get one with AM/FM and DNR. It would be great to have SSB but I’m not aware of any small radios that also do SSB. Please post an update when can.
I find antennas mounted on Mojave hoods work better than Rubicon hoods.
Why is that? Mojaves have a real metal hood?
Tuned suspension, reinforced frame and higher geared low range on the Mojave = better desert fun. You live in the desert, shoulda bought a Mojave. I lied about the antenna.
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Davidbt
Member
So, you think that Arizona is all sand and cactus?Tuned suspension, reinforced frame and higher geared low range on the Mojave = better desert fun. You live in the desert, shoulda bought a Mojave. I lied about the antenna.
A lot of it. It also has big mountains and big holes in the ground.
niceguy71
Active Member
you got me.... I was really scratching my head on that one!Tuned suspension, reinforced frame and higher geared low range on the Mojave = better desert fun. You live in the desert, shoulda bought a Mojave. I lied about the antenna.
niceguy71
Active Member
that really looks fantastic! I can't wait to see how it works..... I "think" that is the best CB antenna you can put on a jeep.... why do you need to put the same antenna C27 on the avalanche? why not put a really good and cheap magnet mount on it just for testing??? ... I hope your CB range test shows what a CB can really do... maybe I'll be surprised and the Firestick will be better.... but I'd love to see the C27 and a really "known" great working magnetic cb antenna,... a magnetic antenna on the roof of the avalanche will be higher and centered... meaning it will recieve and transmit in all directions.... if you do the C27 on both hoods you're going to be more directional
whatever you do it will be great to see the results
Tram 3500 at Target for $55 bucks with free shipping... it's certainly not the best antenna.... but for testing that jeep I think it would work really well..... again beautiful jeep!
Davidbt
Member
I would say it's more rocky myself. I know there's several sand dune areas, but for most of Arizona, I'll take my TJR.
niceguy71
Active Member
I hope I didn't discourage you from the Radioddity CS-47????? putting out 8 watts is HUGE .... and 15 watts on FM that has got to kick some serious ass.
you will never get anything smaller... and for under a $100 bucks... I wouldn't hesitate... I'm sure you will get used to the squelch as a up and down button... ( I only used it for a couple hours.... and really just couldn't get used to it.... but that's just me)
if you buy it on Radioddity it's $75.99 with very cheap shipping... shipping to Massachusetts was only $500!!!!! that is an AWESOME DEAL
Radioddity CS-47 CB Radio | 7-Color LCD Display Mic | AM/FM | RF Gain
Radioddity CS-47 has most of the features common to other CB radios, including an adjustable backlit seven-color handheld microphone, built-in microphone speaker, AM/FM modulation, VOX, and active noise cancellation. It is a very cost-effective one hander CB radio for outdoor and off-road scenarios.
www.radioddity.com
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