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Old 04-03-2007, 05:40 PM   #1
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Any one having An SWR problem with the stock CB Antenna on the Fleetwood motorhomes mine is a 2007.
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Old 04-03-2007, 05:40 PM   #2
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Any one having An SWR problem with the stock CB Antenna on the Fleetwood motorhomes mine is a 2007.
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Old 04-03-2007, 11:29 PM   #3
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Workhorse Dan,welcome to iRV2.com. We are glad to have you join us here and we look forward to reading of your adventures and experiences. Sorry I cannot answer your question but I am sure someone on this forum can. I will short cut this to the New Members section and see if we can attract some attention on this issue. Good luck and enjoy the website. Please keep us informed on the progress ou mak or if you have any other questions. Thanks
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Old 04-04-2007, 02:27 AM   #4
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Go here; maybe this will help:
CB Antenna Tuning
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Old 04-04-2007, 09:22 AM   #5
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1. There is no such thing as a no-tune CB antenna. The characteristics of the radio affects the SWR, so the antenna has to be re-tuned when the radio changes.

2. If you can't get the antenna tuned with an acceptable SWR (2 or less) I would replace the antenna.

3. It is not clear to me that the pre-installed antennas are useful. An RV with fiberglass over wood walls (there is a metal frame but it doesn't count) and a rubber roof just does not have enough metal to make a decent ground plane. In addition, CB needs a pretty large ground plane.

4. The ideal antenna for a RV is a no-ground plane antenna that is tip fed. This allows mounting on the side of the RV and still get decent coverage.
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Old 04-04-2007, 03:48 PM   #6
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This tends not to be a Fleetwood exclusive problem,so I'm linking this thread over to the CB and Ham sub-forum for better exposure.

Also, welcome to IRV2.

Ken
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Old 04-04-2007, 06:10 PM   #7
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TXiceman,

What is the "CB and Ham sub forum", and how do I access it?

Thanks

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Old 04-05-2007, 06:41 AM   #8
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http://irv2.infopop.cc/eve/forums?a=...2&f=2241046292

Give the link a try and your there.
Notice the info at top and what forum your at.
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Old 04-05-2007, 07:24 AM   #9
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Bob, scroll down to RV systems and Technologies. In that block is an underscored link for CB and Ham Radio.

Are you planning to make the National Rally in Branson (July 15 thru.....?)? We are planning to have a working Ham station there for some demonstrations of Ham radio.

Ken
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Old 04-05-2007, 12:51 PM   #10
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TXiceman,

Thanks - I've logged into the sub forum. I won't be at Branson, because I'll be at the Winnebago GNR.

W8RLM - Bob
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Old 04-07-2007, 09:20 AM   #11
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by alvinc:
1. There is no such thing as a no-tune CB antenna. The characteristics of the radio affects the SWR, so the antenna has to be re-tuned when the radio changes.

2. If you can't get the antenna tuned with an acceptable SWR (2 or less) I would replace the antenna.

3. It is not clear to me that the pre-installed antennas are useful. An RV with fiberglass over wood walls (there is a metal frame but it doesn't count) and a rubber roof just does not have enough metal to make a decent ground plane. In addition, CB needs a pretty large ground plane.

4. The ideal antenna for a RV is a no-ground plane antenna that is tip fed. This allows mounting on the side of the RV and still get decent coverage.
</div></BLOCKQUOTE>

As to #1. Presuming the output impedance of the radio is 50 ohms, the radio has NO affect on the SWR.

#2. Actually 3:1 is atill not a bad SWR although some radios may begin to 'fold back' power over 2:1.

#3. Very true.

#4. What is a "no-ground plane antenna that is tip fed."

A little more information, please.
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Old 04-07-2007, 03:27 PM   #12
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I installed a Firestik no ground plane antenna kit. It works great. SWR is 40 = 1.8 and 1 = .4

Go here to see the kits.

On edit: One will need to go to the left side bar and click on the no ground plane kit of your choice. They have several kits. The one I purchased is the Molded Side Mount kit.
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Old 04-08-2007, 11:34 AM   #13
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[QUOTE]Originally posted by GaryKD:
I installed a Firestik no ground plane antenna kit. It works great. SWR is 40 = 1.8 and 1 = .4
[QUOTE]

What does "SWR is 40 = 1.8 and 1 = .4" mean? I am not familiar with that terminology.
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Old 04-08-2007, 05:14 PM   #14
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40 is the channel and 1.8 is the reading on the SWR meter. 1 is the channel and .4 is the reading on the SWR meter. One should try to get the SWR reading the same on channel 1 and 40. I have shortened my Firestik antenna as much as I can. The only thing I can do to get the two readings closer to each other is shorten the antenna cable. Since both readings are okay I have chosen to leave well enough alone. Shortening an antenna cable is an adventure I choose not to take.
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