[Wouxun KG-935G receiver front end.]

I ran a simple receive test with three radios that were off frequency by only 12.5Kc from the transmitter.

The Wouxun "KG-935G" was able to filter out the off frequency station. 
The Anytone "AT-D878UVII plus" and the Baofeng "UV-82HP" both failed.

Ken WQXQ522

 

[Newbie from OH-IO]

Welcome

 

[Midland MXT575 Drops Next Week.]

33 minutes ago, WRFE959 said:

For my base installation, I even put a WIFI power outlet on the power supply.  So when I am around town, if I want to contact Unit 2, I can turn on the base station from my phone, and call out to my base station from the mobile.   The 575 returns to the last state, so powering on the power supply turns on the 575 to the last channel.   

What a cool idea!

[Antenna tuning question]

I just got a 1486 last week and I cut it for 462 using a nano-VNA. 
The sections that need be to cut look like they are brass.  I cut them accurate and clean just using my scroll saw

So far performance is pretty good.  The chart was pretty accurate for me.. In the end my lengths were exactly what the chart suggested for 462. 
I have heard that many people found that the chart was off for them so be careful not to cut too short! 
It is easy to be off by a mm or so depending how you hold your ruler to the base of the coils. I measured with the butt of my zero clearance ruler touching the base of the coil.

 

.

[RT97S wideband operation]

3 hours ago, wayoverthere said:

I forget the page number now, and I may be reading it wrong, but was the chart earlier in the report (page 15 or so?) focused on spurious emissions showing the spurs were higher output than the actual in band signal?

The spurs are in section 5.9 starting on page 23.  I don't know,  I doubt it though since the radio got a "PASS". 
Hey thanks for the link on the GRANT..  It took me a while but I finally figured out what to click in their search results to see how you got it Lol!
This is a great thread.. lots of info.

Ken

[GMRS-50X1 Display]

1 hour ago, KAF6045 said:

Nothing in the manual... You may just have to look for the highest contrast background/foreground color pairs that can be set to the fields.

At least it's an LCD... My Icom ID-5100 appears to have pressure sensitive (ie: it does not use I/R emitters/receivers on the sides of the screen to detect "touch") layer on an e-Ink display (black/white). Even on high brightness it disappears under polarized sunglass (which is not helped in that my prescription when driving is the DISTANCE on, I'd need to put on my computer prescription (fingertip just touches monitor when arm stretched forward) to actually read some of the markings.

Lol!  Had to chuckle over that one..  Yes, Me too!   The 5100 display drove me nuts when I mounted it in my vehicle.  Exceptional radio except for the screen and the mic connector location.. 

 

[RT97S wideband operation]

The report I pulled up for the retevis RT97S was at https://fcc.report/FCC-ID/2ASNSRT97/4720800

On page 48 of that report it issued a bunch of "PASS" statuses for a test of 5kHz deviation..

The numbers there look like that radio reached close to the limit of 5kHz      ...No doubt I am missing something somewhere...

Ken

[RT97S wideband operation]

6 minutes ago, colbypr said:

I searched it on fccid.io. I also searched it directly through the FCC's website to confirm the information was correct. All you need is the FCC ID which is fairly easy to get. Its listed either on various websites or the retailer's sites. In the case of the RT97S, its listed directly on the mygmrs shopping page as a certified transmitter. It just doesn't seem right that its listed as both wide and narrow but the grant only specifies narrow.  All of the Wouxun GMRS radios I searched have both 11K03FE and 16K03FE emission designators in the grants, but none of Retevis GMRS stuff I searched did, even if it advertised it as narrow and wide capable.

The link direct to the FCC is here: https://www.fcc.gov/oet/ea/fccid

Thanks. 

I am reading through the report for the Retevis RT97S and just like you said it is 11K0F3E specific unless I am missing something...

Ken WQXQ522

 

 

!  

[RT97S wideband operation]

I googled the code from the back of my KG-935G (wvtwouxun26) and was able to zero in to an FCC site fccid.io.

The test report is this  https://fccid.io/WVTWOUXUN26/Test-Report/Test-Report-5372630

The screen shots below are samples in that report of the audio response and the deviation response for both the wide and narrow sections of the GMRS band.

[RT97S wideband operation]

2 hours ago, colbypr said:

I was looking at the Retevis RT97S and noticed the specifications listed both narrow (11K03FE) and wide (16K03FE) capabilities. The FCC grant for the device only shows the narrowband 2.5khz designator, 11K03FE.  Has anyone else noticed this? I couldn't find any other grants for their company for the portable repeater that listed the wideband 5khz emissions designator (16K03FE), even though the programming software and literature for the radio clearly let you set Wideband or Narrowband.

In fact, I checked a bunch of their other GMRS transceivers and none of them appear to have the wideband emissions designator grant, only narrow.

 

Very interesting!  How did you look up the FCC grants for the various devices?  

[Quick ? from a newbie]

Well somehow that post got screwed up.. 

There is a great Youtube channel called NotaRubicon Productions and he has more than one video about the UV9G .. Here is one:

 

 

[Quick ? from a newbie]

1 hour ago, Guest Saynt said:

 

1 hour ago, Guest Saynt said:

Is the BAOFENG UV-9G a good GMRS radio for beginners?

There is a great Youtube channel called NotaRubicon Productions and he has more than one video about the UV9G .. Here is one:

 

 

[Quick ? from a newbie]

Congrats on the license!

The GMRS channels 15-22 are shared simplex/repeater (input freq) service.  

You can program the UV82HP for correct wattage etc for FRS and GMRS ..  "violation" I think would be FCC type acceptance..

 I have the Wouxun KG-935G and I also have the UV82HP.. I use the UV82HP for ham and the KG-935G for GMRS  

[I'm still a newb but a big update for me - I'll have the KG-1000G installed in my Jeep in the next few days!]

On 8/7/2022 at 6:34 AM, WRFH675 said:

Thanks for the info! Would this be a good analyzer? https://a.co/d/3mNnb22

I have a similar one and it does a good job for me.. https://www.amazon.com/gp/product/B085CFHTBM

There are some good Youtube videos like this one that explain how to use them: 

 

[Lightning!]

Has your house or radio antenna ever been hit by lightning?

We had a violent storm float through here yesterday (in Sierra Vista AZ), and I saw this amazing damage report from someone who lives close by and I thought it was worth sharing here.    BTW, yes about 20 years ago I had a lightning strike that blew up my Comet antenna and when I was a kid in the 1960s lightning hit my tent pole.. Luckily I was not inside the tent but I was close!   Ken WQXQ522

".....That VERY LOUD clap of thunder you heard during the thunderstorm tonight was the sound of lightning striking the chimney chase cover on our house (in Country Club Estates)! It traveled down the chimney and blew a hole in our wall."

[KG-935G Scan behavior]

Here is a short clip of my KG935G running a scan and it never stops unless there is a legit signal. 

My scan has no weather alert or priority..  Make sure those are not enabled. 

Ken WQXQ522

 

 

 

[KG-935G Scan behavior]

Very strange! 
You say that if you manually flip from one channel to the next there is zero trace of any silent signals but if you let the radio scan it always finds rogue signals that disappear when you stop the scan...   That is bizarre. 
I would send a video of this to two way radio or whoever you purchased it from.   
Too bad you don't have another KG935G to establish a base line.    Good Luck!

Ken WQXQ522

 

[KG-935G menu item 53 SIM-RX ?]

5 hours ago, KAF6045 said:

I don't see any way to access firmware version. Note that SIM-RX does not appear in the programming software for the radio.

Chirp has a beta version that I tested a few days ago and this is what I saw.  It looks like FW version?

Ken WQXQ522

[SWR High on DB25-G]

So,  I just had another look at the manufacturers web site and wow! They have a photo of the exact mounting arrangement that you used with the antenna hugging the side of the vehicle...  That makes no sense to me but who knows the product like the manufacturer?  Still I would reach out to them and ask about why the SWR.  

[SWR High on DB25-G]

So.. I was unfamiliar with the antenna and thought maybe I wasn't seeing what I was seeing..  That is why I asked. But, I googled the antenna to see what it looks like in the catalog .. Yes. I am thinking that chief suspect for the high SWR is most likely the interaction of the car body with the antenna.  Thanks for the pics!  

Ken WQXQ522

 

[SWR High on DB25-G]

 Is that antenna is next to the body of the vehicle?  

Ken WQXQ522

[KG-935G menu item 53 SIM-RX ?]

YES!  (Just tested).  Thanks!

[KG-935G menu item 53 SIM-RX ?]

My KG-935G has a menu item not described in the manual labeled "SIM-RX"
It is set to "ON" . 

Anyone know what it does?

 

 

[What channels, if any, can I communicate on without using my call sign? KG-935G]

Yes, channels 8-14 would definitely be the way to go. 
Low power on the KG-935G on those channels with the rubber duck antenna is same as low power from any Walmart variety FRS radio on those same channels
...so I say why not.   
 

[Wouxun KG-935G "Selective Call" and "Ring"?]

MENU ITEMS 49 and 50 are a little ambiguous for me.    (page 67 in manual)

"RING"?   SELECTIVE CALL?  

Anybody have an example of how these are used?

Thanks

Ken  WQXQ522