Search found 279 matches

by Radio guy
Thu Mar 30, 2017 3:13 pm
Forum: Communications
Topic: Tacticool Communications Unit (TCU) on a trailer
Replies: 2
Views: 865

Re: Tacticool Communications Unit (TCU) on a trailer

LA County has an amount of Barrett 2050 HF radios and they are real pieces of crap. If you are anywhere within a few miles of an AM broadcast transmitter the receiver gets blitzed and the radio is completely unusable. I hope they junk the Barrett radios in the TCUs and get something else. I also hop...
by Radio guy
Thu Oct 13, 2016 5:31 pm
Forum: Communications
Topic: cheap 20 watt portable Chinese HF rig
Replies: 8
Views: 2078

Re: cheap 20 watt portable Chinese HF rig

I've owned a Yaesu FT-817 and an Elecraft KX3 w/2m option and an Elecraft KX2. Except for the 440 band in the Yaesu that is not available in the KX3, I can say the KX3 is easily 20X the radio of an FT-817 in performance and features. It cost a bit more but what you get in the KX3 is night and day be...
by Radio guy
Tue Mar 15, 2016 11:40 am
Forum: Communications
Topic: Traill Friendly radios, new stuff 3/31/18, MFJ has You Kits
Replies: 94
Views: 14388

Re: Traill Friendly radios 3/11 new content - photos

More good info! For the 100w version I use a dipped silver mica capacitor 500v rating with a value anywhere from 100pf to 150pf works fine. You can find the caps on Ebay cheap. For a 400w peak SSB version use a single FT-240-43 core and for up to about 800w SSB use two stacked FT-240-43 cores. For t...
by Radio guy
Tue Mar 15, 2016 9:44 am
Forum: Communications
Topic: Traill Friendly radios, new stuff 3/31/18, MFJ has You Kits
Replies: 94
Views: 14388

Re: Traill Friendly radios 8/3 added ant tuner stuff

Whenever I see mention of an end fed antenna using a 9:1 or even worse, a 4:1 balun I have to chime in. The various versions of end fed antennas using non resonant lengths of wire anywhere from 31 to 117ft suck, they are horrible little things that don't work well at all and in most cases your coax ...
by Radio guy
Sun Feb 14, 2016 11:44 pm
Forum: Communications
Topic: Anytone/Baofengtech "8R" series multi-certified radios
Replies: 160
Views: 14075

Re: Anytone/Baofengtech "8R" series multi-certified radios

The FCC yanked certification of the Anytone TERM-N-8R series so they cannot be legally used on GMRS, MURS or Part 90 and if anyone is still selling them and advertising the old and revoked certification, they are lying to make sales. Radio Guy Snip... this link http://qrznow.com/anytone-termn-8r-dua...
by Radio guy
Sun Dec 13, 2015 12:03 pm
Forum: Longarms - Shotguns and Rifles
Topic: AR-10's, what to avoid?
Replies: 35
Views: 1958

Re: AR-10's, what to avoid?

I was originally shopping for a Colt 7.62 AR then read a few magazine articles about the Ruger SR-762 where a gun school in TX was using them for long range precision training and the graduating students were consistently hitting targets out to 1,000yds with them when topped with 3X15 or 4X20 power ...
by Radio guy
Wed Dec 09, 2015 10:34 pm
Forum: Communications
Topic: Solar and LiFePO4 for Radio Gear
Replies: 23
Views: 2683

Re: Solar and LiFePO4 for Radio Gear

In my experience, for powering 12V radios in the field up to 100W the A123 Systems 12V7 pack is the best thing going. Its a LiFePO4 rated at 5AH with built in cell balancing that will charge from a 14V source with no charger, it has a 30A fuse and low voltage cutoff to protect the cells. Its also ho...
by Radio guy
Tue Dec 01, 2015 12:56 pm
Forum: Communications
Topic: New Chinese radio - 9 band HF, CW/SSB and 15 watts
Replies: 7
Views: 2758

Re: New Chinese radio - 9 band HF, CW/SSB and 15 watts

Interesting and cute little radio. But something looks familiar, wait, the case shape, size, tuning knob and even the clear plastic window look like a direct rip off of the Elecraft KX3. I know the KX3 is about twice the cost (I have one) but its probably 50X the radio considering it has one of the ...
by Radio guy
Thu Oct 01, 2015 7:57 pm
Forum: Communications
Topic: Modustollens' 20m Home-made HF Dipole
Replies: 5
Views: 1376

Re: Modustollens' 20m Home-made HF Dipole

A 5/8 wavelength or .64 wavelength vertical may have a slight advantage in gain over a 1/4 wave ground plane or 1/2 wave vertical dipole but it requires some matching and usually a ground plane to achieve the best results. I think you'll find it will become complicated for a portable antenna. A hori...
by Radio guy
Sat Sep 19, 2015 4:31 pm
Forum: Communications
Topic: Need some Freq. help.
Replies: 16
Views: 1067

Re: Need some Freq. help.

Every country has its communication rules and laws and if you don't have a reciprocal ham license in hand your radio could be confiscated as you enter the country. There might be license free radios in the countries your visiting but I'm not familiar with what has been mentioned.
Radio Guy
by Radio guy
Tue Aug 04, 2015 8:26 am
Forum: Communications
Topic: Traill Friendly radios, new stuff 3/31/18, MFJ has You Kits
Replies: 94
Views: 14388

Re: Trail friendly radio = disaster radio?

The FT-817 is an ok little rig, not great but ok and I had one for many years. By the time you add all the optional filters to improve receiver performance and add an antenna tuner your probably getting close to the cost of a KX3 but the KX3 will still be 50 times more performance and features over ...
by Radio guy
Mon Jun 15, 2015 12:13 am
Forum: Communications
Topic: My anytone TERMN-8R broke :(
Replies: 22
Views: 1758

Re: My anytone TERMN-8R broke :(

It looks like the Anytone AT-3318UV-D would fit your needs. http://www.wouxun.us/item.php?item_id=354&category_id=64 Its a VHF/UHF 136-174MHz @ 5W and 400-520MHz @ 4W with part 90 certification and has AM and FM broadcast reception plus AM SW and VHF AM aircraft reception. You can assign channels to...
by Radio guy
Sun Jun 14, 2015 9:04 pm
Forum: Communications
Topic: My anytone TERMN-8R broke :(
Replies: 22
Views: 1758

Re: My anytone TERMN-8R broke :(

I had a VX-5R but it seem like it was 20yrs ago, good in the day but getting a bit outdated. prcguy Inexpensive radios are fine as backup/spare radios. But they shouldn't be your only radio. On the quality side of things I have an FT-60R and a FT-250R. One of the things that turned off of the VX3 wa...
by Radio guy
Fri Jun 12, 2015 9:19 am
Forum: Communications
Topic: My anytone TERMN-8R broke :(
Replies: 22
Views: 1758

Re: My anytone TERMN-8R broke :(

Sorry to hear about the broken radio and hopefully Anytone Tech can help you out. On the topic of cheap radios, I've owned many of the "cheap" Chinese radios and their are drastic differences between the various companies and models. The cheapest Baofeng radios are basically a single chip radio with...
by Radio guy
Thu May 14, 2015 7:11 am
Forum: Communications
Topic: Anytone/Baofengtech "8R" series multi-certified radios
Replies: 160
Views: 14075

Re: Anytone/Baofengtech "8R" series multi-certified radios

FRS cannot have a removable antenna, so that will never fly on these radios. I suspect GMRS, MURS and part 90 will be approved. Radio Guy They can just modify the firmware to limit power to 500mw on FRS and bandwidth to 12.5 and then refile the application. Note that the FCC did not complain about t...
by Radio guy
Sat May 09, 2015 9:53 pm
Forum: Communications
Topic: Traill Friendly radios, new stuff 3/31/18, MFJ has You Kits
Replies: 94
Views: 14388

Re: Trail friendly radio = disaster radio?

I do an amount of QRP with a KX3 and previously with an FT-817 then an Ft-857 with the power turned down. I had a Buddipole for years and only used it about 3 times, it was very difficult to tune in the field without an antenna analyzer and just too much stuff to deal with and its a lot of $$. But i...
by Radio guy
Sat May 09, 2015 5:37 pm
Forum: Communications
Topic: Traill Friendly radios, new stuff 3/31/18, MFJ has You Kits
Replies: 94
Views: 14388

Re: Trail friendly radio = disaster radio?

The KX3 with built in antenna tuner and optional protective side panels with handles and Lexan cover is really bullet proof and will outperform radios costing many thousands of $$. There is also an optional VHF/2m module that gives you about 3w of transmit power. Another plus of the KX3 is its very ...
by Radio guy
Fri Dec 19, 2014 2:25 pm
Forum: Communications
Topic: Motorola AXU4100 help
Replies: 3
Views: 494

Re: Motorola AXU4100 help

The US 70cm ham band is 420 to 450MHz with most repeater inputs and outputs between 440 and 450MHz.
Radio Guy
TacAir wrote:these work in the 435 - 480 Mhz band. TH
he US ham band (70cm) is 442.00-445.00, so you could program the 10 channels for local repeaters...
by Radio guy
Sun Dec 07, 2014 8:46 pm
Forum: Communications
Topic: HF Email, no Internet
Replies: 14
Views: 1303

Re: HF Email, no Internet

Harris has a program called "tactical chat" which will send email type msgs between HF radios and I believe it can send and rcv msgs through the Internet if one radio in the system has an Internet connection. You can send to a specific radio or to all listening stations. I have a copy and the Harris...
by Radio guy
Thu Nov 06, 2014 9:51 am
Forum: Communications
Topic: Question about FCC Licensing
Replies: 19
Views: 2846

Re: Question about FCC Licensing

Since the OP is using Baofeng type radios you would need to lock out the keypad after programming to be completely legal for commercial use. Its also a good idea so users don't accidentally change a parameter or operate outside what the license allows. I have Baofeng UV5/F11 versions which allow key...
by Radio guy
Sun Oct 19, 2014 4:34 pm
Forum: Communications
Topic: TYT TH9000D
Replies: 4
Views: 650

Re: TYT TH9000D

I misread the post and was commenting on the TYT 9800 quad band. Oops.
Radio Guy

gary in ohio wrote:Also note the TYT is a single band radio where the 8900 is a 4 band radio.. Very different radios..
by Radio guy
Sat Oct 18, 2014 8:38 am
Forum: Communications
Topic: TYT TH9000D
Replies: 4
Views: 650

Re: TYT TH9000D

Ive had one for about a month and its working very well. I also have a Yaesu FT8900 and the TYT is a very close clone but around $200 less. The TYT has a few more features than the Yaesu like the ability to receive CB and cross band it to some other band, wider band receive, a voice scrambler, etc. ...
by Radio guy
Sat Oct 11, 2014 10:02 am
Forum: Communications
Topic: Question about FCC Licensing
Replies: 19
Views: 2846

Re: Question about FCC Licensing

I've been in the communications business for about 35yrs, have owned and rented commercial repeaters and provided repair, install and programming for customers. I also worked with one of the owners of Bearcom before there was a Bearcom. With that out of the way, the FCC rules are very clear about fr...
by Radio guy
Thu Oct 09, 2014 12:49 pm
Forum: Communications
Topic: Question: Amateur Digital modes on VHF/UHF?
Replies: 10
Views: 994

Re: Question: Amateur Digital modes on VHF/UHF?

Many companies besides Motorola make DMR radios and the Chinese are producing some fairly cheap DMR radios. Connect Systems has the CS700 which is about $250 street price. Radio Guy What kind of License fees do you need to pay to Motorola for the DMR rig? Amatuer DMR radio and repeater use has no fe...

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