- Видео 9
- Просмотров 37 660
M0TEF
Добавлен 7 апр 2015
Retevis A61 / A1 VHF UHF
Real world testing of, and insights into the Retevis A61 / A1 VHF UHF Handheld FM Radio IP67 rated radio with built in GPS
Available from
Official Website: tinyurl.com/2t7tpbfs
Aliexpress: www.aliexpress.com/item/1005006532756456.html
Amazon UK: www.amazon.co.uk/dp/B0CTK9MWF9
eBay: www.ebay.com/itm/186281759231
#retevis , #RETEVISA1, #RETEVISA61, #RETEVISAmateurRadio #Together
Available from
Official Website: tinyurl.com/2t7tpbfs
Aliexpress: www.aliexpress.com/item/1005006532756456.html
Amazon UK: www.amazon.co.uk/dp/B0CTK9MWF9
eBay: www.ebay.com/itm/186281759231
#retevis , #RETEVISA1, #RETEVISA61, #RETEVISAmateurRadio #Together
Просмотров: 448
Видео
Retevis A61 / A1 VHF UHF FM Handheld Radio IP67 rated with built in GPS
Просмотров 4636 месяцев назад
Retevis A61 / A1 VHF UHF Handheld FM Radio IP67 rated radio with built in GPS Available from Official Website: tinyurl.com/2t7tpbfs Aliexpress: www.aliexpress.com/item/1005006532756456.html Amazon UK: www.amazon.co.uk/dp/B0CTK9MWF9 eBay: www.ebay.com/itm/186281759231 #retevis , #RETEVISA1, #RETEVISA61, #RETEVISAmateurRadio #Together
Yaesu FT-897 Audio noise reduction mod
Просмотров 18 тыс.5 лет назад
Noise reduction mod on the Yaesu FT-897. On my Blog - m0tef.blogspot.com/2019/04/modifying-ft-897-to-get-best-from-it.html I have been using my ft-897 for a while now, the main rig has a fault and I have been far too busy to get it sorted and repaired. I found it was not quite right, I have been spoiled by using quality receivers over the last few years and I couldn't quite put my finger on wha...
Homebrew Mini paddle
Просмотров 2,8 тыс.7 лет назад
Inspired by my palm mini paddle I wanted to have a go at a simple iambic paddle that I could use portable with my kit. The ideal companion to my QRP portable kit and the HB-1A and HB-1B rigs and basic wire antennas. It is nothing fancy and made using scraps of welding rod, M3 nuts and some PCB off cuts. Once secured to the desk with blue tack it stays pretty still. Total cost was nothing but a ...
Pixie 2 QRP Ham Radio Kit Modified On Air
Просмотров 7 тыс.8 лет назад
Modified pixie radio working on 30m with details of the mod, some examples of performance and receiving using a short wire into a tuner. Power is from a 12v SLAB and the rig is just out of production and in testing. More examples to follow. You can find more information on my blog at m0tef.blogspot.com
You Kits HB1B radio portable QRP at the beach
Просмотров 2,3 тыс.8 лет назад
A short video of the YouKits HB1B radio in use on Mablethorpe Beach on the East Coast of the UK using the 20 meter band on CW making use of the low QRP power this rig delivers. The radio was powered by a 12v SLAB and the antenna was a 40m end fed half wave that has a matching unit at the feedpoint for 20m and 10m also. My morse skills are limited so I did not make any contacts while recording t...
M9K IOTA contest 2015 M0SIY op on 20m
Просмотров 3799 лет назад
M9K IOTA contest 2015 - M0SIY op on 20m. Running with the FTDX-5000 into the hexbeam and logging with N1MM
QRP Frog Sounds Transceiver
Просмотров 4,4 тыс.9 лет назад
This video shows the Frog Sounds QRP transceiver being used by Keith G0RQQ as we operate under the callsign M0TEF/P from a local parking area. We didn't have any contacts but we did get reports via twitter of our signal but that a very large signal nearby made it hard to copy us. The RX of the receiver has been recorded form the headphones, I apologise for the poor quality, but it gives you a g...
Such a great company programming it from the front panel frequencies out in the field is the greatest thing ever thank you for sharing this video❤
It makes a nice change to be able to set a memory quickly in the field
Just ordered one. How do you modify it to TX outside the amateur bands? Is this something you can do in the CPS? Or does it come unlocked? Thanks.
It isn’t something I have tried yet. Some similar models are done with a button combination during switch on. I hope you enjoy it.
@@m0tef901 just watched a Russian reviewer and although I couldn’t understand him, it looks like he might have done it by pressing the PTT while turning on the radio. Can you try this and report your findings please.
@@jamesfairhurst8525 I did try it quick this morning and I didn’t manage to find the right combination of keys. I will keep experimenting and report back if I have any luck with it.
@@m0tef901 Thank you. Should be getting mine in the next few days. Try holding down PTT, 8 and then turning on.
@@jamesfairhurst8525 nice one. I will give it a try. I hope you enjoy it.
Don't recommend buying directly from Retevis, they won't exchange or repair a bad radio I bought directly from them. Buy from someone that has good return warranty.
Да ладно,шутить изволите!,я с таким "передатчиком" экзамены сдавал,так дальность была 100 метров,игрушка бл...!!!🐕
did the mod a couple of weeks ago. happy happy happy. did reverse it for a moment today and the stock audio was horrible :):) its back in for ever now
My question is...why did Yaesu allow this model to hit the market with so many improvements needed and quickly discovered by technicians in the field? In other words, they tossed it on the market without regard and just wanted our money!!!
Good question. Perhaps sometimes good enough isn’t the same as the best possible.
What you pay new for these radios, makes you wonder why the manufacturer can't place these components inline. I mean let's face it it does not cost very much.
how much more is the amp draw with that mod ?
I haven’t taken any measurements but the data sheet indicates that the addition to the circuit is just there as a high frequency cut off filter.
Great little paddle, I've made one out of PC board years ago for the shack, still use it today center paddle center, di and da on ojutside screws . love your design and build looks good and sounds and works great tnx fer building it and showing it to us. 72 gud dx de Ellis /WA1RKS
How much does the frequency of a quartz crystal change? Up or down?
It swings about 2khz either side of the crystal frequency using an inductor and capacitor to pull the frequency.
@@m0tef901 What inductor did you use?
surdinkalol I can’t recall what I used, this version has a crystal and a ceramic resonator on a switch and I am almost sure VK3YE had a video on here about doing that and mentions the details, it could be worth a search, my memory on this project is a little faded for detail now.
Thanks for the info Alistair! I run both a FT-897D as well as a FT-1000MP Mark-V and just purchased a FT-991A with my stimulus check I received from the U.S. government. I'm definitely a Yaesu fan! I use my FT-897 almost exclusively for digital modes because of it's excellent cooling system! It runs very cool even if I get a bit long-winded on PSK31 or FSK-105 Hell modes. I love my Mark-V Alistair, my second one, the first got hit by a direct lightning strike, I have a post about it on my blog at ku4gw.blogspot.com/2011/06/may-22nd-2011-lightning-strike.html if you'd like to check it out. I wish my Mark-V had all of the filters like yours you lucky rascal! I just started following your blog also. Lots of good info. I have not made a post on my blog in long time now, too many irons in the fire here, but I sure am having a blast on amateur radio, starting my 24th year in the hobby October 16, 2020. If I make it until the next one I'll become a member of the Quarter-Century Wireless Association. I'm also into QRP portable operation using either a Ten-Tec R4020 or a Hendricks PFR-3A most of the time. I may start using my FT-897D portable some now that I bought the FT-991A. My FT-897D has a problem on VHF, the transmit gets stuck and if I tap the mic key several times very fast it always unkeys, but it's definitely annoying, especially when using repeaters. I was here on RUclips looking for a possible fix and ran across your video above. If you happen to see a possible fix for that problem on the FT-897D please drop my a note. I'm good on QRZ. Thanks in advance and very 72/73 de Cliff, KU4GW - SKCC#652C, NAQCC#1491, Flying Pigs QRP International#1183, 4SQRP#536, FISTS#16001, A-1 CW Club#3440, Feld Hell (Hellschreiber) Club#0062, EPC#27746, 30MDG#0865, Digital Modes Club=DMC#6362, QRPARCI#15877, Elected member of the ARRL A-1 Operator Club since 11 April 2012.
Thanks Cliff, I will have a look on the blog, I too am a bit behind on keeping my posts going, life is busy here too. I will drop you a message and a link with a possible fix for the 897 that I have come across recently.
Hi, watch my Noise Reduction Mod : ruclips.net/video/IsRiFtittck/видео.html
Nice, portable device.
Did this mod yesterday (added a switch to see the difference), it does cut off the top end a fair bit - also (obviously) reduces the audio output from the amp as well so you have to turn the volume up an 8th more to get the same output - slightly easier to listen to, but not by much
Thanks for the comments Ian, I too noticed a slight drop in audio output, more on the external speaker I use than internally. I have quite a high noise level here so notice a much larger difference than I might do away from the home QTH, but now I may add a switch to experiment more.
Hi, sounds great! How have you connected the capacitors together? They both look polarised and connected - + - + ? Or does it need to be or act as a single non polarised capacitor?
paisteformula6021 I can’t recall from memory but the link to the mods online gives very detailed information on the methods.
Nice to see my WEB inspired someone. Cheers, 73 Petr OK1FIG
Petr Malý this is a seriously good, and simple, little mod that has changed my radio for the best. Thanks for sharing the information. The best part of what do is to share the knowledge we gain and the results we found from implementation.
You inspired me also, I have bought the tantalum caps to do the job some time ago, nice to hear it in action on here
Yeppers. moved to Tennessee from ohio. My shack was hit direct. Took out all I had. To ragchew I got a pixie with a sack of xtals. Got addicted and own several on various bands. Ah I member to toss that tail out the window. When I hear the elves bowling hi hi dr kv4li
You will like it. When the window is open. Snag SIG's right and left you will. A set of battery went well as I worked 30m pixie. 73 de kv4li
How specifically did you utilize the ceramic resonator to be able to tune around the band?
You will find a great video by VK3YE here that explains the mod ... ruclips.net/video/roAc4c1a-a0/видео.html
pixie 2 the best
Love that sound... with no filters..
Super! :D
nice!!!! day sunny like QRP 73
HI, looks like mine kind of faded on the audio when I have the stereo headphones plugged in... what I had to do was hook up a small amp to hear..
buy a 10w audio amplifier
I didn't hear anything !!!
Chris Gladman as in the description the audio poor and is recorded from headphones you will need to turn up the volume to hear the CW
Check out this video on RUclips: