ICOM IC-7300, AUTOMATIC ANTENNA TUNER MODIFICATION 🤔🤔quick look SIGMA HF 360 ALL BANDS VERTICAL PT/1

Hi, it's time to change the Gainmaster 5/8 wave for another vertical ,so I thought I'd try the sigma HF 360 with a 2 radials,one to improve 40 meters and one for 80,but unfortunately I have to wait another week for the radials to arrive, but in the meantime i got the radios antenna tuner modified as you can see it now tunes in from 5 to 1 down instead of 3 to I ,personally find it very useful improvements as he can see on the videos. Thanks for watching. I'll leave the details if anybody's interested and want some more information,thanks for watching 73s from Rotterdam 👍Hallo, het is tijd om de Gainmaster 5/8-golf te veranderen voor een andere verticaal, dus ik dacht dat ik de sigma HF 360 zou proberen met 2 radialen, een om 40 meter te verbeteren en een voor 80, maar helaas moet ik nog een week wachten om de radialen te krijgen, maar in de tussentijd heb ik de antennetuner van de radio aangepast zoals hij kan zien, hij stemt nu af van 5 naar 1 lager in plaats van 3, persoonlijk vind ik het erg nuttige verbeteringen zoals hij op de video's kan zien. Bedankt voor het kijken. Ik laat de details achter als iemand geïnteresseerd is en wat meer informatie wil, bedankt voor het kijken naar 73s from Rotterdam 👍In proefopstelling als GP !!!(zie andere foto's) FOR MORE INFORMATION..WWW.VENHORST.NL
daardoor minder QRM !!!! (van S9++ naar S3)
Let Op wordt nog verder uitgetest.
SE HF-360 VERTICAL
the SE HF-360 VERTICAL, this instruction sheet should help you get the best from your new antenna. The SE HF-360 consists of 3 Fibreglass vertical radiating sections and one stainless steel top whip and an transformer used to lower the high impedances found at the feed point of the vertical to the 50 Ohms that is required by your transceiver. Specifications: -Type End fed vertical antenna -Frequency TX/ 3.5 -52MHz (with ATU) RX/ 1.8 -55MHz (with ATU) -Max power 400 Watts -Impedance 50 Ohms -Connector SO-239 -Height 5.5 metresAssembly and Mounting: -Before you install your antenna, select the most available open site away from power lines and telephone lines. The antenna can be mounted at ground level or at height so giving you many options on installation. -Assemble the fiberglass elements ensuring that the lock washers are used and that the steel whip is inserted into the topsection fully and that the two grub screws are securely fastened. -Mount the antenna using the U-bolt or other attachment. -At the top of the base cradle place the three nuts and bolts into the black moulding and secure. -Attach the PL-259 plug on the 50 Ohm feeder coax to SO-239 socket on the transformer at the base of the antenna. -We recommend that you should always earth at the tuner point rather than at the transformer for best performance and safety. Pack contents: 2x Fiberglass poles. 1x Fiberglass pole with base cradle + transformer attached. 1x 1.35 metre steel whip 2x Lock washers 3x Top moulding nuts and bolts + washers. 2x U-Clamps + washers and nuts. 1x Alan key for top whip. Please note: This antenna is for amateur radio and broadband receiving use. Do not use other than for the purpose of antenna. Please use the antenna within the standard specifications described in this manual. Failure to do this may cause heat and breakdown of the transformer unit.
Warning: High RF currents are present on the antenna when transmitting. DO NOT TOUCH.
SE HF-360 VERTICAL

[@dennisdeckmann9336]

Wonderful, another Super CBer…

[@marcoplacidi9975]

I just did my 7300 working great , but doesn’t mean can make miracles. Now I can tune every where with my g5rv and cobweb

[@2E0RME]

Very interesting, thanks for sharing. In regards to what the engineer said about the DX10 being better... The DX certainly has good performance, but the menu system is convoluted and the dial/button design around the VFO is a complete disaster if you have large hands/fingers. I personally find that the DX10 has a "warmer" audio than my 7300 (and 590SG) that no amount of EQ fiddling can fix. This warmer audio is an inherent sound of the DX10 that either falls within the listener's register or does not. My older and somewhat damaged ears (too many night-clubs in my youth I suspect) prefer the brighter sound of the 7300, although I suspect younger ears might find the 7300 "thin" sounding compared with the DX10. So I would say it really depends on what is meant by "better". 73

[@giulianoggg2035]

Great video explanation!, what about the earthing did you ground it eventually? and with the + Kit 40/80 how is it performing? thank you

[@giulianoggg2035]

Sigma 360X How did you fix the 1, 35 metre steel whip at the top? How deep inside? There is no mention in the manual of what to do...maybe for SWR adjustment how?

[@Bernard-John]

Hi,to be honest, I can't remember but it's probably for the swr, plug in a meter and see, succes, 73s from Rotterdam 🙏

[@M7XCB]

I did the same modification works well for me.

[@Bernard-John]

Hi,I am also pleased with the modification,i am curious how it handles the Sigma HF 360 antenna, I didn't think the ALC upgrade was for me,,, because I use a studio microphone,,,,thanks and 73 from Rotterdam 👍

[@chazwozza67]

Rather use better aerials than use a mod like this

[@M7XCB]

@@chazwozza67 49 to 1 with 134 feet wire no ATU needed I've put the Icom to factory. I was using RGV5 I couldn't get the swr out of the red zone the why I did the mods it worked it was good thing at the time.

[@Bernard-John]

@@chazwozza67 Hi,sometimes you can only do the best with what you have,,🤔the hobby is expensive enough,,,🙄but thanks for the reply 😊 73 from Rotterdam 👍

[@chazwozza67]

@@M7XCB fooling the radio makes no odds the aerial is still bad

[@aarongriffin81]

Can you auto-tune the nearest frequency that you WANT to transmit on that has 3:1 SWR and then after tuning go to the frequency you desired and at least have decent SWR? Due to not being able to tune over 3:1 SWR you can at least tune to its limit nearest your desired frequency.

[@Bernard-John]

Hi after the antenna tuner modified, the radio 📻 does SWR from 5:1 good for portable work, 73s from Rotterdam

[@jest.s50si83]

I'm watching your clip and it's really interesting. I have the feeling that the tuner on my 7300 is not functional at all. It grinds, grinds, but it doesn't beat my swr even if it's below 2.5 or less. The station is new and I really don't know what to do. I would appreciate any information. 73 from S50SI

[@cacciskagrana6603]

hello, can you post a photo of the modification scheme? Thank you

[@Bernard-John]

Hi,I don't have a modification scheme,73s from Rotterdam.

[@radioguy19510]

That was a waste of time!

[@Bernard-John]

Sorry I will give you a refund

[@radioguy19510]

@@Bernard-John No need. I will just watch it again...