Adding A Second Receiver To The Icom IC-7100

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Here we take a look at how to add a second receiver to the ICOM IC-7100 Ham Radio Transceiver. The method in which I chose allows me to have a full bandscope on my computer, with it synced via Omnirig for CAT control.
The buffer board is available from SDR KITS:
www.sdr-kits.net/index.php?ro...
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Опубликовано:

16 апр 2024

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Комментарии : 42

@JJ-el8li Месяц назад

The 7100 is still a great radio for the money and is so versatile. I don't have any plans to sell mine and have owned it for 4 years.

@kv5r Месяц назад

Thank you for referencing my web article "7100 Panadapter how to connect an SDR to the IC-7100… © 2018-2024 by KV5R. I did not find it necessary to use a buffer, but indicated in the article that that was the "proper" way to do it. At the time of writing, a suitable buffer board didn't exist, but there were some cheap little MMIC amps that would need their 30dB gain greatly reducted with resistive dividers, and they would impart some distortion and spurs in the SDR signal. It's good to see SDR Kits is making a proper buffer board now. I still use my 7100 every day, with the same RF tap, with and SDRPlay, and have also used an Airspy and RTL-SDR v3 with acceptable results. As stated in the article, the loss to the 7100 receiver is about 1dB with a little series resistance; and this also makes the signal to the SDR a little lower, which it needs to be during transmit. I always love your videos! Kepp up the good work, bro! 73, --KV5R

@TechMindsOfficial Месяц назад

That's made my day that you are a viewer of my channel! Without your article I would of not made this video. Thank you!

@GoonyMclinux Месяц назад

I have no clue what you just said but it sounded cool. 🤣

@FightUni09 Месяц назад

I used the info on your great website to get my 7100 on digital. TNX

@jeremiahhill6431 Месяц назад

I just purchased the kit from SDR-KITS along with their bulkhead mount. I've been wanting to do something like this on my 7100 for a while and this will bring it up to par with the newer radios! Thanks for the video and instructions.

@TechMindsOfficial Месяц назад

You're welcome :-)

@Scotscan Месяц назад

Not that old, icom, thankfully, are still manufauring them. Absolutely superb 👌

@TechMindsOfficial Месяц назад

Yeh I think they stopped making them for a while and then they bought it back. Way ahead of it's time and it's a radio I over looked in the past. It's a fantastic radio for home and for mobile. Cheers!

@4X4-RADIO Месяц назад

Owned my 7100 for nearly 10 years, I would never let it go. At present it mostly does 40MHz/8M with my Experimental Licence.

@hotforrobot Месяц назад

Thanks for doing a video on the sdr kits buffer board. I am planning to use it on an ft-891 and was a little unsure about whether to use IF or RF input from the radio. This video cleared it up for me.

@robertl.tisdale5166 3 дня назад

Just got the board in the mail. Going to install on a TS440.

@merlinonline67 Месяц назад

You said it Matt! FT-8 is not a digital mode, it is a data mode. The difference is FT-8 and all other data modes is they are analogue and use tones, Digital Signals use a series of 000 and 111s such as Digital Voice.

@mahtin Месяц назад

I think the £12 cost vs the new or second-hand cost of an ICOM IC-7100 is basically zero! A great upgrade from the 5pF cap method!

@macdee8628 Месяц назад

An easy task if you have good eyes and competent skills and good soldering gear sdr kits are great ive had my ic775dsp done

@DXCommanderHQ Месяц назад

Top Banana Matt!

@TechMindsOfficial Месяц назад

Thanks Cal.. :-)

@FightUni09 Месяц назад

Keep my 7100 running VARAC all day long. Great radio

@David3o3 Месяц назад

I use these on some ft-450d's, works great!

@Northern-Rambler Месяц назад

Great video as always Matt, why did you choose the PATV board over the PAT150M which seems to be designed to fit the IC-7100?

@TechMindsOfficial Месяц назад

Hi ya, the PAT150M board is designed to be used with the IF output, and it has built in Low Pass Filters. With the RX Output that I tapped into I needed a buffer, but no LPF, hence the use of the PATV as it has no LPF. Hope that helps :-)

@winstonchurchill6506 Месяц назад

Well done

@reedreamer9518 День назад

I did the same mod about 8 years ago on my IC-7100, but I connected the PAT board to an IF tap (why did you go with the (4:26) RF tap?). I use my IC-7100 as a mobile rig, so when I want the panadapter I have to hook-up my SDR and laptop for the panadapter display. But I've been wondering if I could used something like a Malahit receiver as a panadapter instead, which self-contained, more compact and convenient. The only problem is (I assume) Malahit does not accept CAT commands, so OmniRig can not be used to sync the frequencies between rig and SDR. Let me know if you find some kind of SDR gadget that has a built-in display and can communicate with OmniRig, to be uses as a mobile panadapter.

@deltadiversbyward Месяц назад

You mentioned you used some 50ohm coax for the IF tap but could have used some plain wire. Why did you choose coax ? what would the benefit be?, What would the drawback to plain wire be ?

@wtmayhew Месяц назад

This approach might also work with well the Icom IC-706 Mk IIg, which is a rig I still use frequently. It is really a plus to have HF, 6m, VHF and UHF all in one pretty small box. I’ve got an IC-7300 for HF, but I still find the aging 706 is a fairly pleasant radio when it has the SSB and CW filters installed. The older Icoms are still too god to toss out. The downside of the 706 is the fairly high idle current of almost 2A at 13.6V when receiving, not the best for battery portable.

@Ei2iP Месяц назад

So to be clear connecting the module the way you recommend does not give you a second independent receiver, so in order to use the sdr receiver you need to be on the same band. Would I be correct in saying this?

@frankENZC Месяц назад

Excellent!

@TechMindsOfficial Месяц назад

Thank you! Cheers!

@Coowallsky Месяц назад

Kudos!

@Subgunman Месяц назад

I wonder if this would work with Yaesu radios with CAT control. FT857 original not D series.

@cleitorubiable Месяц назад

show Parabéns pelas tuas publicações muito legais 73´s py3sa

@Subgunman Месяц назад

Do you have a source for the coax used in this modification? What nomenclature does this coax carry?

@paulsengupta971 Месяц назад

Looks a bit like RG-316 to me.

@Subgunman Месяц назад

@@paulsengupta971 thanks! I will check it out if there is an EU supplier for this cable.

@Ei2iP Месяц назад

Is it for hf only, does it work with vhf and uhf

@TechMindsOfficial Месяц назад

All bands as shown in the video.

@Ei2iP Месяц назад

@@TechMindsOfficial great have the kit, I'll do the install

@CBPunisher1900 Месяц назад

wonder it that board would work on a cb/10m radio like a ranger 2950 or anytone 5555n2 or president george i bet it would work though u should do a video lol

@Mrgiz-2e0off Месяц назад

Mate on watching this video I have bought the board and fitted it to my 7100 and wow love the results, it has opened up the radio to a new level cheers and thank you for sharing and showing this to me .. de 2e0off Rob

@TechMindsOfficial Месяц назад

That's awesome! Glad to hear it helped out. :-) Thanks for watching..

@deltadiversbyward Месяц назад

What SDR receiver do you use ?

@TechMindsOfficial Месяц назад

I use an RSPdx from SDRPlay