IC-7300 with INRAD RX7300 RX Antenna Port Installation
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- čas přidán 27. 02. 2017
- Now available from
www.inrad.net/product.php?prod...
See possible connections starting at 7:53
DXE Front end Protection
www.dxengineering.com/parts/d...
Discontinued
Another version www.ebay.com/itm/283438834502 - Věda a technologie
Thank's Steve for the detailed explanation for the INRAD mod install, as well as for the paper ilustration explaining all the possibilities that arose with this simple and inexpensive "upgrade".
Best regards.
Glad you mentioned the FE protection. I have already fried the FE of an SDR by getting distracted and transmitting while I had an SDR attached to a receive antenna. Some of these SDR's do not have very much protection, so BEWARE!
Outstanding installation and explanation video, thanks Steve. I bought one and installed - anxious to play with it. Your applications options summary is excellent ... except I believe I caught an error. At 9:15 you're discussing the separate transceiver / receiver option and you mentioned to hook up the separate receiver to the port on the right as viewed from the rear. As I understand it, the port on the right (as viewed from the rear) is the receive INPUT (for an RX antenna) and the port on the left is the receive OUTPUT from the IC-7300 main antenna. Therefore, you want to hook the separate receiver to the port on the left (as viewed from the rear). At 11:00 you mention the RX only antenna (which is what I will do) and did not state which port but I believe it is the port on the right as viewed from the rear.
I hope I understand this correctly and will play with these options when I get my new magnetic loop RX only antenna. 73 KJ6ER, Silicon Valley
Very nice internal mod. Adds lots of possibilities to the rig.
Thanks for another excellent video.
73
wd4dda
Cool, the first thing i asked about the 7300 was if it it had RX antenna port. That gave me second thoughts, even knowing that it could be solved with a T/R switch. I missed the RX port of my old IC-751A and the RCA jumper. What I used to do with the jumper was removing it and connecting two RG-58 jumpers with RCAs on the radio ends and PL-259 on the other ends. I inserted a three antenna ports switch between the PL-259 connectors using the common for the RX IN and the #1 antenna position for going back into the radio on the RX OUT just like the jumper, having the TX antenna for RX as well. Then, on antenna port #2, I would put my main RX antenna and on #3 a second antenna for RX, it could be my 20 m beam, for example. Using this you can still insert a receiver protector, a filter or other devices. 73 de HK1A/EC5KXA/K1KK
The best contest station setup I ever "guest op'd" (some years ago) had a WONDERFUL array of Beverage rx antennas strung out down the mountain variously... Let's get digital! dadidah edited: Kit arrived today-nearly too easy.
Outstanding explanation, as others have said. Thanks fir making! - Cheers, mate! (Chris V • AC3Q)
That device looks quite easy to build. Actually simple. And I already have the parts. You could build it with a small connection for the antenna tuner and use a converter on the outside. Nothing lost. You don’t have to use full size RCA connections. Building it tomorrow. Will out sell this..
This is excellent, thank you!
Thanks Steve! Yes, heard a few mumbling out there because there was no RX ant.. well there you go!
Very Good Information! Thanks.
Great video. solves several problems and great schematics at the end of the video for most of the possibilities. w0wkc
I also use my IC-7300 for general coverage listening. In that regard I notice substantial differences in rf gain on various bands. I wish there was a front end alignment procedure like with analog radios but there is none. I'm thinking I could use this adapter and insert and external rf amplifier. Thanks for the video
Great video. Word of caution for diversity monitoring. Several SDR receivers delay audio along the chain, so it sounds like a echo. One of the rigs, in my case, required a audio delay line to sync up the audio with my SDR.
Nice video Steve. Thanks for putting this together. So, what's the best way to wire this so you can switch between the receive antenna and "normal"? Would a 2 position coax switch work, with one of the positions acting like the jumper? Or would this present a problem when the switch grounds out the unused position?
Easy enough, and now that that's installed, I'm curious as to your thoughts/preferences on RX antennas. I literally dropped wire onto the floor here and knocked out a enough noise to make 75 and 160 tolerable tonight. But really haven't put much study into rx-only antennae. yet. 73
thanks Steve
Thank you.
Interesting. Im thinking of using a beverage on 160 but want to use an external tuner. Good thought about moving the rca jack permanently on the back panel, I worry about drilling the holes in the back and missing an aluminum shaving,any thoughts? Just a good vacuum and double and triple check? Thanks Great video
Or you can do what I did to retain the internal antenna tuner connector for use with my MFJ 939 External Antenna tuner. That would be to buy an MFJ 1708 instead, which will provide the receive antenna for you and when you transmit on the IC 7300 it protects whatever SDR device you have on the receive antenna. I'm using a FIFI SDR at the moment on my 23 inch touch screen monitor and it's awesome!!
You change with this action the Adjusted input/output Impendance for the antenna. This SDR is fine Adjusted on them Impendance .
Steve: What about activating the rx 7300 on the menu settings and how do you do that.
Great Video thanks for posting.Btw did you change the fan on the 7300? looks like the nf8 Noctua?
Yes it's the Noctua and now I don't hear that awful startup surge.
Thank you, i guessed it was i use them in my other radios they are the best for low noise.I have ts870 ts950sdx both of them fitted with the Noctua fans.Nice modification for the icom 7300 i use a front end saver from dx engineering they work very well and keep the dreaded RF out of your expensive equipment.
Pulling on the coaxial is a big NoNo!
Pull on the connector tab. Please update this information soon
Be very careful with that ribbon cable. At 2:35. I learn the hard.
Steve, great video..Quick question for you: In the dual receive configuration, do you have any suggestions for what type of RCA "Y" adapter to use to split the signal between the 7300 and the Aux Receiver or would a standard male-male-female audio adapter work here? Thanks for the help and keep up the good work. Mike
Or should I be looking for an RF splitter/Combiner built for RF..thx Mike
Just a RCA Y will work with a few DB loss. I doubt if you would notice.
Roger that...Thanks
Thanks Steve. RX 7300 up and running in the shack. Using the dual receiver set up right now with SDR Console v3. It's nice having a full size panadapter and I can have the option to slave the SDR receiver to the Icom or operate the two receivers independent from one another. Thanks again for your help. Mike
cool!
Nice mod. Is there any noise or signal loss brining those lines out of the enclosure?
No
Nice video of a simple mod.
One of my ideas would be using a true signal splitter, e.g. a satellite signal splitter (yes, I know 75 ohm, but not critical for RX use) possibly with low gain preamp in front, in order to monitor several frequencies around the selected band
This in order to detect 10m propagation by listening with external receivers on 28200, the international beacon frequency, and 27.555 which is an excellent way to detect 10m propagation.
Does someone have experience with this mod for, e.g. a IC-7100 or IC703/706 ?
noctua fan nice ;)
What connector is used. pretty pricey and the postage is terrible. thanks
Steve, thank you for this and especially for the possible connections. In the dual-receiver connection (3rd from the top on the left side), if I were to use an SDRplay as the second receiver for an extra pan-adapter, for example, do you think I'd need a front-end protector for the SDRplay? I guess I'm curious if during TX the receive path to both receivers would be shunted to ground and hence not need a front-end protector on the SDRplay. Thanks!
It would appear that you would not need any extra protection since when you are transmitting from the same rig, the receiver antenna lead is disconnected and the electronics should shunt any RF to ground but then it wouldn't hurt to play it safe and put the DXE-RG-5000 in line with the SDRPlay.
Thank you for replying. I am trying to keep it simple - and less expensive - but a receiver guard is good insurance. Thanks!
Question does this allow the simultaneous RX and TX on different bands ? I think not... right ?
Nope
What is the name of the IC 7300 internal connectors?
Taiko Denki RF Connector
Maybe the ic 7300a will have this installed kg6mn
Still waiting for Anyone to release an SDR radio to follow the IC-7300. The delay is unbelievable. Even Icom hasn't released an IC-7300a, yet. It's like all the manufacturers are stunned. Even Icom stunned itself.
Unfortunately, this item has been discontinued by Inrad
Have you used this with hdsdr and a dongle? I hear people using it this way for a large pan adapter and hrd to operate the radio. Just researching before I go and dick up my new 7300
Very strange to use RCA jacks for an RF connection but I guess it is a space issue. And maybe a cost issue.
RCA jacks are common on most mid to high end radio’s as a dedicated receive only port, internal relays ground the system, though as this is a modification I’m not sure if that is the case in this instance, remember you wouldn’t be transmitting through this, my own RX only antennas are between 90 &120 metres on top band which seems to give good separation.
Pull on the connector not the wire.
Yes I noticed that and was going to make the same remark. Well spotted. ? How many times do you get pulling on the wire before it goes un-serviceable.
Unfortunately this item
is **DISCONTINUED** **NO LONGER AVAILABLE**
That's bad. I see a version on Ebay which has SMA outputs www.ebay.com/itm/283438834502
Can i transmit with it?
Negative
oh no!
Of course you can still transmit as always. I wasn't sure of your question.
sorry, what i mean is.. when it is installed and i connect another receiver on it as panadapter, will my sdr receiver be isolated/protected when i TX on 7300?
Well all I can say it yes since the sdr will be connected to the same spot that your 7300's receiver input was connected however the 7300's receiver has some diodes protecting its input and your sdr may or may not...who knows? So the safe thing is to put some protection in series with the sdr receiver. That's where this little device comes in handy although it might cost more than a cheap sdr rx. www.dxengineering.com/parts/dxe-rg-5000
Now if you intend to use the sdr receiver in stand alone mode while hooked to a rx antenna then by all means use the dxe device but when going through the 7300's front end, you probably won't need it. Probably maybe.