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Author Topic: Icom r75 - ic-718 Transceive  (Read 325 times)

LA9XNA

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  • Posts: 428
Re: Icom r75 - ic-718 Transceive
« Reply #15 on: August 05, 2022, 06:38:14 AM »

You could make your own CI-V interface with a FTDI board.
These boards you can get cheep form plases like Ebay, Amazon, Sparkfun and others.
If you buy a board be sure that its not a Prolific chip because these do always have problems with the drivers.
FDTI ar the best ones.
Check out the links.
https://owenduffy.net/blog/?p=6756
https://www.maniaradio.it/forum/showthread.php?tid=458

You dont need a lot of parts.
FDTI breakout board
Diode 1N4148 or similar
10k Resistor
Some wire.
1-4 mini jack plugs.
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N8YX

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Re: Icom r75 - ic-718 Transceive
« Reply #16 on: August 05, 2022, 08:22:34 AM »

...no, they are independent on receive...so if you tune a signal on the r75 you must set the freq on the 718 manually..
The receiver SHOULD track the transceiver if this is set up correctly. But the transceiver shouldn't track the receiver if it's tuned independently.

Quote
its a lot like using the spot feature on the fl101 and fr101 of yesteryear...
Must have read my comments elsewhere on the site about FRs.  ;)

I bought a pair years ago, sold them...got another analog pair individually, then a couple more FR-101Ds. A YO-101 and SP-101B/PB followed. Some day I'll add an FL-2100B to that lineup. All the receivers I have are fully optioned, and I have a couple spare IF Units with different (narrower) filters that can be swapped in as warranted.

An op from Italy published a mod that adds rejection tuning to the FT-101, and this is directly applicable to the FR-101. I have all the required mechanical parts to add a concentric pot to the "Att" switch and will convert each receiver in turn. The new pot will control the notch frequency. Why Yaesu didn't implement such a feature (as they did with the FT-301) is puzzling.
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K0XY

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Re: Icom r75 - ic-718 Transceive
« Reply #17 on: August 06, 2022, 03:20:51 AM »

over the years i had numerous fr/fl101's...loved 'em...but like a fool I sold them all and they all had that 'spot' feature...and they were great looking...

...on the 718/r75 split capability (20m has been horrible, or am I lazy) made my first split cw qso and Bam!...worked like a charm...you just have to remember to set the 718's frequency AFTER tuning in to the r75 's victim...oh boy !!!
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N8YX

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Re: Icom r75 - ic-718 Transceive
« Reply #18 on: August 07, 2022, 12:55:30 PM »

over the years i had numerous fr/fl101's...loved 'em...but like a fool I sold them all and they all had that 'spot' feature...and they were great looking...
Yaesu had two versions of the YC-601 external frequency readout: The one like that used in most FR-101Ds (green VFD tubes) and one incorporating red LEDs which was used in the later model -101Ds. The corresponding external unit was labeled YC-601B.

I managed to snag an FR-101 red LED readout unit from an EU eBay seller and one day I'll swap out one of the green units in a receiver for it. That'll match either style of external readout that I run with the FL-101. Some modifications required but the setup works nicely.
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K0XY

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Re: Icom r75 - ic-718 Transceive
« Reply #19 on: August 08, 2022, 08:54:55 PM »

...here is another thing I noticed by using the 718 as a transmitter...you can pair it (as separates )  with other digital readout receivers such as the FRG100 or FR101, etc,... I have an FRG 100 in route and they take plug-in filters...and now I am running out of desk space...still miss my 101's...I really had a case of the 'duh's' when I sold a bunch of them...
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