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Author Topic: Panadapter for Icom R-70  (Read 904 times)
KB0TXC
Member

Posts: 80




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« on: October 14, 2014, 08:12:00 AM »

Hi,

Does anyone know of a panadapter that could be used with an Icom R-70?

Thanks in advance!

Joe KB0TXC
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N9LCD
Member

Posts: 181




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« Reply #1 on: November 07, 2014, 04:09:05 PM »

Joe:

First, you'll have to tap the first / 70.450 MHz mixer & bring the output to the rear deck.

Second, you'll need a 70.450 MHz panadapter.  That is not a "standard" frequency.

Third, you'll have to be sure that the L.O. in the panadapter and "noise" from the panadapter doesn't bleed back into the R-70.

I don't know how much you'll be able to view.  Most of the HF panadapters have a narrow sweep, about5 50 KHz, or +- 25KHz.  Also your viewable bandwidth will be limited by the bandwidth of the signal through the first mixer.  So you may not see even 50 KHz.

N9LCD 
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K5TED
Member

Posts: 780




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« Reply #2 on: November 07, 2014, 04:37:06 PM »

looks like it can be done with a rtl dongle. http://www.youtube.com/watch?v=yxJthBDQXTM

R70 uses same IF scheme as the R71. The rear Scope terminal has the 70.4515Mhz IF. Plug RTL antenna port into the Scope output, tune RTL to 70.4515MHz, enjoy. No mods needed. Just a $25 dongle, SDR# and your pc.
« Last Edit: November 07, 2014, 05:33:40 PM by K5TED » Logged
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