IC-7100 from A to Z #11 Connecting an external antenna tuner @HamRadioA2Z
IC-7100 from A to Z #11 Connecting an external antenna tuner  @HamRadioA2Z
Uploaded October 2020 | Updated September 2026, 2 weeks ago
NOTICE: In July 2021 the channel name changed from HamCuredSmoke
To Ham Radio A2Z. All of the earlier videos (like this one) are still available.


This time we will look at connecting an external antenna tuner to the 7100. In the video I use an MFJ-939I, but a number of other "made for Icom" tuners will connect and operate in a very similar manner.

You can check out the companion website for the channel at:
https://a-2-z.tech/

Manual pages that were covered/referenced in the Advanced Instructions:
17-20 Tuner Set Functions
Section 16 - Antenna Tuner Operation

Here are links to a couple tuners from the manufacturer's websites:
MFJ 939 tuner on MFJ Site: mfjenterprises.com/collections/tuners/products/mfj-939i?_pos=1&_sid=28d04d999&_ss=r
LDG IT-100 tuner on LDG Site: ldgelectronics.com/index.php/products/desktop/it-100

Below are links to purchase items discussed in the video. Note, these are Amazon Affiliate links. I will make a small commission if you purchase through the link:

Note as of the video recording date (Oct 2020) Amazon doesn't have a listing for the MFJ 939-I
Icom AH-4: amzn.to/3jqL62n
LDG IT-100: amzn.to/37Hbp2e
PL-259 Jumper Cable: amzn.to/35yTgB6
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IC-7100 from A to Z #11 Connecting an external antenna tuner

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