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Q: Would this transmitter be appropriate for broadcasting my smartphone music to my antique am band radios?

Yes. Many of the buyers of the Infospot Talking House Transmitter use the transmitter for just that purpose.

Q: Which revision is this unit? TH4.6 or newer?

It's the newest version, Joe. TH5.0. It's the best designed license-free unit ever designed, in my experience.

Q: How important is it to use the 3m included antenna. I already have an old antenna in my house. Is there any "matching" issues w the transmitter?

If your old antenna is anything other than a 3m length of wire, the transmitter will not likely be able to calibrate (match) to it. If you're looking to use something other than a wire antenna, we offer the Range Extender RE2.5 Outdoor Antenna and Tuner on Amazon. ASIN B07TLNS2DF.

Q: On this AM transmitter, what is a good antenna to use for the outside antenna coax connector that is on the back of the unit. What would i use.

A Remote Antenna and Tuner, specifically designed for this transmitter and the iAM Radio Transmitter - which has higher quality audio, also on Amazon - will be available this spring. You will hook it up using RG6 coax cable to the external coax port on the unit. Call 616-772-2300 ext 102 and we will put you on the list to get notification. The Remote Antenna and Tuner (v 1.0) will also be sold on Amazon eventually.

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📻 Own your local airwaves—broadcast boldly, connect deeply!

CRYSTAL CLEAR AUDIO - Includes line conditioner kit to eliminate noise and deliver pristine sound quality.
VERSATILE INPUT SETUP - Supports internal mic, external mic jack, and direct line-in for live or pre-recorded content.
EXTENDED REACH OPTIONS - Boost your signal up to 1/2 mile with the optional outdoor antenna and tuner.
FLEXIBLE FREQUENCY CONTROL - Easily tune across 520-1700 kHz to find your perfect broadcast spot.
BROADCAST ANYWHERE LICENSE FREE - Operate legally under FCC Part 15 with zero hassle and no license fees.

The InfOspot AM Radio Transmitter v TH4.75 is a professional-grade, FCC Part 15 certified AM transmitter made in the USA, designed for unlicensed local broadcasting. It offers flexible frequency tuning from 520 to 1700 kHz, a range of up to 250 feet indoors or half a mile outdoors with an optional antenna, and multiple audio input options including a hand-held microphone. Ideal for community events, businesses, and hobbyists seeking affordable, high-quality AM transmission without regulatory complexity.

Have a Question? See What Others Asked

Would this transmitter be appropriate for broadcasting my smartphone music to my antique am band radios?

Which revision is this unit? TH4.6 or newer?

How important is it to use the 3m included antenna. I already have an old antenna in my house. Is there any "matching" issues w the transmitter?

On this AM transmitter, what is a good antenna to use for the outside antenna coax connector that is on the back of the unit. What would i use.

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Received my product in pristine condition. Great service overall.

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Great price for an authentic product. Fast international shipping too!

3 weeks ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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InfOspot AM Radio Transmitter v TH4.75 (Talking House)

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