---
product_id: 20049177
title: "InfOspot AM Radio Transmitter v TH4.75 (Talking House)"
brand: "talking house"
price: "R$87"
currency: BRL
in_stock: false
reviews_count: 8
url: https://www.desertcart.com.br/products/20049177-infospot-am-radio-transmitter-v-th4-75-talking-house
store_origin: BR
region: Brazil
---

# Up to 1/2 mile range 100 milliwatt FCC-certified power Internal & external mic inputs InfOspot AM Radio Transmitter v TH4.75 (Talking House)

**Brand:** talking house
**Price:** R$87
**Availability:** ❌ Out of Stock

## Summary

> 📻 Own Your Airwaves — Broadcast Boldly, Connect Locally!

## Quick Answers

- **What is this?** InfOspot AM Radio Transmitter v TH4.75 (Talking House) by talking house
- **How much does it cost?** R$87 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/20049177-infospot-am-radio-transmitter-v-th4-75-talking-house)

## Best For

- talking house enthusiasts

## Why This Product

- Trusted talking house brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Broadcast Beyond Boundaries:** Reach cars in parking lots, event venues, and neighborhoods with up to half-mile range using the optional outdoor antenna.
- • **Noise-Free Sound Experience:** Includes Line Conditioner kit to minimize 60Hz hum and ground loop noise for crystal-clear AM broadcasts.
- • **Plug-and-Play Professionalism:** FCC Part 15 certified for license-free operation, ensuring hassle-free, legal local broadcasting.
- • **Versatile Audio Input Options:** Supports line-in, internal mic, and external mic jack for live or recorded content with included hand-held mic.
- • **Customizable Frequency Control:** Easily tune any AM frequency from 520-1700 kHz with front panel controls to avoid interference and maximize reach.

## Overview

The InfOspot AM Radio Transmitter v TH4.75 is a US-made, FCC Part 15 certified, license-free AM transmitter delivering up to 100 milliwatts of power. It offers flexible frequency tuning (520-1700 kHz), multiple audio input options including internal and external microphones, and a range of up to half a mile with an optional outdoor antenna. Ideal for local broadcasting at events, businesses, and community projects, it includes a Line Conditioner kit to reduce noise and ensures secure operation with a tamper-proof key.

## Description

InfOspot ̶ originally marketed as the Talking House AM radio transmitter system ̶ is the first professional, license-free radio station available for government, nonprofit and individual applications. It is the most affordable solution for local area broadcasting, offering the widest latitude in frequency flexibility, audio quality, broadcast content and programming convenience. Designed to operate under FCC Part 15 Rules, InfOspot is capable of up to 100 milliwatts of power, yielding a range of up to 1/2 mile when mounted 20 feet above ground. The InfOspot System offers unprecedented flexibility and affordability when compared to higher powered, licensed systems: (1) No FCC license is required. It is certified under FCC Rules Part 15.219. (2) Any program content may be broadcast, including information, music or commercials. (FCC rules do not allow the broadcast of objectionable content or the use of a frequency that causes interference to other radio stations.) (3) Any AM frequency 540-1700 kHz may be utilized. The frequency is easily changed using front panel controls. (4) InfOspot Systems utilize the most trusted, time tested Part 15 Transmitter to generate the broadcast signal. (5) The system’s Range Extender Outdoor Antenna and Tuner (ASIN B07TLNS2DF) may be mounted at any height above the ground, due to the exclusive coaxial Transmitter-to-Antenna linkage. (6) Security key prevents unauthorized transmitter control tampering.

Review: Excellent AM transmitter - This unit performs as advertised, then some. Using the relatively short antenna wire that is packed with the unit, it puts out a usable signal 1/4 mile from my house. I found this astounding, given the output power of the unit is something like 100 milliwatts. There is a local radio station with an antenna farm close to my location at the low end of the AM broadcast band. I set the unit to broadcast at 1660 kHz at the other end of the band, which works extremely well in my location. I use the unit to broadcast recordings of old time music, big bands, etc., to my collection of old AM transistor radios. For this purpose, it it working wonderfully. When I first fired up the unit, there was a pretty loud hum in the signal. Another buyer posted a review recommending winding the power cord into 8 tightly wound 2" coils, close to the plug. I tried this, and it helped reduce the hum somewhat. I have ordered an assortment of ferrite chokes, and when they arrive, I'll snap them along the cord to see if I can eliminate the hum altogether. I found it odd that there is no power switch for the unit. When you plug the unit in, it's on. To turn it off, you have to pull the plug from the wall, or from the connection on the back of the unit. When I'm finished with my broadcasting session, I pull the power cord connector from the back of the unit to turn off the power. Seems to work ok, but a bit odd there is no on/off switch on the front panel When setting the unit up, I found it necessary to turn up the gain of the input signal to a decent level. It's easy to find the right input signal level - just listen to your AM radio. When the sound becomes distorted, your input level is too high - just back off a little until the sound is satisfactory. Highly recommend. Easy to hook up, easy to use. Longevity? Who knows.
Review: works fine - This is a nice AM transmitter that you can pick the frequency with and easily record a recorded message that plays over that radio frequency. It did have a bit of a buzz, but I followed the directions and it was lessened when I made the changes. Fairly easy to use. I tried using an external mic, and that did not work at all. But, the internal mic works fine. Its not as good as an FM transmitter, but works fine at about 200 ft or so. If you get closer, it sounds a bit better. Of course, it is AM, so the sound quality is just OK. I am using it for both live broadcasts and recorded and both work fine. I did try to call customer service about the mic, but no answer.

## Features

- Reach cars in church and school parking lots, virus testing/vaccine sites, movie nights, historic spots and businesses; great for hobby and neighborhood broadcasting & Christmas light shows.
- Version TH4.75; manufactured in the USA – FCC Certified for Unlicensed Operation under Part 15 rules. Certification number provided.
- 520-1700 kHz. Range up to 250' with included indoor antenna; up to 1/2 mile with optional Range Extender Outdoor Antenna and Tuner (RE.2.5) ASIN B07TLNS2DF.
- Requires an external audio source. Features a line-In port for direct audio input, internal microphone and an external mic jack for live broadcasts. Hand-held microphone included.
- Now includes Line Conditioner kit to minimize 60 cycle and ground loop noise from outside sources.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #346 in MP3 Player FM Transmitters |
| Customer Reviews | 4.2 out of 5 stars 156 Reviews |

## Images

![InfOspot AM Radio Transmitter v TH4.75 (Talking House) - Image 1](https://m.media-amazon.com/images/I/51nEdhi16XL.jpg)
![InfOspot AM Radio Transmitter v TH4.75 (Talking House) - Image 2](https://m.media-amazon.com/images/I/61HiPhq4qKL.jpg)

## Questions & Answers

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent AM transmitter
*by V***R on March 24, 2022*

This unit performs as advertised, then some. Using the relatively short antenna wire that is packed with the unit, it puts out a usable signal 1/4 mile from my house. I found this astounding, given the output power of the unit is something like 100 milliwatts. There is a local radio station with an antenna farm close to my location at the low end of the AM broadcast band. I set the unit to broadcast at 1660 kHz at the other end of the band, which works extremely well in my location. I use the unit to broadcast recordings of old time music, big bands, etc., to my collection of old AM transistor radios. For this purpose, it it working wonderfully. When I first fired up the unit, there was a pretty loud hum in the signal. Another buyer posted a review recommending winding the power cord into 8 tightly wound 2" coils, close to the plug. I tried this, and it helped reduce the hum somewhat. I have ordered an assortment of ferrite chokes, and when they arrive, I'll snap them along the cord to see if I can eliminate the hum altogether. I found it odd that there is no power switch for the unit. When you plug the unit in, it's on. To turn it off, you have to pull the plug from the wall, or from the connection on the back of the unit. When I'm finished with my broadcasting session, I pull the power cord connector from the back of the unit to turn off the power. Seems to work ok, but a bit odd there is no on/off switch on the front panel When setting the unit up, I found it necessary to turn up the gain of the input signal to a decent level. It's easy to find the right input signal level - just listen to your AM radio. When the sound becomes distorted, your input level is too high - just back off a little until the sound is satisfactory. Highly recommend. Easy to hook up, easy to use. Longevity? Who knows.

### ⭐⭐⭐⭐ works fine
*by J***8 on June 25, 2020*

This is a nice AM transmitter that you can pick the frequency with and easily record a recorded message that plays over that radio frequency. It did have a bit of a buzz, but I followed the directions and it was lessened when I made the changes. Fairly easy to use. I tried using an external mic, and that did not work at all. But, the internal mic works fine. Its not as good as an FM transmitter, but works fine at about 200 ft or so. If you get closer, it sounds a bit better. Of course, it is AM, so the sound quality is just OK. I am using it for both live broadcasts and recorded and both work fine. I did try to call customer service about the mic, but no answer.

### ⭐⭐⭐⭐⭐ A MUST have for antique radio hobbyists
*by J***. on April 3, 2019*

I have a new hobby of restoring AM radios from the 1920s and 1930s. I enjoy listening to oldies and country, but not talk radio or the salsa music that now dominates this band. I was able to pick up several fairly weak stations that play the music I enjoy, but then either one of my neighbors installed a device in their home like a new TV, or the city replaced a power line transformer about two weeks ago. The RF interference is now horrendous. I was bummed. There is no way I can enjoy my radios with all that static. Enter the Talking House AM transmitter. Easy to set up, great range and signal quality. I tuned it to an open AM frequency (1700 KHZ), plugged it into my Iphone (line input) and now can listen to my music library and stream whatever content I want from the internet, static free. There was a bit of a hum in the signal initially, but they supply a non-grounded AC adapter for the Talking House transmitter which totally eliminated that. I am so pleased, particularly for the $95 I spent. Highly recommend this device for others who have similar needs. I have not tried to record anything or used the microphone feature so I really can't comment on that. UPDATE: Within about a month the Talking House started having calibration problems. It would try to calibrate and show "Err" on the display. The good news is that I got my money back so I will retain the original 5-star rating. Maybe this is a fluke and the unit is reliable overall.

## Frequently Bought Together

- InfOspot AM Radio Transmitter v TH4.75 (Talking House)
- Bose QuietComfort Ultra Bluetooth Headphones, Wireless Headphones with Spatial Audio, Over Ear Noise Cancelling Headphones with Mic, Up to 24 Hours of Battery Life, Lunar Blue - Limited Edition Color
- Monoprice Audio/Stereo Cable - Single 3.5mm TRS Plug to Dual RCA Plug, Mp3 Player/Phone Headphone Output to Home Audio System, 6 Feet, Black

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-03-05*