Welcome, Guest!Login
Buy
0 Items
$0.00
Art    Books    Camera & Video    Crafts    Dolls & Bears    Electronics    Food & Nutrition    Jewelry    Movies & TV    Office & Industrial    Sports Memorabilia    

Belar AM RF Distribution amplifier RFA-2 modulation monitor Rackmount Rack Mount
1
In Stock Brand:  BelarCondition:  Non-functional
$195.00
No Product Reviews yet

Login to enter your own
review of this item.

Payments:
Ships to:   USA 50 States
Get it by:   Thu, Mar 18th
I'm Offline. Message Me!
Please email to Confirm Availability before Purchase.
Thank you.
Location:
Member Since:
USA
Nov 2013
61.0
This neat little circle is our "Triple Rep Display". Each 1/3 section represents a separate performance metric, with solid green indicating a perfect score. Red sub-sections indicate possible performance issues, while gray indicates no data for that performance area.

Center total is the Seller's overall score, averaged from each component:

Bizsurplus
Atomic Mall Feedback:
Imported Feedback:
Order Fulfillment Rate:
83.0
0.0
100
Trophies Earned
Items:  2,022
Ground: $2.00
Ships To:  USA 50 States
Description
- AW2KLOT#:15877
Belar AM RF Distribution amplifier RFA-2 modulation monitor Rackmount Rack Mount We gladly ship to most countries! Email us for a Quote

Belar AM RF Distribution amplifier RFA-2 modulation monitor Rackmount Rack Mount

untested unknown condition

1240 khz am tuned

The Belar RFA-2 AM RF Amplifier is a selective, high gain, all solid state AM RF Amplifier/Down Converter with automatic gain control (AGC). As a companion to a Belar AM Modulation monitor, the RFA-2 makes it possible to monitor off-the-air AM signals accurately and conveniently without the problems associated with changes in transmitter power level, antenna patterns, and signal fading. The RFA-2 allows monitoring of both carrier frequency deviation and modulation characteristics from a point remote from the transmitters in the 530-1710 kHz band. Note that the RFA-2 has an IF output and is suitable only for use with a Belar AM Modulation Monitor, such as the AMM-2B, AMM-3, or AMMA-2.

The RFA-2 uses both crystal controlled superheterodyne and heterodyne repeater principles to provide a virtually distortionless, spurious free output for modulation monitoring and a frequency restored output for frequency monitoring.

The intermediate frequency (IF) of the RFA-2 is 260 kHz whereby a precision 30 kHz wide band-pass filter is used to remove the unwanted adjacent channels and still retain the full frequency response and linearity for accurate monitoring of 10 kHz modulating frequencies. The IF is amplified by a linear, feedback amplifier whose output then drives the modulation measuring portion of the AM monitor. There is a 6 dB margin in the output capability to permit the high positive peaks of supermodulated carriers to be accurately monitored.

A portion of the 260 kHz is fed to a limiter to remove modulation and is mixed with the local oscillator frequency to restore the original station frequency. The output is filtered to remove unwanted signals and is amplified to provide a frequency measuring output

The outstanding feature of the RFA-2 is the AGC range-the total range is more than 30 dB. Sufficient feedback is employed to hold the output level constant to better than 2% for an input level change of 12 dB. This eliminates the problems encountered by station's having to change power levels or antenna patterns. The AGC also holds the level constant in remote locations where signal fading is a problem.
SPECIFICATIONS

RF Sensitivity 100 uv. across 50 ohms

Antenna RequiredWhip or Loop

Bandwidth 0.2 dB kHz

-3 dB kHz

Greater than -40 dB kHz

I.F260 kHz

IMAGE REJ Greater than 50 dB

IF REJ Greater than 50 dB

RF OUTPUTS260 kHz for MODULATION measurements, 5 volts RMS min. STATION FREQ for FREQ measurements

AGC Range Less than 2% change in carrier level

for 12 dB change in input level

Size3.5"H x 19"W x 11.5"D

Net Weight 8 lbs.

Don't forget to place your bid.



By bidding on this auction you agree to the following terms:

Shipping Terms:
  • Buyer pays all shipping costs.
  • Let us know if there is an issue with the shipping costs, as they are automatically calculated by Atomic Mall.
  • Shipments made to California must include 8.00% sales tax unless we are provided with a valid resale certificate.

Payment Terms:
  • Payment is to be made by PayPal
  • Please contact us if you have any questions
  • Payment is to be received within ten days of close of auction.
  • Should payment not be received within ten days the item will be re-listed and high bidder will forfeit.
  • No personal checks will be accepted.

International Terms: (These terms only apply to international shipments.)
  • Buyer is responsible for all brokerage, customs, and or duty charges.
  • Not all items are available for international shipment due to import/export regulations. In the event that we are unable to ship to buyers country, buyer will receive a full refund.
  • Payment must be made in US Dollars.
  • Money must be drawn against a US bank.

Warranty Terms:
  • The 14-day return period begins the day of receipt.
  • What you see in the picture(s) is what you get nothing more nothing less.
  • Test results of item(s) in auction are described to the best of our ability in the ad. The results of all tests that are performed are disclosed in the ad.
  • The maximum liability of Betterstudiogear is the high bid of the auction.

Return Terms:
  • Returns are allowed within 14 days
  • we employ security features on our items and record all serial numbers to ensure we receive the same item back.

Medical Terms:
The following terms apply to any and all medical items or any item offered for sale in any medical category or any item that Atomic Mall deems these terms are applicable to:
  • The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies. If so, you may not on this item unless you are an authorized purchaser. If the item is subject to FDA regulation, I will verify your status as an authorized purchaser of this item before shipping of the item.
  • The buyer will not hold the seller, Atomic Mall or the item's manufacturer responsible for the appropriate or inappropriate use of this device either by the user or a third party. Once purchased, it is the sole responsibility of the purchaser to assume any and all liability from the use of this device.
  • Please note before bidding that any medical equipment purchased should be completely tested by a qualified biomedical technician prior to being put into service
  • Dan Rydell in San Diego, CA, USA
  • Phone: 619-519-0869
  • Online Business name: Betterstudiogear

If any provision of this Auction Contract is held unenforceable, All remaining provisions of this Contract shall remain in full force and effect.

Copyright 2014 Betterstudiogear - All Rights Reserved.


Auction Wizard 2000 - The Complete Auction Management Software Solution
 

$195.00  
Listing ID:  2789081
Page Views:  703

More Items
from Bizsurplus


This site uses cookies to enhance the user experience. By continuing, you agree to their use.    More Info