C90 Precision TUNED 900 MHz Stubby Antenna for Motorola XPR7580 XPR7580e

Description

10.2.2020 update
****SEE Pandemic Shipping / Delivery Information Below****
C90
900 MHz
Tuned Short Stubby
MotoTrBO
Portable Radio Antenna
This listing is for one known-brand MotoTrBO antenna that was purchased new and then custom fine-tuned by us to obtain an outstanding high level of performance using lab grade equipment in the 900 MHz band from 896 to 941 MHz.
The portable radio shown in the photos is for reference only and is not included.
Our C90 antenna fits the
900 MHz
DMR portable radios that have a bottom O-ring weather seal and a special 1/4-36 threaded antenna stud to properly fit the portable antenna jack.  The grooves for the optional color ID bands are directly under the top cap and ready for use if needed.
This antenna is compatible with the following Motorola
900 MHz
radio models;
XPR7580,  XPR7580e
FACT:
A
B
I
GG
E
R
antenna is usually not better,
Just really
BIG
to poke you
!
IMPORTANT:
Please do not make any purchase until you know for sure what frequencies are being used in your portable radio.
The custom retuning of the
C90 antenna achieves a minimum signal gain of +3 dB that will effectively double your transmit and receive signal power due to the very low VSWR and excellent 50 ohm impedance match as compared to any standard mass produced untuned antenna.
Our retuning also allows for a much smaller antenna height without any loss of performance by eliminating all of the unused space inside the antenna covering.
This custom tuned antenna will be approximately 2.25 inches tall +-0.125 of an inch as measured from the bottom of the PVC radome to the top cap of the antenna. The final VSWR of 1.5:1 or less will occur across your frequency range choice for a true balanced high performance FM narrowband analog or digital communications range.
The bottom of the antenna mounting stud is marked with a single
blue
color stripe.
Our antenna meets all of the following criteria;
·
Must be a new known-brand antenna and not a cheap junk or aftermarket Look-a-Like copy from China.
·
Be as short as physically possible for a low profile with great communications range.
·
Must be professional looking on the portable radio
·
Exhibit an excellent resonance with a very low VSWR of 1.5:1 or less over the whole frequency range.
·
Use a special 1/4-36 threaded stud to properly fit DMR portable radios listed above.
·
Must maintain all specifications over the temperature range of -10 to +120 degrees Fahrenheit.
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It is a fact that the most important part of any radio communications is the antenna system.
The antenna is the device on a radio that converts RF power into radio waves during transmit and radio waves into RF power on receive.
All transmitted and received signals must pass through the antenna system for any radio to work.
A respected radio engineer once said, “If you had 100 dollars, invest 99 dollars in the antenna system and 1 dollar in the radio and you will always have great communications”.
After many years of our own experience we have found that this statement to be true especially for today’s FM narrowband radio communications. We have witnessed portable radios worth thousands of dollars using cheap OEM antennas get beat out performance wise by users with radios one forth the cost using our fine-tuned antennas.
VSWR is the efficiency measurement ratio of RF power that is being converted into radio waves by the antenna system as compared to the RF power that is not converted and reflected back into the radio as wasted energy.
A VSWR of 1.5:1 has been and is still the customary maximum upper limit used in professional land mobile radio communications to determine a good efficient transfer of RF power.
Any VSWR above 1.6:1 is poor and any VSWR above 2:1 is definitely BAD for the performance and the long term health of the radio RF power output amplifier.
Sadly many companies that manufacture products in China now use a VSWR of 2:1 as their good reference point to market their poor quality products and make them appear to be way better than what they actually are.
We do not recommend using a standard remote speaker mic (RSM) along with our custom tuned stubby antenna since the speaker mic coiled cord will physically block most of the stubby antenna performance.
Portable radio antennas need plenty of clear space in all horizontal directions to work best.
However, if you absolutely must use a RSM with your radio you must tie wrap the RSM coiled cord to go in an immediate downward direction close to where it exits the radio accessory connector to avoid blocking the stubby antenna signal.
Please see our other antenna listings for our high performance whip antennas.
FYI
, a tuned 900 MHz antenna is
NOT
made to operate in the Vhf, UHF, 700, or 800 MHz bands and will definitely not work properly if at all.
So do not purchase a
900 MHz
antenna and then complain that it does not work with poor range in the other radios bands.
Ask us for help before purchasing if you are not 100% confident.
We have built tens of thousands custom tuned antennas for our customers with excellent results and zero defects.
Our company has over 30 years of experience in creating high performance and cost effective antenna solutions.
TERMS and CONDITIONS:
We will not be held liable for performance problems or damage caused by any antenna being used outside of the tuned frequency range or due to the wrong antenna frequency range chosen by the buyer.
Our portable antennas are tested and tuned with a special micro-sized RF bridge located at the antenna connection inside the portable radio chassis.
The metal chassis of the portable radio is required for the antenna ground reference/ground plane also known as the other half of the portable radio antenna system.
If our portable antenna is tested with random external RF cables, RF adapters, external meters, and without the portable radio chassis, your readings will be completely incorrect and show resonance somewhere other than where it was actually tuned for.
For VSWR accuracy the antenna needs to be tested/tuned in the same location as where it will normally operate.
It is the buyer’s responsibility to verify what specific frequencies or frequency range is needed.
A 900 MHz antenna is not made to work in the Vhf, UHF, 700, or 800 MHz bands.
FYI:
Just because the antenna purchased fits on the portable radio and looks great does not guarantee communications performance.
You must verify the tuned frequency range of the antenna purchased matches the actual frequency range used in your portable radio.
We are only authorized to sell and ship known-Brand items to the USA, no exceptions.
Items will be shipped to the confirmed USA PayPal address only.
Any buyer abuse, fraud, tampering, or illegal activity will not be tolerated and eBay will be notified of the situation.
The TERMS and CONDITIONS as listed will not be modified in any way after the item is purchased.
Please be aware if these terms and conditions are not met, eBay will be notified of Non-Performing Bidder, appropriate bidder feedback will be given, and the item will then be relisted for sale again.
All photos, images, and text used in the auction are all the IP (intellectual property) of rcbi.
SHIPPING:
**** Pandemic SHIPPING DELIVERY NOTICE****
Please note that ALL USPS mailings can possibly be delayed due to the Pandemic. USPS mail delivery is most definitely not the same as it was before the pandemic started.
Per USPS their staffing is greatly reduced in many areas across the country due to the pandemic which is causing some long unpredictable delays. Most packages have arrived in a timely manner to our customers; HOWEVER, some 1st class packages can take 2-3 weeks to be delivered.
Priority mail does tend to get to you faster; HOWEVER, it too can take an extra few days to receive your package than is expected.
If your package is not delivered in a timely manner per USPS we have to wait until after the expected delivery date of your package to 1st complete an online Help Request form before we can start a Missing Mail Search Request. If after 7 business days from when we submit the Help Request Form your package still has not arrived, we can then submit the Missing Mail Search Request.
You need to be patient with your package delivery time frame.
We have done our job when we ship out your order now it is up to USPS to do their job in a timely manner to deliver your package.
With USPS First Class mail, be aware that shipping times can vary greatly with this economy shipping service on a good day and especially during national emergencies, severe weather or Holiday periods. If you need a faster delivery date please choose USPS Priority or USPS Express mail. We have 3 shipping options listed on all of our eBay listings; however, for some reason eBay does not always display the options. We were told it is a glitch in eBay’s system. They are working on it.
With USPS Priority mail and USPS Express mail, your order will ship out the same day only if your order is received prior to 2:00 PM Central time zone. Purchases that require customization or special tuning may require up to 24 hours of additional time to prepare prior to the expedited shipping.
We offer combined shipment discounts to save you money for all purchase made at the same time.
Purchase as many items as you want at the same time and we will combine them in one cost effective shipment for you.
Don’t worry if an immediate PayPal payment is required; we will issue you a refund via PayPal for any excess shipping costs you may have incurred after we combine all of your items into one shipment.
Shipping insurance and tracking is always included in the shipping cost.
No local pickup is offered.
RETURN POLICY:
Within 60 days of the auction close if; you are not satisfied with the item, you changed your mind, have buyer’s remorse, or made a mistake, you may return the item in the same condition as when it was purchased for a refund.
A restocking fee of 20% will be applied for all refunds.
We will refund the full item price paid less the original shipping costs, and the restocking fee. Any missing items will be deducted from the refund at the current manufacture suggested retail prices.
Within 90 days of the auction close if you feel that your item is defective, you may return the item under our warranty conditions as listed.
Buyer is responsible for the total cost to ship the item back to rcbi with shipment tracking. All returned auction items must include all of the accessories, must be in all of the original packaging, and in the same condition as when it was sold. If you are returning your item because we made a mistake on your order, we will refund your return shipping costs.
Any returned items that are used, warranty seals opened, or in an unsellable condition will not be accepted for a refund or replacement.
WARRANTY:
90 day limited warranty by rcbi against any defects in materials or workmanship.
Buyer is responsible for all return shipping costs to us.
We will refund the buyer for reasonable return shipment costs if the item is confirmed to be defective.
Warranty does not cover item damage caused by accident, other defective components, abuse, add-on accessories, neglect, modifications, alteration, misuse, performance problems caused by any antenna being used outside of their tuned frequency range or due to the wrong antenna frequency range chosen by buyers, repair, improper adjustments, tampering, shipping back to rcbi, or acts of god. Also any malfunctions or damage caused by failing to follow directions will not be covered.
Warranty is for the original purchaser only and cannot be reassigned.
The warranty date starts on the auction close date and any repaired or replacement items issued under warranty will be covered only for the original warranty period.
The returned item will be inspected and retested for all specifications.
If the item is found to be defective in materials and/or workmanship, we will repair or replace the item at our discretion. The item will be returned to you at no cost.
Any returned item found not to be defective and in good condition, will be shipped back to the buyer after we receive a payment from the buyer for all return shipment costs. Our return shipping will include shipping insurance and tracking.
Any abuse, fraud, or tampering will not be tolerated and void the warranty period. eBay will be notified of the situation.
Please check out our other eBay Listings
and our eBay Store
for more Great Deals !