Letter from Sheriffs Department71 SHERIFFS DEPARTMENT
6 Courthouse (z
Minneapolis, Minnesota 55415 hN
HENNEPIN
Dear Bill:
Don Omodt, Sheriff
Mr. William Craig
City Manager
City of Hopkins
1010 First Street South
Hopkins, MN 55343
October 11, 1983
RE: Frequency exchange between
Hopkins and Hennepin County
This is in follow -up to our discussion on Tuesday, September 27, 1983,
and per your request that this matter be reduced to writing. I understand
that you will discuss the matter further with Police Chief Earl Johnson,
Fire Chief Ray Peterson, and with your city council.
Our request, while somewhat complex in implementation, is rather simple
and straight forward in description. We wish to trade Hennepin County's
licensed frequency of 154.800 MHz for Hopkins licensed frequency of 155.850
MHz. Both frequencies are within the public safety band of operation.
Hopkins' frequency is currently used to transmit and receive on portable,
mobile, and base radio stations within the police department.
The County frequency is currently used to transmit from repeators
and to be received by mobiles and portables in police service. The County
is having police -radio user problems in the North half of the County because
frequency 154.800 MHz is not sufficiently separated from its paired frequency
of 154.755 MHz, which is the frequency received by the repeator from the
police mobiles and portables. The frequency swap with Hopkins would create
an ideal separation for the frequency pairs and in addition would increase
the separation between the Hopkins' pairs as well. As you know, your repeator
receives portable transmissions on 156.210 MHz. I know from my personal
experience that Hopkins has experienced some desensing, or blocking, on the
portable channel in the past. Utilization of 154.800 MHz will create a
wider separation in your pairs and should remove any desensing problems you
now have.
HENNEPIN COUNTY
an equal opportunity employer
Mr. William Craig
-2- October 11, 1983
As incentives for your agreement in this exchange, the County agrees
to the following conditions:
1. Hopkins shall receive the first new mobile radio installations;
2. Hopkins shall receive the first new portable radios if any are
desired, when such portables have been received by the County;
3. Hennepin County will not renew its license on 154.800 at such
time as that license shall expire. (Hopkins will therefore
be licensed on that frequency alone in this area);
4. Hopkins shall be authorized to have the Hennepin County truck
to -truck fire frequency available for installation in their
fire trucks. We are currently searching for a new truck -to
truck frequency for Hennepin County fire departments to use;
5. There shall be a minimum disruption of service during the
frequency exchange installation;
6. All installations of frequencies in Hopkins police mobiles, port-
ables, base stations, and fire trucks shall be at the County's
expense;
7. All costs associated with the installation of the new mobile
radios soon to be ordered by the County for installation in
Hopkin's vehicles shall also be at the County's expense.
During the installation of frequencies, we anticipate that Hopkins
will probably dispatch their vehicles on Hennepin County Channel 3, which
you now have available in your dispatch console. The installation period
involving Hopkins will probably take approximately seven to ten days to
be completed. Hopefully, the only disruption of service that should occur
during that time period would be as a result of a major occurrence involving
multi jurisdictional agencies.
Because of the delay involved in the mobile bid award, it now appears
that the best time to accomplish this exchange would be at about the time
the police agencies in Hennepin County would be receiving their 1984 police
vehicles. This should occur probably in March of 1984. This would also mean
that you should incur no further expenses for installation in new vehicles
during 1984.
It is expected at this time that the frequency work needed to accomplish
this, that involves changing over base stations, mobiles, and portables owned
by the City of Hopkins will probably be changed over by the radio service
company with whom you are contracting. We will simply have that company bill
those costs to us. We will coordinate the exchange with that company prior
to the actual exchange.
Mr. William Craig
OLL:peh
cc: Jack Shomenta
Dr. John DuBois
Sheriff Omodt
Inspector Postle
Captain Vodegel
-3- October 11, 1983
Please respond back to me at your earliest convenience. If you have
any questions regarding the exchange, please call me at 348 -6998.
Sincerely,
DON OMODT, SHERIFF
„%e
By: Ovide L. LaBergE
Chief Deputy
Hennepin County Sheriff's Department